Linear Technology DC1884A Series Quick setup guide

1
dc1884af
DEMO MANUAL DC1884A
DESCRIPTION
LTM9011-14, LTM9010-14,
LTM9009-14, LTM9008-14, LTM9007-14,
LTM9006-14: 14-Bit, 125/105/80/
65/40/25Msps Octal ADC Family
DC1884 supports the LTM
®
9011 high speed, octal ADC
family.
The versions of the 1884A demo board are listed in Table 1.
Depending on the required resolution and sample rate,
the DC1884 is supplied with the appropriate ADC. The
circuitry on the analog inputs is optimized for analog input
PARAMETER CONDITION VALUE
Supply Voltage – DC1884A Depending on Sampling Rate and the A/D Converter
Provided, This Supply Must Provide Up to 700mA
Optimized for 3.5V
[3.3V to 6V Minimum/Maximum]
Analog Input Range Depending on SENSE Pin Voltage 1VP-P to 2VP-P
Logic Input Voltages Minimum Logic High 1.3V
Maximum Logic Low 0.6V
Logic Output Voltages (Differential) Nominal Logic Levels (100Ω Load, 3.5mA Mode) 350mV/1.25V Common Mode
Minimum Logic Levels (100Ω Load, 3.5mA Mode) 247mV/1.25V Common Mode
Sampling Frequency (Convert Clock Frequency) See Table 1
Encode Clock Level Single-Ended Encode Mode (ENC–Tied to GND) 0V to 3.6V
Encode Clock Level Differential Encode Mode (ENC–Not Tied to GND) 0.2V to 3.6V
Resolution See Table 1
Input Frequency Range See Table 1
SFDR See Applicable Data Sheet
SNR See Applicable Data Sheet
PERFORMANCE SUMMARY
frequencies from 1MHz to 70MHz. Refer to the data sheet
for proper input networks for different input frequencies.
Design files for this circuit board are available at
http://www.linear.com/demo
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Table 1. DC1884 Variants
DC1884 VARIANTS ADC PART NUMBER RESOLUTION MAXIMUM SAMPLE RATE INPUT FREQUENCY
1884A-A LTM9011-14 14-Bit 125Msps 1MHz to 70MHz
1884A-B LTM9010-14 14-Bit 105Msps 1MHz to 70MHz
1884A-C LTM9009-14 14-Bit 80Msps 1MHz to 70MHz
1884A-D LTM9008-14 14-Bit 65Msps 1MHz to 70MHz
1884A-E LTM9007-14 14-Bit 40Msps 1MHz to 70MHz
1884A-F LTM9006-14 14-Bit 25Msps 1MHz to 70MHz
(TA= 25°C)

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dc1884af
DEMO MANUAL DC1884A
QUICK START PROCEDURE
DC1884 is easy to set up to evaluate the performance of
the LTM9011 family of A/D converters. For proper mea-
surement equipment setup, refer to Figure 1 and follow
the procedure explained in the following sections.
Figure 1. Test Setup of DC1884
DC1884A F01
ANALOG
INPUTS
3V TO 6V
GND JUMPERS SHOWN IN
DEFAULT POSITIONS
SINGLE-ENDED ENCODE CLOCK

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dc1884af
DEMO MANUAL DC1884A
QUICK START PROCEDURE
Setup
If a DC1371 data acquisition and collection system was
supplied with the DC1884, follow the DC1371 Quick Start
Guide to install the required software and to connect the
DC1371 to the DC1884 and to a PC.
DC1884 Board Jumpers
The DC1884 board should have the following jumper set-
tings as default positions (as per Figure 1):
JP14: PAR/SER: Selects Parallel or Serial Programming
Mode. (Default: Serial)
Optional Jumpers AJ3 and J6: Term: Enables/Disable
Optional Output Termination. (Default: Removed)
JP5: ILVDS:Selects Either 1.75mA or 3.5mA of Output
Current for the LVDS Drivers. (Default: Removed)
JP1 and JP2: Lane: Selects Either1-Laneor2-LaneOutput
Modes (Default: Removed)
Note: The DC1371 does not support 1-Lane operation.
JP9: SHDN: Enables and Disables the LTM9011.
(Default: Removed)
JP8: WP: Enable/Disables Write Protect for the EEPROM.
(Default: Removed)
Note: Optional jumper should be left open to ensure proper
serial configuration.
Applying Power and Signals to the DC1884
The DC1371 is used to acquire data from the DC1884. The
DC1371 must first be connected to a powered USB port
and have 5V applied power before applying 3.5V across
the pins marked V+and “GND” on the DC1884. DC1884
requires 3.5V for proper operation.
