Texas Instruments ADCx120Q1EVM-PDK User manual

User’s Guide
ADCx120Q1EVM-PDK, PCMD3140Q1EVM-PDK Evaluation
Module
ABSTRACT
This user's guide describes the function and use of the ADCx120Q1EVM-PDK and PCMD3140Q1EVM-PDK.
This document includes the hardware configuration instructions, a quick-start guide, jumper and connector
descriptions, software description, schematics, and printed circuit board (PCB) layout that demonstrate TI's
recommended practices for these devices.
Table of Contents
1 Introduction.............................................................................................................................................................................3
2 Hardware Overview................................................................................................................................................................ 3
2.1 AC-MB Settings..................................................................................................................................................................3
2.2 ADCx120Q1EVM-PDK Hardware Settings........................................................................................................................ 6
3 Software Overview................................................................................................................................................................12
3.1 PurePath Console 3 Installation.......................................................................................................................................12
3.2 ADCx120Q1EVM GUI Installation....................................................................................................................................13
4 GPIO1 Settings......................................................................................................................................................................15
5 Master Mode Operation........................................................................................................................................................16
6 Quick Start.............................................................................................................................................................................16
6.1 Configuring the Audio Serial Bus for the I2S Output........................................................................................................ 18
6.2 Saving a Configuration.....................................................................................................................................................19
7 Schematic and Bill of Materials...........................................................................................................................................20
7.1 ADCx120Q1EVM-PDK Schematic and Bill of Materials.................................................................................................. 20
7.2 AC-MB Schematic and Bill of Materials........................................................................................................................... 24
7.3 Matlab Audio Capture Example....................................................................................................................................... 29
List of Figures
Figure 2-1. AC-MB Audio Serial Interface Routing...................................................................................................................... 3
Figure 2-2. AC-MB USB Audio Setting........................................................................................................................................ 4
Figure 2-3. AC-MB Optical or Auxiliary Analog Audio Setting..................................................................................................... 4
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Figure 2-4. AC-MB External Audio Setting.................................................................................................................................. 4
Figure 2-5. AC-MB Connection with External Audio Serial Interface...........................................................................................5
Figure 2-6. Power-Supply Distribution of the AC-MB.................................................................................................................. 5
Figure 2-7. PCMx120-Q1EVB Input Architecture........................................................................................................................ 6
Figure 2-8. PCMx120-Q1EVB Connection for Line Input Application..........................................................................................7
Figure 2-9. Onboard Mic Jumpers............................................................................................................................................... 9
Figure 2-10. External Mics: 2x Analog Microphones................................................................................................................. 10
Figure 2-11. External Mics: 4x Digital Microphones................................................................................................................... 11
Figure 2-12. External Mics: 2x Analog and 2x Digital Microphones...........................................................................................11
Figure 3-1. PurePath Console 3 Installation.............................................................................................................................. 12
Figure 3-2. PurePath Console 3 App Center............................................................................................................................. 13
Figure 3-3. Initial GUI Configuration.......................................................................................................................................... 13
Figure 3-4. Audio Config Tab..................................................................................................................................................... 14
Figure 3-5. Hardware Connect.................................................................................................................................................. 14
Figure 4-1. GPIO1 Function and Output Drive Settings............................................................................................................ 15
Figure 4-2. GPIO1 Schematic....................................................................................................................................................15
Figure 6-1. Loading Presets...................................................................................................................................................... 16
Figure 6-2. Onboard Mic Preset................................................................................................................................................ 16
Figure 6-3. MIC Bias Configuration........................................................................................................................................... 17
Figure 6-4. Standby to Active Mode.......................................................................................................................................... 17
Figure 6-5. Disabled Controls in Active Mode........................................................................................................................... 17
Figure 6-6. Audio Serial Bus Tab............................................................................................................................................... 18
Figure 6-7. ASI Format Configuration........................................................................................................................................18
Figure 6-8. Clock Monitor Pane................................................................................................................................................. 18
Figure 6-9. Channel Output Configuration and Diagram........................................................................................................... 19
Figure 6-10. Saving a Configuration in PPC3............................................................................................................................19
Figure 7-1. ADCx120Q1EVM-PDK Schematics........................................................................................................................ 20
Figure 7-2. AC-MB Schematics................................................................................................................................................. 24
List of Tables
Table 1-1. PCMx120-Q1 Family...................................................................................................................................................3
Table 2-1. Onboard Mic Jumper Configuration............................................................................................................................ 8
Table 7-1. ADCx120EVM-PDK Bill of Materials.........................................................................................................................21
Table 7-2. AC-MB Bill of Materials............................................................................................................................................. 25
Trademarks
PurePath™ is a trademark of Texas Instruments.
Audio Toolbox™ is a trademark of MathWorks.
All trademarks are the property of their respective owners.
