Analog Devices EVAL-SSM3515Z User manual

Looking for a discount?
Check out our current promotions!
This coversheet was created by Verical, a division of Arrow Electronics, Inc. (“Verical”). The attached document was created by the part supplier,
not Verical, and is provided strictly 'as is.' Verical, its subsidiaries, affiliates, employees, and agents make no representations or warranties
regarding the attached document and disclaim any liability for the consequences of relying on the information therein. All referenced brands,
product names, service names, and trademarks are the property of their respective owners.
00000005981LF-000
EOS Power
Buy Now
We have 45,000 LP502030-PCM-NTC-LD-A02554 - EEMB - Lithium Battery Rectangular 3.7V 250mAh Rechargeable in
stock now. Starting at $0.034. This EEMB part is fully warrantied and traceable.
1-855-837-4225
Give us a call
International: 1-555-555-5555 1-415-281-3866
1-415-281-3866
Arrow Electronics,
Verical Division
P.O. Box 740970
Los Angeles, CA 90074-0970
Arrow Electronics, Inc
9201 East Dry Creek Road
Centennial, CO 80112
EVAL-SSM3515Z
ANALOG DEVICES
Buy Now

EVAL-SSM3515Z User Guide
UG-580
One Technology Way •P. O. Box 9106 •Norwood, MA 02062-9106, U.S.A. •Tel: [phone] •Fax: [phone] •www.analog.com
Evaluating the SSM3515 25 W, Filterless, Class-D, Digital Input Audio Amplifier
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.Rev. A | Page 1 of 19
FEATURES
Filterless digital input, mono Class-D amplifier
Operates from a single 4.5 V to 17 V supply
25 W output power, 16 V supply and 4 Ω load at 1% THD + N
107 dB A-weighted signal-to-noise ratio
93.3% efficiency into 8 Ω load at 12 V
I2C control with up to 4 pin-selectable slots/addresses
Digital interface supports sample rates from 8 kHz to 192 kHz
Flexible digital and analog gain adjustment
Flexible supply monitoring AGC function
Short-circuit and thermal protection, thermal warning
EVALUATION KIT CONTENTS
EVAL-SSM3515Z evaluation board
EVAL-ADUSB2EBZ USB interface board (USBi)
User GUI with SigmaStudio software (download from
product page)
DOCUMENTS NEEDED
SSM3515 data sheet
EVAL-SSM3515Z user guide
GENERAL DESCRIPTION
The E VA L-SSM3515Z is an evaluation board for quick evaluation
of the SSM3515. The board uses a single supply from 4.5 V to
17 V. The board includes 3.3 V and 1.8 V regulators. The on-board
digital SPDIF optical input generates the serial digital signal to
the SSM3515. The board provides register control using USBi
with SigmaStudio™-based GUI or the Total Phase Aardvark™
I2C/SPI Host Adapter. The application circuit requires a minimum
of external components and can operate from a single 4.5 V to
17 V supply. It is capable of delivering 8 W of continuous output
power into an 8 Ω load, and 15 W into an 4 Ω load from a 12 V
power supply. The board can deliver 25 W into a 4 Ω load from
a 16 V power supply, all with <1% total harmonic distortion +
noise (THD + N); however, output powers above 20 W are not
continuous due to the thermal limit.
This user guide describes how to configure and use the E VA L -
SSM3515Z evaluation board. When using the evaluation board,
consult this user guide in conjunction with the SSM3515 data
sheet, which provides specifications, internal block diagrams,
and application guidance for the amplifier IC.
The E VA L -SSM3515Z evaluation board includes a complete
circuit for driving a loudspeaker. Figure 1 shows the top view of
the evaluation board, and Figure 2 shows the bottom view of the
evaluation board.
EVALUATION BOARD TOP VIEW AND BOTTOM VIEW
11691-001
Figure 1. EVAL-SSM3515Z Evaluation Board Top View
11691-002
Figure 2. EVAL-SSM3515Z Evaluation Board Bottom View

UG-580 EVAL-SSM3515Z User Guide
Rev. A | Page 2 of 19
TABLE OF CONTENTS
Features .............................................................................................. 1
Evaluation Kit Contents................................................................... 1
Documents Needed.......................................................................... 1
General Description ......................................................................... 1
Evaluation Board Top View and Bottom View................................. 1
Revision History ............................................................................... 2
Evaluation Board Hardware Overview.......................................... 3
Setting Up the Hardware ................................................................. 4
Power Supply Configuration....................................................... 4
Regulator Enable........................................................................... 4
Digital Audio Input ...................................................................... 4
Input Configuration ..................................................................... 4
I2C Control Port.............................................................................4
Output Configuration...................................................................5
Edge Mode......................................................................................5
Component Selection ...................................................................5
Getting Started...................................................................................6
USBi and SigmaStudio Install......................................................6
Evaluation Board Startup .............................................................6
I2C Writes for Board Startup..................................................... 10
Evaluation Board Schematics and Artwork................................ 11
Ordering Information.................................................................... 18
Bill of Materials........................................................................... 18
REVISION HISTORY
9/15—Rev. 0 to Rev. A
Change to Figure 1 ........................................................................... 1
Change to Figure 12 ....................................................................... 13
Change to Figure 13 ....................................................................... 14
Change to Figure 19 ....................................................................... 17
6/15—Revision 0: Initial Version