The DC1884 demonstration circuit requires up to 700mA
depending on the sampling rate and the A/D converter
supplied.
The DC1884 should not be removed or connected to the
DC1371 while power is applied.
Analog Input Network
For optimal distortion and noise performance, the RC
network on the analog inputs may need to be optimized
for different analog input frequencies. For input frequen-
cies above 70MHz, refer to the LTM9011 data sheet for a
proper input network.
In almost all cases, filters will be required on both analog
input and encode clock to provide data sheet SNR.
The filters should be located close to the inputs to avoid
reflections from impedance discontinuities at the driven
end of a long transmission line. Most filters do not present
50Ω outside the passband. In some cases, 3dB to 10dB
pads may be required to obtain low distortion.
If your generator cannot deliver full-scale signals without
distortion,youmaybenefitfromamediumpoweramplifier
based on a gallium arsenide gain block prior to the final
filter. This is particularly true at higher frequencies where
IC based operational amplifiers may be unable to deliver
the combination of low noise figure and high IP3 point
required. A high order filter can be used prior to this final
amplifier, and a relatively lower Q filter used between the
amplifier and the demonstration circuit.

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dc1884af
DEMO MANUAL DC1884A
QUICK START PROCEDURE
Encode Clock
Note: Apply an encode clock to the SMA connector on
the DC1884 demonstration circuit board marked “J2
CLK+.” As a default, the DC1884 is populated to have a
single-ended input.
For the best noise performance, the ENCODE input must
be driven with a very low jitter, square wave source. The
amplitude should be large, up to 3VP-P or 13dBm. When
using a sinusoidal signal generator, a squaring circuit can
be used. Linear Technology also provides demo board
DC1075A that divides a high frequency sine wave by four,
producing a low jitter square wave for best results with
the LTM9011.
Usingbandpassfilters on theclockand the analog input will
improve the noise performance by reducing the wideband
noise power of the signals. In the case of the DC1884 a
bandpass filter used for the clock should be used prior
to the DC1075A. Data sheet FFT plots are taken with 10
pole LC filters made by TTE (Los Angeles, CA) to suppress
signal generator harmonics, non harmonically related
spurs and broadband noise. Low phase noise Agilent
8644B generators are used for both the clock input and
the analog input.
Digital Outputs
Data outputs, data clock, and frame clock signals are
available on J1 of the DC1884. This connector follows the
VITA-57/FMC standard, but all signals should be verified
when using an FMC carrier card other than the DC1371.
Software
The DC1371 is controlled by the PScope system software
that can bedownloaded fromthe Linear Technology website
at http://www.linear.com/software/.
To startthe data collectionsoftware, “PScope.exe,” whichis
installed by default to \Program Files\LTC\PScope\, double
click the PScope icon or bring up the run window under
the start menu, and browse to the PScope directory and
select “PScope.”
If the DC1884 isproperly connected tothe DC1371, PScope
should automatically detect the DC1884 and configure
itself accordingly.
If everything is hooked up properly and a powered and
suitable convert clock is present, clicking the “Collect”
button should result in time and frequency plots displayed
in the PScope window. Additional information and help for
PScope is available in the DC1371 Quick Start Guide, and
in the online help feature within the PScope program itself.

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dc1884af
DEMO MANUAL DC1884A
QUICK START PROCEDURE
Figure 2. PScope Toolbar
Figure 3. Demo Board Configuration Options
Serial Programming
PScope has the ability to program the DC1884 serially
through the DC1371. There are several options available
in the LTM9011 family that are only available through
serially programming. PScope allows all of these features
to be tested.
These options are available by first clicking on the “Set
Demo Bd Options” icon on the PScope toolbar (Figure 2).
This will bring up the menu shown in Figure 3.
This menu allows any of the options available for the
LTM9011 family to be programmed serially. The LTM9011
family has the following options:
Randomizer: Enables Data Output Randomizer.
• Off (Default): Disables data output randomizer.
• On: Enables data output randomizer.
Two’s Complement: Enables Two’s Complement Mode.
• Off (Default): Selects offset binary mode.
• On: Selects two’s complement mode.
Sleep Mode: Selects Between Normal Operation and
Sleep Mode.
• Off (Default): Entire ADC is powered and active.
• On: The entire ADC is powered down.
Channel 1 Nap: Selects Between Normal Operation and
Putting Channel 1 in Nap Mode.
• Off (Default): Channel 1 is active.
• On: Channel 1 is in nap mode.
Channel 2 Nap: Selects Between Normal Operation and
Putting Channel 2 in Nap Mode.
• Off (Default): Channel 2 is active.
• On: Channel 2 is in nap mode.
Channel 3 Nap: Selects Between Normal Operation and
Putting Channel 3 in Nap Mode.
• Off (Default): Channel 3 is active.
• On: Channel 3 is in nap mode.
Channel 4 Nap: Selects Between Normal Operation and
Putting Channel 4 in Nap Mode.
• Off (Default): Channel 4 is active.
• On: Channel 4 is in nap mode.

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dc1884af
DEMO MANUAL DC1884A
QUICK START PROCEDURE
Output Current: Selects the LVDS Output Drive Current.
• 1.75mA (Default): LVDS output driver current.
• 2.1mA: LVDS output driver current.
• 2.5mA: LVDS output driver current.
• 3.0mA: LVDS output driver current.
• 3.5mA: LVDS output driver current.
• 4.0mA: LVDS output driver current.
• 4.5mA: LVDS output driver current.
Internal Termination: Enables LVDS Internal Termination.
• Off (Default): Disables internal termination.
• On: Enables internal termination.
Outputs: Enables Digital Outputs.
• Enabled (Default): Enables digital outputs.
• Disabled: Disables digital outputs.
Test Pattern: Selects Digital Output Test Patterns. The
desired test pattern can be entered into the text boxes
provided.
• Off (Default): ADC input data is displayed.
• On: Test pattern is displayed.
Once the desired settings are selected, click “OK” and
PScope will automatically update the register of the device
on the DC1884 demo board.

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dc1884af
DEMO MANUAL DC1884A
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
DC1884A1
1 5 C1, C69, C81, C94, C107 CAP, X5R, 2.2μF 16V 20%, 0603 TAIYO YUDEN, EMK107BJ225MA
2 0 C2 CAP, 0402 TBD
3 0 C3, C6 CAP, X7R, 0.01μF 16V 10%, 0402 OPT
4 19 C4, C8, C9, C58, C59, C65, C66, C71,
C72, C77, C78, C84, C85, C90, C91,
C97, C98, C103, C104
CAP, X7R, 0.01μF 16V 10%, 0402 AVX, 0402YC103KAT2A
5 10 C5, C7, C60, C67,C73, C79, C86, C92,
C99, C105
CAP, NP0, 4.7pF 25V 10% 0402 AVX, 04023A4R7KAT2A
6 1 C10 CAP, X5R, 4.7μF 6.3V, 20%, 0603 TAIYO YUDEN, JMK107BJ475MA-T
7 2 C11, C12 CAP, X7R, 1μF 10V, 20%, 0603 AVX, 0603ZC105MAT1A
8 1 C13 CAP, TANT 100μF 10V, 20%, 6032 AVX, TAJW107M010R
9 3 C14, C55, C56 CAP, X5R, 0.1μF 10V, 10%, 0402 AVX, 0402ZD104KAT2A
10 16 C57, C61, C62, C64, C68, C74, C76,
C80, C83, C87, C89, C93, C96, C100,
C102, C106
CAP, COG, 8.2pF, 50V, 5%, 0402 AVX, 04025A8R2JAT2A
11 8 C63, C70, C75, C82, C88, C95, C101,
C108
CAP, X5R, 0.1μF 10V, 10%, 0603 AVX, 0603ZD104KAT2A
12 3 E1, E3, E4 TURRET, TESTPOINT 0.062 THICK BRD 0.094" MILL MAX 2501-2-00-80-00-00-07-0
13 2 FB1, FB2 FERRITE BEAD, ?AMP 1206 MURATA BLM31PG330SN1L
14 8 JP1, JP2, JP3, JP4, JP5, JP6, JP8,