EVAL-SSM3515Z User Guide UG-580
Rev. A | Page 3 of 19
EVALUATION BOARD HARDWARE OVERVIEW
The evaluation board includes all the hardware required for
quick evaluation of the SSM3515. The board needs an external,
high current, low noise power supply with 4.5 V to 17 V and
5 A current capability. The board needs either an optical SPDIF
or serial I2S/TDM-compatible audio source. The board provides
the 10-pin header for connecting an external I2C control device,
such as the USBi (included with the kit) or Aardvark I2C/SPI
controller via USB to control the internal registers. The
loudspeaker with 4 Ω to 8 Ω impedance can be connected
directly for listening.

UG-580 EVAL-SSM3515Z User Guide
Rev. A | Page 4 of 19
SETTING UP THE HARDWARE
POWER SUPPLY CONFIGURATION
The PVDD and GND binding posts are used to power the
board. Take care to connect the dc power with correct polarity
and voltage. Reverse polarity or overvoltage can damage the
board permanently. The supply voltages range is from 4.5 V to
17 V; higher voltages can damage the amplifier. Alternately, the
P3 2-pin, 0.1 inch header can be used to connect the external
supply. When inserted, JP2 turns on the power-on LED.
U1 is a 3.3 V regulator included to power up the on-board SPDIF
receiver. JP1 provides the input to the 3.3 V regulator. If the on-
board SPDIF receiver is used, JP1 must be inserted.
The U2 regulator is included as an option to provide the 1.8 V
(DVDD) power to the SSM3515 and other on-board supporting
circuits. Alternately, the external 1.8 V source can be connected
via the IOVDD binding post. Use P1 to select the external vs.
internal 1.8 V source.
REGULATOR ENABLE
In addition to the 4.5 V to 17 V power supply, a voltage must
be present to activate the integrated voltage regulators on the
SSM3515. The SSM3515 amplifier has an internal regulator
to provide a clean internal 5 V (AVDD) rail, as well as an
internally generated 1.8 V (DVDD) rail.
When the REGEN pin is pulled high, by connecting the top two
pins of J9 (REG_EN to PVDD), the internal DVDD regulator is
enabled. If the REGEN pin is pulled low, the regulators are disabled
and the 1.8 V DVDD must be present for the SSM3515 to function.
DIGITAL AUDIO INPUT
M1 and J1 on the evaluation board provide the SPDIF optical or
coaxial input connectors. The S1 switch selects the desired
source. The U3 IC receives the SPDIF signal and generates the
serial digital output suitable for the SSM3515. The default
format is set as I2S, 2-channel with 32 bits/channel. The serial
outputs are level shifted to 1.8 V using U6, U7, and U8 before
feeding to the SSM3515. Alternatively, a suitable I2S/TDM-
compatible source such as a DSP serial port or Audio Precision
digital serial port can be connected at P2. The P12 header
selects either the SPDIF or external source.
INPUT CONFIGURATION
There are several ways to source audio to the SSM3515 on the
evaluation board. The evaluation board can accept direct
I2S/TDM data or it can convert from 2-channel SPDIF/optical
digital audio data to I2S using an on-board digital audio receiver
(CS8416-CZZ).
To make a connection from either the on-board audio receiver
circuitry or the P2 external digital audio header to the SSM3515
device pins, jumpers must be inserted across all three rows of
H2. In some use cases, such as high speed clocking of data,
remove the jumpers across H2 to reduce stub length and
minimize parasitics. In this case, source digital audio data on
the H1 header block.
When using an I2S or TDM source, such as from Audio Precision,
it is recommended to source the input audio signals directly to
the FSYNC, BCLK, and SDATAI pins of the P2 header block.
When connecting multiple SSM3515 evaluation boards on the
same digital audio bus in a daisy-chain configuration, note that
the P5 header port has the same direct connections to the
SSM3515 pins.
To route the externally sourced I2S or TDM data to the SSM3515
pins, insert jumpers across SDATAI_EXT, FSYNC_EXT, and
BCLK_EXT on the P12 header block.
If the user does not have a direct I2S or TDM source, the on-
board digital audio receiver can accept SPDIF data from a
digital audio source, such as the digital audio output of a
compact disk player. In this case, select either optical or SPDIF
on the S1 switch to properly connect the desired input to the
digital audio receiver.
To route the on-board converted SPDIF-to-I2S data to the
SSM3515 pins, insert jumpers across SDATAI_INT, FSYNC_INT,
and BCLK_INT on the P12 header block. Note that the audio
performance is limited to that of the on-board digital audio
receiver (CS8416-CZZ).
I2C CONTROL PORT
The SSM3515 supports I2C control with the state of the ADDR pin
(J11 and J4) determining the I2C device address. Inserting a
jumper across J4 shorts across a 47 kΩ resistor. Removing the
jumper across J4 inserts the resistor in the signal path for pull-
up or pull-down operation. A jumper inserted across the top
two pins of J11 pulls the ADDR pin to a high state (IOVDD),
whereas inserting a jumper across the bottom two pins of J11
pulls the ADDR pin to a low state (GND). To set the ADDR pin
to open condition, insert a jumper across J4 and do not insert
jumpers on J11.
Table 1. ADDR Pin Configuration
I2C
Address
TDM
Slot
J11
(ADDR) J4 Configuration
0x14 1 GND Open ADDR pin connected
through 47 kΩ to GND
0x15 2 Open Short ADDR pin unconnected
0x16 3 IOVDD Open ADDR pin connected
through 47 kΩ to IOVDD
0x17 4 IOVDD IOVDD ADDR pin directly
connected to IOVDD
N/A1N/A1GND Short Not an option
1N/A means not applicable.
The SK1 10-pin header connects the USBi (provided with the kit)
for I2C control of the device.