JP9
HEADERS, SGL ROW 3 PINS 2mm CTRS SAMTEC TMM-103-02-L-S
15 10 J1, J2, J4, J5, J6, J7, J8, J9, J10, J11 CON, SMA STRAIGHT CONNEX, 132134
16 1 J3 BGA CONN, 10 × 40 PIN SAMTEC, SEAM-40-02.0-S-10-2-A-K-TR
17 0 L1 IND, 0603 TBD
18 8 L2, L3, L4, L5, L6, L7, L8, L9 IND, 56nH, 0603 MURATA, LQP18MN56NG02D
19 8 R1, R2, R3, R6, R7, R8, R10, R85 RES, CHIP 1k, 1/16W, 5% 0402 VISHAY CRCW04021K00JNED
20 5 R4, R11, R82, R83, R84 RES, CHIP 10k, 1/16W, 5% 0402 VISHAY CRCW040210K0JNED
21 2 R5, R13 RES, CHIP 31.6k, 1/16W, 1% 0402 VISHAY CRCW040231K6FKED
22 4 R9, R19, R20, R86 RES, CHIP 100, 1/16W, 5% 0402 VISHAY CRCW0402100RJNED
23 0 R14, R15, R16, R18, R24, R25, R26,
R27
RES, 0402 TBD
24 2 R17, R23 RES, CHIP 5.1, 1/16W, 5% 0402 VISHAY CRCW04025R10JNED
25 10 R21, R22, R104, R114, R124, R134,
R144, R154, R164, R174
RES, CHIP 49.9, 1/16W, 1% 0402 VISHAY CRCW040249R9FKED
26 1 R28 RES, CHIP 3k, 1/16W, 5% 0603 VISHAY CRCW06033K00JNEA
27 1 R29 RES, CHIP 180k, 1/16W, 1% 0603 VISHAY CRCW0603180KFKEA
28 0 R87, R88, R89, R90, R91, R92, R93,
R94
RES, CHIP, 100, 1/16W, 1% 0201 OPT
29 24 R95, R96, R97, R105 TO R107, R115
TO R117, R125, R126, R128, R135 TO
R137, R145, R146, R148, R155 TO
R157, R165, R166, R168
RES, CHIP, 86.6, 1/16W, 1%, 0402 YAGEO, RC0402FR-0786R6L
30 16 R98, R99, R108, R109, R118, R119,
R127, R129, R138, R139, R147,
R149, R158, R159, R167, R169
RES, CHIP, 33.2, 1/16W, 1% 0402 YAGEO, RC0402FR-0733R2L

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dc1884af
DEMO MANUAL DC1884A
PARTS LIST
ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
31 16 R100, R101, R110, R111, R120,
R121, R130, R132, R140, R141,
R150, R152, R160, R161, R170, R172
RES, CHIP, 10.0, 1/16W, 1% 0402 YAGEO, RC0402FR-0710RL
32 16 R102, R103, R112, R113, R122,
R123, R131, R133, R142, R143,
R151, R153, R162, R163, R171, R173
RES, CHIP, 10.0, 1/16W, 1% 0201 YAGEO, RC0201FR-0710RL
33 9 T1, T3, T5, T7, T9, T11, T13, T15, T17 XFMR, RF~SMT~1:1, TRANS-SM-22-M/A-COM M/A-COM, MABA-007159-000000
34 8 T4, T6, T8, T10, T12, T14, T16, T18 XFMR, FLUX-COUPLED, TRANS-SM-22-M/A-COM M/A-COM, MABAES0060
35 1 U2 IC, ADJUSTABLE LDO, DFN8DD LINEAR TECHNOLOGY, LT3080EDD
36 1 U3 IC, SERIAL EEPROM TSSOP-8 MICROCHIP, 24LC32A-I/ST
37 8 AS SHOWN ON ASSY DWG SHUNT, 0.079" CENTER SAMTEC, 2SN-BK-G
STENCIL (TOP AND BOTTOM) DC1884-1
DC1884A-A
1 1 DC1884A-1 GENERAL BOM
2 1 U1 IC, AD CONVERTER MODULE, BGA140, 11.25mm
× 9mm × 2.72mm
LINEAR TECHNOLOGY, LTM9011IY-14
DC1884A-B
1 1 DC1884A-1 GENERAL BOM
2 1 U1 IC, AD CONVERTER MODULE, BGA140, 11.25mm
× 9mm × 2.72mm
LINEAR TECHNOLOGY, LTM9010IY-14
DC1884A-C
1 1 DC1884A-1 GENERAL BOM
2 1 U1 IC, AD CONVERTER MODULE, BGA140, 11.25mm
× 9mm × 2.72mm
LINEAR TECHNOLOGY, LTM9009IY-14