EVAL-SSM3515Z User Guide UG-580
Rev. A | Page 5 of 19
OUTPUT CONFIGURATION
The OUT− and OUT+ output terminals connectors provide
convenient attachment points for speakers or other load devices
with standard banana connectors. In addition, 2-pin, 0.100 inch
headers are provided. J7 is inserted before the EMI filtering
portion, and J8 is inserted after the EMI filtering portion.
Because the SSM3515 does not typically require any external
audio band LC output filtering due to a low noise modulation
scheme, a low cost, high performance common-mode, choke-
based filter can optionally be inserted on the evaluation board
for EMI suppression.
For optimal performance measurement, remove this filtering by
inserting 0 Ω links or a thick wire short across B1 and B2. In
this case, leave the C39 to C41 filter capacitors unpopulated.
To safeguard against system radiated emission failure, especially
if the speaker cable length exceeds 20 cm, it may be necessary
to include an output filter. The recommended filter uses a
common-mode choke, L5 in the output path, plus capacitors,
C39 to C41, to couple the output terminals to ground. A
schematic of this configuration is shown in Figure 10, with
recommended values for the filter components given. The
recommended common-mode chokes are listed in Table 2.
Alternatively, a carefully selected pair of ferrite beads can be
used in place of the common-mode choke to save space. Take
care with the component selection to avoid degradation of
THD + N or signal-to-noise ratio (SNR) as a result of the
nonlinear performance of the ferrite beads. A summary of
the recommended ferrite beads is shown in Table 3.
For the best THD and SNR performance as specified in the
SSM3515 data sheet, remove the output filters and insert a short
across L1 and L2.
EDGE MODE
To reduce the radiated emissions from the SSM3515 amplifier,
an edge rate control mode is available. To enable the reduced
EMI mode, send an I2C control register write to activate Bit D4
of Register 0x01. The efficiency is slightly reduced when low
EMI mode is enabled. To return to the ordinary (fast edge)
operating mode, write a 0 to Bit D4 of Register 0x01.
COMPONENT SELECTION
Selecting the proper components is the key to achieving the
performance required at the cost budgeted.
Common-Mode Choke Coil—L5
The L5 common-mode choke coil is a necessary component for
filtering out the EMI caused at the switching output nodes
when the length of the speaker wire is greater than 20 cm.
Recommended components are shown in Table 2.
Output Shunt Capacitors
There are three output shunt capacitors, C39 to C41, that work
with the L1 common-mode chokes coil. Use small size (0603 or
0402), multilayer ceramic capacitors made of X7R or C0G (NP0)
materials. The recommended value is 220 pF.
Output Ferrite Beads
If ferrite beads are preferred for EMI filtering at the output
nodes, choose only the selected ferrite beads in Table 3 to
avoid excessive noise induced by the nonlinear behavior of
ferrite beads.
Table 2. Recommended Common-Mode Chokes
Part No.1Manufacturer Z (Ω at 100 MHz) IMAX (mA) DCR (Ω) Size (mm)
DLW5BTN251SQ2 Murata Manufacturing Co. 250 5000 0.014 5.0 × 5.0 × 2.35
DLW5BTN101SQ2 Murata Manufacturing Co. 100 6000 0.009 5.0 × 5.0 × 2.35
1Contact Murata Manufacturing Co. for further options.
Table 3. Recommended Output Ferrite Beads
Part No.
Manufacturer
Z (Ω at 100 MHz)
I
MAX
(mA)
DCR (Ω)
Size (mm)
NFZ2MSM101SN10
Murata Manufacturing Co.
100
4000
0.014
2.0 × 1.6 × 0.9
NFZ2MSM181SN10
Murata Manufacturing Co.
180
3400
0.020
2.0 × 1.6 × 0.9
NFZ2MSM301SN10 Murata Manufacturing Co. 300 3100 0.024 2.0 × 1.6 × 0.9