DC1884A-D
1 1 DC1884A-1 GENERAL BOM
2 1 U1 IC, AD CONVERTER MODULE, BGA140, 11.25mm
× 9mm × 2.72mm
LINEAR TECHNOLOGY, LTM9008IY-14
DC1884A-E
1 1 DC1884A-1 GENERAL BOM
2 1 U1 IC, AD CONVERTER MODULE, BGA140, 11.25mm
× 9mm × 2.72mm
LINEAR TECHNOLOGY, LTM9007IY-14
DC1884A-F
1 1 DC1884A-1 GENERAL BOM
2 1 U1 IC, AD CONVERTER MODULE, BGA140, 11.25mm
× 9mm × 2.72mm
LINEAR TECHNOLOGY, LTM9006IY-14

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dc1884af
DEMO MANUAL DC1884A
5 5
4 4
3 3
2 2
1 1
D D C C B B A A
1. ALL RESISTORS AND CAPACITORS ARE 0402. NOTE: UNLESS OTHERWISE SPECIFIED:
ASSY
-A U1
LTM9011IY -Bit
14 Msps 14 14 14 14 14
-B -C -E -F -D
LTM9010IY LTM9009IY LTM9008IY LTM9007IY LTM9006IY
125 105
80 65 40 25
*
CLK- CLK+
AIN1+ AIN1-
AIN4+ AIN6+ AIN4- AIN6-
AIN2+ AIN2-
AIN7+AIN3+ AIN7-AIN3-
AIN8+AIN5+ AIN8-AIN5-
OUT1A+ OUT1A- OUT1B+ OUT1B- OUT2A+ OUT2A- OUT2B+ OUT2B- OUT3A+ OUT3A- OUT3B+ OUT3B- OUT4A+ OUT4A- OUT4B+ OUT4B- OUT5A+ OUT5A- OUT5B+ OUT5B- OUT6A+ OUT6A- OUT6B+ OUT6B- OUT7A+ OUT7A- OUT7B+ OUT7B- OUT8A+ OUT8A- OUT8B+ OUT8B- FRA+ FRA- FRB+ FRB- DCOA+ DCOA- DCOB+ DCOB-
AIN1+ AIN1- VCM12 AIN2+ AIN2- AIN4+ AIN4- AIN6+ AIN6- AIN7+ AIN7- AIN8- VCM78 AIN5+ AIN5- AIN3+ AIN3- VCM34 VCM56 AIN8+
SDOA CSB CSA SCK MOSI PAR/SER SDOB
+1.8V
+1.8VO
+1.8V
+1.8V
+1.8V +1.8V
+1.8V3.3_AUX
+1.8V
+1.8V
+1.8VO
+1.8V
3.3_AUX
+1.8V
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
1
DEMO CIRCUIT 1884A
03/16/2012, 04:46 PM 1 3
LOW POWER OCTAL-ADC
BLTM90XXIY
KIM T.
CLARENCE M.
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
1
DEMO CIRCUIT 1884A
03/16/2012, 04:46 PM 1 3
LOW POWER OCTAL-ADC
BLTM90XXIY
KIM T.
CLARENCE M.
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
1
DEMO CIRCUIT 1884A
03/16/2012, 04:46 PM 1 3
LOW POWER OCTAL-ADC
BLTM90XXIY
KIM T.
CLARENCE M.
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
CLARENCE M.1ST PROTOTYPE
_
1 03-16-12
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
CLARENCE M.1ST PROTOTYPE
_
1 03-16-12
REVISION HISTORY DESCRIPTION DATEAPPROVEDECO REV
CLARENCE M.1ST PROTOTYPE
_
1 03-16-12
R14 OPT R14 OPT
C8
0.01uF
C8
0.01uF
C7 4.7pF C7 4.7pF
R1 1K R1 1K
C6 0.01uF OPT C6 0.01uF OPT
JP6
EN DIS
TERM
HD1X3-079
JP6
EN DIS
TERM
HD1X3-079
1 3 2
R19 100 R19 100
R92 100 0201 R92 100 0201
R16 OPT R16 OPT R27 OPT R27 OPT
JP4
PAR SER
PAR/SER
HD1X3-079
JP4
PAR SER
PAR/SER
HD1X3-079
1 3 2
R5 31.6K 1% R5 31.6K 1%
J2
CONNEX-132134
CLK+ J2
CONNEX-132134
CLK+
C9 0.01uF C9 0.01uF
R3 1K R3 1K
L1 OPT L1 OPT
C2 OPT C2 OPT
E3
V+
3V - 6V
E3
V+
3V - 6V
JP3
EN
DIS
TERM
HD1X3-079
JP3
EN
DIS
TERM
HD1X3-079
1 3 2
R17 5.1 R17 5.1
+
C10
4.7uF 6.3V
0603
+
C10
4.7uF 6.3V
0603
R23 5.1 R23 5.1
R8 1K R8 1K
T1
MABA-007159-000000
T1
MABA-007159-000000
5 4 3
1