UG-580 EVAL-SSM3515Z User Guide
Rev. A | Page 6 of 19
GETTING STARTED
USBi AND SigmaStudio INSTALL
To use USBi and SigmaStudio-based GUI, follow these steps:
1. Download the SigmaStudio software suitable for your PC
from the SigmaStudio page at www.analog.com/SigmaStudio.
2. Open the downloaded .zip file.
3. For 64-bit operating systems, double click SigmaStudio-
Rel3.11-x64.exe. For 32-bit operating systems, double-
click SigmaStudio-Rel3.11-x86.exe.
4. Follow the installation steps as prompted and install the
USBi driver as the final step.
5. The SStudio.exe file is installed by default to the folder
Program Files\Analog Devices\SigmaStudio3.11.
6. Double click SStudio.exe. If the window shown in Figure 3
appears, the SigmaStudio software has been installed.
Proceed to evaluation board startup.
EVALUATION BOARD STARTUP
To start up the evaluation board using single supply, follow
these steps:
1. Ensure that the output filter is installed or 0 Ω links are in
place to connect the output terminals to the IC.
2. Place a jumper between the upper two pins of J9 (REG_EN
to PVDD) to enable the on-chip 1.8 V regulator.
a. In the bottom right corner, place a jumper across the
bottom pins of J11, and open J4 (ADDR pull-down to
GND) to select the device I2C address of 0x28, or 0x14
if using the Aardvark adapter.
3. Select the digital audio source for the SDATAI, FSYNC,
and BCLK pins of the SSM3515. If using the SPDIF source,
select the _INT signal paths on P12. If sourcing via the
Audio Precision I2S/TDM output, select the _EXT signal
paths on P12 and connect digital audio signals via the
Audio Precision connection to P2. Note that P5 allows
multiple evaluation boards to be daisy-chained to the same
signal bus.
4. Insert jumpers across all three rows of H2 to establish
direct connection of the digital audio signal lines to the
inputs of the SSM3515. For special use cases, to minimize
stub length, remove the jumpers across H2 and source
digital audio signals directly to the ports of H1.
5. If using the on-board SPDIF-to-I2S converter instead of
the external digital audio port for Audio Precision, insert
jumpers across JP1 and the bottom two terminals of P1
(IOVDD to 1V8) to power the level translators for digital
audio signals.
6. Connect a USBi or Total Phase Aardvark USB-to-I2C adapter
to SK1.
7. Connect a suitable 4 Ω to 8 Ω speaker to the left and right
banana jacks.
8. Connect a power supply to the PVDD and GND binding
posts. Turn on the power supply.
9. If using the Total Phase Aardvark USB-to-I2C adapter, use
Device Address 0x14 and write the appropriate I2C
commands to activate the SSM3515. Setting SPWDN
(Bit D0 of Register 0x00) to 0 activates the device.
10. If using SigmaStudio, ensure that the USBi is connected to
the USB port on the PC and that the 10-pin header is
connected at SK1.
11691-103
Figure 3. SigmaStudio GUI Start Window

EVAL-SSM3515Z User Guide UG-580
Rev. A | Page 7 of 19
11. In the SigmaStudio window, under the File menu, click
New Project (see Figure 3).
12. From the Tree Toolbox, under Processors (ICs/DSPs),
drag the SSM3515 block to the schematic page; and from
under Communication Channel, drag the USBi block
onto the schematic page. Using the mouse, connect the two
as shown in Figure 5.
13. If the I2C communication failure message appears, as
shown in Figure 4, the board is not set up correctly.
a. If the yellow light on USBi flickers, disconnect and try
reconnecting the USB connector from the USBi board.
b. Check if the SCL/SDA signal lines at J2-2 and J3-2 are
pulled to high.
c. Check the 1.8 V IOVDD on P1-2.
If the error persists, further debug for I2C is required before
proceeding further.
11691-105
Figure 4. I2C Communication Failure Message
11691-104
PROCESSERS
(ICs/DSPs)
COMMUNICATION
CHANNEL
IC1 TAB
Figure 5. New Project Setup