2
R13 31.6K 1% R13 31.6K 1%
R87 100 0201 R87 100 0201
R88 100 0201 R88 100 0201
FB1
BLM31PG330SN1L
FB1
BLM31PG330SN1L
R15 OPT R15 OPT
R18 OPT R18 OPT
C14 0.1uF C14 0.1uF
R94 100 0201 R94 100 0201
C4
0.01uF
C4
0.01uF
C5 4.7pF C5 4.7pF
U1
*
U1
*
AIN1+
B2 AIN1- B1 VCM12 B3
AIN2+
C2 AIN2- C1
AIN3+
E2 AIN3- E1 VCM34
F3
AIN4+
G2 AIN4- G1
AIN5+
H1 AIN5- H2 VCM56
J3
AIN6+
K1 AIN6- K2
AIN7+
M1 AIN7- M2
AIN8+
N1 AIN8- N2 VCM78 N3
GND
A1 GND
A2 GND
A3 GND
A4 GND
A5 GND
A6 GND
B4 GND
B5 GND
B7 GND
C3 GND
C4 GND
C6 GND
D1 GND
D2 GND
D5 GND
E5 GND
F1 GND
F2 GND
F4 GND
F5 GND
F6 GND
G3 GND
G4 GND
G5 GND
G6 GND
H3 GND
H4 GND
H5 GND
H6 GND
J1 GND
J2 GND
J4 GND
J5 GND
J6 GND
K5 GND
K6 GND
L1 GND
L2 GND
M3 GND
M4 GND
N4 GND
N5 GND
N6 GND
N7 GND
P1 GND
P2 GND
P3 GND
P4 GND
P7
OGND
A9 OGND
A10 OGND
B9 OGND
B10 OGND
H9 OGND
H10 OGND
N9 OGND
N10 OGND
P9 OGND
P10
OUT1A+ E8
OUT1A- E7
OUT2A+ A8
OUT2A- B8
OUT1B+ D8
OUT1B- C8
OUT2B+ C7
OUT2B- D7
OUT3A+ D9
OUT3A- D10
OUT3B+ E9
OUT3B- E10
OUT4A+ C10
OUT4A- C9
OUT4B+ F8
OUT4B- F7
OUT5A+ J7
OUT5A- J8
OUT5B+ K7
OUT5B- K8
OUT6A+ K10
OUT6A- K9
OUT6B+ L10
OUT6B- L9
OUT7A+ L7
OUT7A- M7
OUT7B+ N8
OUT7B- P8
OUT8A+ M8
OUT8A- L8
OUT8B+ M9
OUT8B- M10
CLK-
P6 CLK+ P5
FRA+ H8
FRA- H7
FRB+ J10
FRB- J9
DCOA+ G7
DCOA- G8
DCOB+ F9
DCOB- F10
+1.8VO
G9 +1.8VO
G10
+1.8V
L4 +1.8V L3 +1.8V
K4 +1.8V K3 +1.8V
E4 +1.8V E3 +1.8V
D4 +1.8V D3
SDOB D6
SDOA E6
CSB M5
CSA L5
SCK L6
PAR/SER A7
SENSE C5
VREF B6
SDI M6
C11 1uF
0603
C11 1uF
0603
R29 180K
1%
R29 180K
1%
C3 0.01uF OPT C3 0.01uF OPT
R9 100 R9 100
R10 1K R10 1K JP2
1 LANE 2 LANE
LANE
HD1X3-079
JP2
1 LANE 2 LANE
LANE
HD1X3-079
1 3 2
R4 10K R4 10K
R2 1K R2 1K
R93 100 0201 R93 100 0201
R26 OPT R26 OPT
JP1
1 LANE 2 LANE
LANE
HD1X3-079
JP1
1 LANE 2 LANE
LANE
HD1X3-079
1 3 2
JP5
1.7mA 3.5mA
ILVDS
HD1X3-079
JP5
1.7mA 3.5mA
ILVDS
HD1X3-079
1 3 2
R6 1K R6 1K
E1
EXT REF
E1
EXT REF
U2 LT3080EDD U2 LT3080EDD
SET 4
IN
7OUT 1
IN
8OUT 2
OUT 9
VCTRL
5
NC
6
OUT 3
C12 1uF
0603
C12 1uF
0603
R25 OPT R25 OPT
E4
GND
E4
GND
R7 1K R7 1K
FB2
BLM31PG330SN1L
FB2
BLM31PG330SN1L
R28
3K
R28
3K
R21 49.9 1% R21 49.9 1%
C56 0.1uF C56 0.1uF
+
C1 2.2uF 0603
+
C1 2.2uF 0603
R22 49.9 1% R22 49.9 1%
R24 OPT R24 OPT
R91 100 0201 R91 100 0201
+
C13 100uF 10V 6032
+
C13 100uF 10V 6032
R11 10K R11 10K
J1
CONNEX-132134
CLK- J1
CONNEX-132134
CLK-
R20 100 R20 100
R90 100 0201 R90 100 0201
R89 100 0201 R89 100 0201
SCHEMATIC DIAGRAMS

10
dc1884af
DEMO MANUAL DC1884A
5 5
4 4
3 3
2 2
1 1
D D C C B B A A
AIN1+ AIN1- VCM12 AIN2+ AIN2-
AIN7+ AIN7- VCM78 AIN8+ AIN8-
AIN3+ AIN3- VCM34 AIN4+ AIN4-
AIN5+ AIN5- VCM56 AIN6+ AIN6-
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
1
DEMO CIRCUIT 1884A
03/16/2012, 04:46 PM 2 3
LOW POWER OCTAL-ADC
BLTM90XXIY
KIM T.