UG-580 EVAL-SSM3515Z User Guide
Rev. A | Page 8 of 19
14. Click the IC 1 tab to bring up the register control screen
for the SSM3515 (see Figure 5).
15. Under Master Software Powerdown, select Normal
Operation (see Figure 6).
16. If using the on-board SPDIF-to-I2S circuitry, press the S2
button to reset the SPDIF receiver. After reset, the BCLK,
FSYNC, and SDATAI signals are available at Header H2.
17. If using the Audio Precision PSIA, the digital serial signals
must be made available at Header P2.
18. Click the Chip/DAC Control tab in the GUI (see Figure 6).
This tab provides the power-up, mute, volume control, and
gain settings.
19. Next, select the desired analog gain under Amp Analog
Gain Selection.
11691-106
Figure 6. Chip/DAC Control Tab

EVAL-SSM3515Z User Guide UG-580
Rev. A | Page 9 of 19
20. In the SAI/Limiter Control tab, under SAI Control 1,
select Stereo Mode (see Figure 7). If clock and data signals
are present, the SSM3515 switching outputs are available at
Connector J8 and audio can be heard from the connected
speaker.
21. Click the Chip/DAC Control tab in the GUI (see Figure 6).
Under Master Software Powerdown, select Normal
Operation to power up the chip.
22. The Fault/Status tab provides the settings for faults and
status (see Figure 8). Click Read Status. If no faults exist,
all indicators are green.
11691-107
Figure 7. Serial Audio Interface and Limiter Control Tab
11691-108
Figure 8. Fault/Status Tab

UG-580 EVAL-SSM3515Z User Guide
Rev. A | Page 10 of 19
I2C WRITES FOR BOARD STARTUP
To star t up the board, only Register 0x00 needs to be written.
Set the SPWDN bit to 0 (that is, set Register 0x00 to 0x80).
If the BCLK, FSYNC, and SDATA are present with required
supply voltages, writing to this register wakes up the board
from power-down. For I2C details, see the SSM3515 data sheet.
Typical I2C writes are 3 bytes, with the first byte containing the
device address, followed by the register address, followed by
register data. Figure 9 shows a typical I2C single-word write
sequence. The default 7-bit device address set on the board is
0x14. If set differently from the default value, use that address
for the IC address bits. Set the subaddress as 0x00 and Data Byte 1
as 0x80. Following the I2C write, the device pulls the SDA line
low during the acknowledge bit period.
START
BIT STOP
BIT
R/W = 0ACKBY
SLAVE
ACKBY
SLAVE
ICADDRESS
(7 BITS) SUBADDRESS (8 BITS) DATA BYTE 1 (8BITS)
11691-109
Figure 9. Single-Word I2C Write Format

EVAL-SSM3515Z User Guide UG-580
Rev. A | Page 11 of 19
EVALUATION BOARD SCHEMATICS AND ARTWORK
11691-003
LDO EXTERNAL POWER
POWER SUPPLY
IOVDD HEADER
3
2
1P1
1
IODVDD
2 1
P4
1
GND
2 1
P3
TP7TP6TP5TP4
N
PC6C5
TP3TP2
N
PC11C10
3 5
1
2
4
U1
R36
C4
C3
35
1
2
4
U2
C9
C8
N
PC7
1
PVDD
C1
2 1
JP1
21
JP2
A
C
D1
R1
2
1
P23
IOVDD_EXT
IOVDD
1V8_REG
GBC03SAAN
0.01UF
111-2223-001 111-2223-001 111-2223-001
LT1761ES5-1.8#PBF
10UF
3V3_REG
LT1761ES5-3.3#PBF
69157-102HLF
EXT_LDO
PVDD
EXT_LDO LDO_POWER
1K
SML-DSP1210SIC-TR (RED)
69157-102HLF
470UF
10UF 1UF 0.01UF
1UF
2.2
1UF 10UF
1UF
GND
GND
OUT
BYP
SHDN_N
GND
IN
GND
GND
OUT
BYP
SHDN_N
GND
IN
GND
Figure 10. Evaluation Board Power Supply Section

UG-580 EVAL-SSM3515Z User Guide
Rev. A | Page 12 of 19
11691-004
REPLACE WITH
O-OHM
SPDIF_IN
REPLACE WITH
O-OHM
R46
C32
DNI
0.1UF
DNI 10K
CS8416_VL
MCLK_SPDIF
LRCLK_SPDIF
BCLK_SPDIF
SDATA_SPDIF
CS8416_VL
33
0.1UF
750
PLR135/T9
10K
600OHM
10UF 0.1UF
33
47K
33
47K
33
0.1UF
3.01K 0.022UF
47K
600OHM 600OHM 600OHM
DNIDNI
47K
47K
GBC03SAAN
C21
R22
P7
1 2
U5
2 4
1 3
C18
J1 1
234 R21
M1
2 3
1
R20
L1
1 2
R3
S1 2
1 3C16
4
R2
C12
P
NC13
U3
15 19 8 28 27 24
5 2 1
26 20
623 21
C14
R15 R13
TP11
1
R12
R16
TP1
1
R11
C15
R8 C20
R9
C19
R14
L2
1 2
L3
1 2
L4
1 2
P6
1 2 3
47K
0.1UF
4 314
R18
17 16
CS8416_VL
R10
9
R5
12.288MEGHZ
33
R6
18
1
C17
2
EG1218
22 CS8416-CZZ
3V3_REG
47K
8416_OMCK
R17
10000PF CS8416_VL
47K 47K R4 47K 47K
47K
1000PF
R7
47K R19
3V3_REG
7
R23
DNI
10000PF
CTP-021-A-S-Y
IOVDD
4.75K
1UF
CS8416_RST
FSM6JSMA
10
CS8416_RST
11 12 13 25
8416_OMCK
S2 3
GND
GND
GND
GND
GND
GND
OLRCK
OSCLK
SDOUT
OMCK
RMCK
VD
DGND
VL
TX
C U
RCBL
96KHZ
AUDIO_N
NV_RERR
TXSEL0 TXSEL1 RXSEL0 RXSEL1 RST_N
FILT
AGND
VA
RXN RXP0 RXP1 RXP2 RXP3
GND
GND
N4 N3N1
N2
GND
VOUT
GND
VCC
Figure 11. Evaluation Board Digital Input Converter Section

EVAL-SSM3515Z User Guide UG-580
Rev. A | Page 13 of 19
EXTERNAL DATA INPUT HEADER
I2S LRC/TDM BCLK/PDMCLK
DIGITAL DATA FROM SPDIF
I2S LRC/TDM BCLK/PDMCLK
I2S BCLK/TDM FSYNC
EXTERNAL DATA INPUT HEADER
EXTERNAL SERIAL DATA INPUT
EXTERNAL SDATAO CONNECTION
I2S BCLK/TDM FSYNC
INPUT
SSM3515 DIGITAL DATA INPUT SELECTOR
SSM3515 TDM STUB ISOLATOR
PLACE VERY CLOSE TO SSM3515
65 4
32
1
H2
R32
R30
R31
C25
C24
C27
4
1 5
3
2
U6
C26
4
1 5
3
2
U7
C29
C28
4
1 5
3
2
U8
R26
R25
R24
12
11
10
9
8
7
6
5
4
3
2
1
P12
10
9
8
7
6
5
4
3
2
1
P5
R38
R39
R33
R37
C30
C22
R28
10
9
8
7
6
5
4
3
2
1
P2
TSW-103-08-G-D
BCLK
FSYNC
SDATAI SDATAI_OUT
FSYNC_OUT
BCLK_OUT
TSW-106-08-G-D
BCLK_OUT
SDATAI_OUT
LRCLK_BD2
3MN2510-6002RB
BCLK_SPDIF
LRCLK_SPDIF
SDATA_SPDIF
MCLK_EXT
LRCLK_EXT
BCLK_EXT
SDATA_EXT
BCLK_BD2
SDATAI_BD2
1V8_REG 3V3_REG 3V3_REG
1V8_REG
3V3_REG 1V8_REG
FSYNC_OUT
FXLP34P5X
0.1UF 0.1UF
33
FXLP34P5X
0.1UF
FXLP34P5X
0.1UF
0.1UF
33
33
0.1UF
3MN2510-6002RB
DNI
50 68PF
DNI
0
0
0
0
0
68PF
DNI
0
50
DNI
GND
GND
GND
GND
GND
VCC
Y
GND
A
VCC1
GND
VCC
Y
GND
A
VCC1
GND
GND
GND
GND
GND
VCC
Y
GND
A
VCC1
GND
GND
11691-005
Figure 12. Evaluation Board Digital Input Routing/Level Shifting Section

UG-580 EVAL-SSM3515Z User Guide
Rev. A | Page 14 of 19
11691-006
USBI/AARDVARK
PLACE CLOSE TO SSM3515
ACTIVE PROBE TEST POINTS
HOLE SIZE MUST BE 40 MILS
DISTANCE 0.2" OR 0.3" APART
0-OHM SHORT
TDM HEADER
AARDVARK/BEAGLE I2C CONNECTOR
0-OHM SHORT
C31
53.6
IOVDD
R45
33PF
1 2 3
J11
5 6 R43 53.6
R44 47K
J4
43 21 H1
3
2
1
J2
2
1
H9
1
OUT+
2 1
J8
C41
1
OUT–
C39
4
32
1
L5
21 B1
C40
21 B2
2 1
J7
10
9 8 7 6 5 4 3 2 1SK1
C36
C37 C38
C35
C34
C42
3 2 1J3
R35
R34
R40
C33
3 2
1
J9
2 1
TP10
TP_BCLK
TP9
TP_FSYNC
TP8
TP_SDATAI
R42
R29
R27
C23
R41
C2
2.2K
IOVDD
GBC03SAAN
GBC03SAAN
TSW-103-08-G-D
BCLK
0
GBC03SAAN
REGEN
PVDD
FSYNC
IOVDD
GBC03SAAN
250OHMS
0.22UF
ADDR
BSTP OUT_N OUT_P
FSYNC
BCLK
SCK
SDATAI
BSTN
SDATAI
5V0DD_USB 5V0DD_USB
SDA
SDA
SCK
OUT+ OUT-
PVDD IOVDD
VREG
33PF
53.6
00
10UF
100K
2.2K
0.1UF
2.2UF
0.1UF
0.22UF
1UF
3MN2510-6002RB
180OHM
1000PF
180OHM
1000PF
1000PF
33PF
GND
GND
SSM3515 BSTN
SDATAI
SCK
IOVDD
VREG
PVDD
SDA
BCLK FSYNC
OUTP
AVSS
VSS
OUTN
REG_EN ADDR
BSTP
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
Figure 13. Evaluation Board Amplifier Configuration Section