CLARENCE M.
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
1
DEMO CIRCUIT 1884A
03/16/2012, 04:46 PM 2 3
LOW POWER OCTAL-ADC
BLTM90XXIY
KIM T.
CLARENCE M.
SIZE DATE:
IC NO. REV.
SHEET OF
TITLE:
APPROVALS
PCB DES.
APP ENG.
TECHNOLOGY Fax: [phone]
Milpitas, CA 95035 Phone: [phone] McCarthy Blvd. LTC Confidential-For Customer Use Only
CUSTOMER NOTICE
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SCHEMATIC
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
www.linear.com
1
DEMO CIRCUIT 1884A
03/16/2012, 04:46 PM 2 3
LOW POWER OCTAL-ADC
BLTM90XXIY
KIM T.
CLARENCE M.
R166 86.6 R166 86.6
R148
86.6
R148
86.6
C72 0.01uF C72 0.01uF
R112 10 0201 R112 10 0201
T7
MABA-007159-000000
T7
MABA-007159-000000
5 4 3
1
2
C66 0.01uF C66 0.01uF
R171 10 0201 R171 10 0201
C59 0.01uF C59 0.01uF
C80 8.2pF C80 8.2pF
R159 33.2 R159 33.2
R122 10 0201 R122 10 0201
R127 33.2 R127 33.2
R160 10 R160 10
L8 56nH L8 56nH
T12
MABAES0060
T12
MABAES0060
4 5 1
3 2
T18
MABAES0060
T18
MABAES0060
4 5 1
3 2
J11
CONNEX, 132134
AIN8 J11
CONNEX, 132134
AIN8
R103 10 0201 R103 10 0201
T13
MABA-007159-000000
T13
MABA-007159-000000
5 4 3
1
2
C84 0.01uF C84 0.01uF
R129 33.2 R129 33.2
R143 10 0201 R143 10 0201
C102 8.2pF C102 8.2pF
T4
MABAES0060
T4
MABAES0060
4 5 1
3 2
C96 8.2pF C96 8.2pF
R124 49.9 R124 49.9
R173 10 0201 R173 10 0201
C74 8.2pF C74 8.2pF
T6
MABAES0060
T6
MABAES0060
4 5 1
3 2
R130 10 R130 10
C92 4.7pF C92 4.7pF
R118 33.2 R118 33.2
C68 8.2pF C68 8.2pF
C103 0.01uF C103 0.01uF
R174 49.9 R174 49.9
C69 2.2uF 0603 C69 2.2uF 0603 R108 33.2 R108 33.2
L9 56nH L9 56nH
R99 33.2 R99 33.2
R146 86.6 R146 86.6
C106 8.2pF C106 8.2pF
R162 10 0201 R162 10 0201
J6
CONNEX, 132134
AIN3 J6
CONNEX, 132134
AIN3
C98 0.01uF C98 0.01uF
R151 10 0201 R151 10 0201
C73 4.7pF C73 4.7pF
R139 33.2 R139 33.2
T15
MABA-007159-000000
T15
MABA-007159-000000
5 4 3
1
2
L6 56nH L6 56nH
R105 86.6 R105 86.6
C81 2.2uF 0603 C81 2.2uF 0603
R167 33.2 R167 33.2
R95 86.6 R95 86.6
T14
MABAES0060
T14
MABAES0060
4 5 1
3 2
C75 0.1uF0603 C75 0.1uF0603
R125 86.6 R125 86.6 R132
10 R132 10
R115 86.6 R115 86.6 R121
10 R121 10
R140 10 R140 10
C67 4.7pF C67 4.7pF
R164 49.9 R164 49.9
J8
CONNEX, 132134
AIN5 J8
CONNEX, 132134
AIN5
C89 8.2pF C89 8.2pF
R169 33.2 R169 33.2
C83 8.2pF C83 8.2pF
C57 8.2pF C57 8.2pF
R153 10 0201 R153 10 0201
C78 0.01uF C78 0.01uF
R116 86.6 R116 86.6