EVAL-SSM3515Z User Guide UG-580
Rev. A | Page 15 of 19
11691-007
E3
A3
A1
D1
E1
B1
C1
C2
C4
C3
D4
D3
B4
B3
D2
E4
A4
E2
A2
B2
U10
PVDD
SSM3515
BSTP
VSS
BCLK
SDATAI
OUTP
OUTP
FSYNC
IOVDD
PVDD
REG_EN
SCK
OUTN
OUTN
ADDR
SDA
BSTN
VSS
AVSS
VREG
BSTP
BCLK
SDATA
OUTPFSYNC
VREG18
PVDD
REG_EN
SCL
OUTN
ADDR
SDA
BSTN VSSAVSS
VREG50
IO
IN
IO
IO
IO
IO
IO
IO
OUT
OUT
OUT
OUT
OUT
OUT
IN
IN
IN
IN
IN
IN
Figure 14. Evaluation Board Device Pinout

UG-580 EVAL-SSM3515Z User Guide
Rev. A | Page 16 of 19
11691-008
Figure 15. Evaluation Board Top Layer Copper
11691-009
Figure 16. Evaluation Board Second Layer Copper
11691-010
Figure 17. Evaluation Board Third Layer Copper
11691-011
Figure 18. Evaluation Board Bottom Layer Copper

EVAL-SSM3515Z User Guide UG-580
Rev. A | Page 17 of 19
11691-012
Figure 19. Evaluation Board Top Silkscreen
11691-013
Figure 20. Evaluation Board Bottom Silkscreen

UG-580 EVAL-SSM3515Z User Guide
Rev. A | Page 18 of 19
ORDERING INFORMATION
BILL OF MATERIALS
Table 4.
Qty Reference Designator Description Supplier Part No.
1 C1 Capacitor, electrolytic, 470 µF, 35 V Nichicon UKA1V471MPD1TD
5 C3, C5, C8, C10, C36 Capacitor, ceramic, X5R, 0603, 1 µF, 16 V Murata GRM188R61C105KA93D
3 C6, C7, C11 Capacitor, tantalum, 10 µF, 10 V AVX TAJA106K010RNJ
1 C12 Capacitor, electrolytic, 10 µF, 16 V United Chemi-Con MV16VC10RMD55TP
11 C13 to C15, C18, C21,
C24 to C29
Capacitor, ceramic, X7R, 0805, 0.1 µF, 50 V Murata GRM21BR71H104KA01L
2 C16, C17 Capacitor, ceramic, X7R, 0805, 1000 pF, 250 V AVX 0805PC103KAT1A
1 C19 Capacitor, ceramic, X7R, 0805, 0.022 µF, 50 V Murata GRM216R71H223KA01D
3 C2, C23, C31 Capacitor, ceramic, NPO, 0603, 33 pF, 50 V Phycomp (Yageo) CC0603JRNPO9BN330
1 C20 Capacitor, ceramic, COG, 0805, 1000 pF, 50 V Murata GRM2165C1H102JA01D
1 C33 Capacitor, ceramic, 0805, 10 µF, 16 V Murata GRM21BR61C106KE15L
1 C34 Capacitor, ceramic, X7R, 0603, 2.2 µF, 10 V Murata GRM188R71A225KE15D
2 C35, C42 Capacitor, ceramic, X8R, 0603, 0.1 µF, 25 V TDK C1608X8R1E104K
2 C37, C38 Capacitor, ceramic, X7R, 0603, 0.22 µF, 50 V Murata GCM188R71H224KA64D
2 C4, C9 Capacitor, ceramic, X7R, 0603, 0.01 µF, 50 V Phycomp (Yageo) 2238 586 15636
1 D1 LED, wtr clr, 1210, SMD (red) Lumex SML-DSP1210SIC-TR
5 GND, OUT+, OUT−,
PVDD, IODVDD
Connector, PCB, banana jack uninsulated STD (Version 2
footprint)
Johnson 108-0740-001
2 H1, H2 Connector, PCB, berg header double STR male 6P SAMTEC TSW-103-08-G-D
7 H9, J4, J7, J8, P3, P4, P23 Connector, PCB, header, assy, breakaway st Tyco Electronics 9-146285-0-02
1 J1 Connector, PCB, jack mt, right angle, yellow Connect-Tech CTP-021-A-S-Y
6 J2, J3, J9, P1, P6, J11 Connector, PCB, wire to board, header Molex 22-03-2031
3 P7, JP1, JP2 Connector, PCB, berg jumper st male 2P, 1X M000385 FCI 69157-102HLF
1 M1 MOD photolink fiber optic receiver Everlight PLR135/T9
1 P12 Connector, PCB, berg header, st male 12P SAMTEC TSW-106-08-G-D
3 P2, P5, SK1 Connector, PCB, low profile straight thru hole, 2500 series 3M N2510-6002RB
1
R1
Resistor, precision thick film chip, R0603
Panasonic
ERJ-3EKF1001V
14 R2 to R6, R8 to R14,
R19, R45
Resistor, film, SMD, 0805, 47 kΩ Yageo-Phycomp 9C08052A4702FKHFT
8 R15 to R18, R23,
R30 to R32
Resistor, film, SMD, 0603, 33 Ω Multicomp MC 0.063W 0603 1% 33R.
2 R20, R22 Resistor, precision thick film chip, R0805, 10 kΩ Panasonic ERJ-6ENF1002V
1 R21 Resistor, precision thick film chip, R0805, 750 Ω Panasonic ERJ-6ENF7500V
9 R24 to R27, R29, R33,
R37, R39, R42
Resistor, film, SMD, 0603, 0 Ω Multicomp MC0603WG00000T5E-TC
2 R34, R35 Resistor, precision thick film chip, R0603, 2.2 kΩ Panasonic ERJ-3EKF2201V
1 R36 Resistor, thick film chip, R0603, 2.2 Ω Panasonic ERJ-3RQF2R2V
1 R40 Resistor, precision thick film chip, R0805, 100 kΩ Panasonic ERJ-6ENF1003V
3 R41, R43, R44 Resistor, precision thick film chip, R0603, 53.6 Ω Panasonic ERJ-3EKF53R6V
1 R7 Resistor, precision thick film chip, R0805, 3.01 kΩ Panasonic ERJ-6ENF3011V
1 S1 Switch slide SPDT E-Switch EG1218
1 S2 Switch tact 6 mm gullwing SMD Tyco Electronics FSM6JSMA
1 U1 IC, low noise, LDO micropower regulator, 3.3 V Linear Technology LT1761ES5-3.3#PBF
1 U2 IC, linear low noise, LDO micropower regulator, 1.8 V Linear Technology LT1761ES5-1.8#PBF
1 U3 IC, CMOS, 192 kHz, digital audio receiver, CS8416-C22 Cirrus Logic CS8416-CZZ
1 U5 Crystal, SMD, 12.288 MHz Abracon ABM3B-12.288MHZ-
10-1-U-T
3 U6 to U8 IC, 1-bit translator, FXLP34P5X Fairchild FXLP34P5X

EVAL-SSM3515Z User Guide UG-580
Rev. A | Page 19 of 19
Qty Reference Designator Description Supplier Part No.
NF1C22, C30 Capacitor, ceramic, NP0, R0603 Phycomp (Yageo) 2238 867 15689
NF1R28, R38 Resistor, high frequency, SMD, chip, 0603 Vishay FC0603E50R0BST1
NF1L5 Inductor, common-mode choke, DLW5BTN251SQ2L Murata DLW5BTN251SQ2L
NF1C39 to C41 Capacitor, ceramic, X7R, 0603 AVX 06032C102JAT2A
2
B1, B2
Ferrite bead, low noise
Murata
NFZ2MSM181
4 L1 to L4 Ferrite bead, 500 mA, 600 Ω Steward HZ0805E601R-00
1NF means not fitted.
I2C refers to a communications protocol originally developed by Philips Semiconductors (now NXP Semiconductors).
ESD Caution
ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection
circuitry, damage may occur on devices subjected to high energy ESD.Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.
Legal Terms and Conditions
By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions
set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you
have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc.
(“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal,
temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided
for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional
limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term
“Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including
ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may
not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to
promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any
occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board.
Modificationsto the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive.TERMINATION. ADI may terminate this Agreement at any time upon giving written notice
to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO
WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED
TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL
PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF
THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITEDTO THE
AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable
United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of
Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby
submits to the personal jurisdiction and venue of such courts.The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.
©2015 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
UG11691-0-9/15(A)