C63 0.1uF0603 C63 0.1uF0603
R111 10 R111 10
C82 0.1uF0603 C82 0.1uF0603
C100 8.2pF C100 8.2pF
C90 0.01uF C90 0.01uF
R154 49.9 R154 49.9
R106 86.6 R106 86.6
R170 10 R170 10
R97
86.6
R97
86.6
R158 33.2 R158 33.2
L7 56nH L7 56nH
C93 8.2pF C93 8.2pF
C65 0.01uF C65 0.01uF
R142 10 0201 R142 10 0201
L2 56nH L2 56nH
R100 10 R100 10
C70 0.1uF0603 C70 0.1uF0603
R117
86.6
R117
86.6
C85 0.01uF C85 0.01uF
R107
86.6
R107
86.6
T11
MABA-007159-000000
T11
MABA-007159-000000
5 4 3
1
2
R98 33.2 R98 33.2
C99 4.7pF C99 4.7pF
R128
86.6
R128
86.6
R155 86.6 R155 86.6 R161
10 R161 10
R147 33.2 R147 33.2
R102 10 0201 R102 10 0201
C107 2.2uF 0603 C107 2.2uF 0603
J9
CONNEX, 132134
AIN6 J9
CONNEX, 132134
AIN6
C101 0.1uF0603 C101 0.1uF0603
R165 86.6 R165 86.6 R172
10 R172 10
R144 49.9 R144 49.9
T8
MABAES0060
T8
MABAES0060
4 5 1
3 2
C104 0.01uF C104 0.01uF
R149 33.2 R149 33.2
T9
MABA-007159-000000
T9
MABA-007159-000000
5 4 3
1
2
R96 86.6 R96 86.6
C61 8.2pF C61 8.2pF
C71 0.01uF C71 0.01uF
R123 10 0201 R123 10 0201
C87 8.2pF C87 8.2pF
R113 10 0201 R113 10 0201
R156 86.6 R156 86.6
R150 10 R150 10
C108 0.1uF0603 C108 0.1uF0603
R138 33.2 R138 33.2
C79 4.7pF C79 4.7pF
R114 49.9 R114 49.9
J7
CONNEX, 132134
AIN4 J7
CONNEX, 132134
AIN4
R157
86.6
R157
86.6
C86 4.7pF C86 4.7pF
R104 49.9 R104 49.9
R135 86.6 R135 86.6 R141
10 R141 10
C58 0.01uF C58 0.01uF
R168
86.6
R168
86.6
C94 2.2uF 0603 C94 2.2uF 0603
R131 10 0201 R131 10 0201
R119 33.2 R119 33.2
C88 0.1uF0603 C88 0.1uF0603
R145 86.6 R145 86.6 R152
10 R152 10
R126 86.6 R126 86.6
T5
MABA-007159-000000
T5
MABA-007159-000000
5 4 3
1
2
C97 0.01uF C97 0.01uF
C91 0.01uF C91 0.01uF
T10
MABAES0060
T10
MABAES0060
4 5 1
3 2
L3 56nH L3 56nH
T16
MABAES0060
T16
MABAES0060
4 5 1
3 2
C64 8.2pF C64 8.2pF
J5
CONNEX, 132134
AIN2 J5
CONNEX, 132134
AIN2
T17
MABA-007159-000000
T17
MABA-007159-000000
5 4 3
1
2
R120 10 R120 10
L4 56nH L4 56nH
J10
CONNEX, 132134
AIN7 J10
CONNEX, 132134
AIN7
C60 4.7pF C60 4.7pF
C76 8.2pF C76 8.2pF
J4
CONNEX, 132134
AIN1 J4
CONNEX, 132134
AIN1
R163 10 0201 R163 10 0201
R136 86.6 R136 86.6
C62 8.2pF C62 8.2pF
C95 0.1uF0603 C95 0.1uF0603
R133 10 0201 R133 10 0201
R109 33.2 R109 33.2
R110 10 R110 10 R101 10 R101 10
C77 0.01uF C77 0.01uF
R134 49.9 R134 49.9
C105 4.7pF C105 4.7pF
R137
86.6
R137
86.6
L5 56nH L5 56nH
T3
MABA-007159-000000
T3
MABA-007159-000000
5 4 3
1
2
SCHEMATIC DIAGRAMS