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1 Introduction
The ADCx120Q1EVM-PDK is an evaluation module (EVM) designed to demonstrate the performance and
functionality of the PCMx120-Q1 family of devices. This family includes the devices shown in Table 1-1 with
differences in performance and function noted. The family also includes the PCMD3140-Q1, which is the digital
mic only version of the device.
Table 1-1. PCMx120-Q1 Family
Device SNR Without DRE (dB) SNR With DRE (dB)
PCM3120-Q1 106 N/A
PCM5120-Q1 108 120
PCM6120-Q1 112 123
PCMD3140-Q1 127 (5th-order PDM) N/A
2 Hardware Overview
The evaluation kit consists of the PCMx120-Q1EVB daughterboard and the AC-MB motherboard. The
motherboard is used to provide power, control, and digital audio signals to the evaluation module. The
daughterboard contains the PCMx120-Q1 device and its input connections.
2.1 AC-MB Settings
2.1.1 Audio Serial Interface Settings
The AC-MB provides the digital audio digital signals to the evaluation module from the universal serial bus
(USB), optical, stereo jack, and external audio serial interface (ASI) header. Figure 2-1 shows a block diagram of
the ASI routing on the AC-MB.
MUX
USB
Optical Input
Stereo Analog
Input
External ASI Header
Source
Selector
(SW2)
Audio
Processor
PCM921 1Optical Output
To EVM
Figure 2-1. AC-MB Audio Serial Interface Routing
Switch SW2 on the AC-MB selects the audio serial bus that interfaces with the PCMx120 -Q1 EVB. Next to
switch SW2, the AC-MB has a quick reference table to identify the audio serial interface source options and
switch settings. The AC-MB acts as the master for the audio serial interface, with three different modes of
operation: USB, optical or analog, or external ASI.
2.1.1.1 USB
The serial interface clocks and data are provided from the USB interface. The sampling rate and format are
determined by the USB audio class driver on the operating system. The default settings for the USB audio
interface are 32-bit frame size, 48-kHz sampling rate, BCLK and FSYNC ratio is 256, and the format is time-
division multiplexing (TDM).
The AC-MB is detected by the OS as an audio device with the name TI USB Audio UAC2.0. Figure 2-2
illustrates the AC-MB audio setting for the USB mode of operation.
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Figure 2-2. AC-MB USB Audio Setting
2.1.1.2 Optical or Auxilary Analog Audio Input
Serial interface signals are provided from the PCM9211 digital transceiver, which is capable of sending digital
data to the EVB from an analog input or optical input. Meanwhile, the data from the EVB can be streamed
through the optical output. Figure 2-3 shows the AC-MB audio setting for the optical and analog mode of
operation.
Figure 2-3. AC-MB Optical or Auxiliary Analog Audio Setting
The optical output of the AC-MB streams the data captured on the EVM with the format determined by the
input source used. When there is an optical input connected, the LOCK LED must be ON, and the PCM9211
streams the audio serial interface clocks with the format determined by the optical input frame. The digital data
from the optical input is streamed to the evaluation module. If the optical input is not connected, the PCM9211
captures the input signal provided through the analog input, and streams the signal to the evaluation module.
This feature can be useful when a digital input DAC is connected to the AC-MB, providing an analog input for
quick evaluation. In Auxiliary Analog Audio mode the audio serial interface format is fixed to a 24-bit, 48-kHz, I2S
mode.
2.1.1.3 External
In this mode, the audio serial interface clocks for the evaluation board are provided through connector J7 from
an external source. This architecture allows the use of an external system to communicate with the evaluation
board, such as a different host processor or test equipment (for instance, Audio Precision PSIA). The clocks
generated from the USB interface and PCM9211 are isolated with this setting. Figure 2-4 shows the AC-MB
audio setting for the external mode of operation.
Figure 2-4. AC-MB External Audio Setting
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Figure 2-4 shows how to connect the external audio interface, with the top row for the signal and the bottom row
for ground.
Figure 2-5. AC-MB Connection with External Audio Serial Interface
2.1.2 AC-MB Power Supply
The complete EVM system is powered from a single 5-V power supply. However, the motherboard has different
low-dropout regulators (LDOs) integrated that provide the required power supplies to the different blocks of the
board. Figure 2-6 shows a block diagram depicting the power structure of the AC-MB.
To EVM
Figure 2-6. Power-Supply Distribution of the AC-MB
The AC-MB can be powered from the host computer by using the USB 5-V power supply (VBUS) by shorting
header J5, USB POWER. Additionally, the AC-MB can be powered from an external power supply connected to
terminal J4, EXTERNAL POWER. Header J5 must be open for external supply operation. The IOVDD voltage
for the digital signals that is provided to the evaluation module is generated on the motherboard from the main
power supply (USB or external). The voltage levels available are 1.8 V and 3.3 V, and can be selected via
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the J3 header IOVDD. For 1.8-V operation, short pins 2 and 3 of header J3; for 3.3-V operation, short pins 1
and 2. When the motherboard is fully powered and the power supplies from the onboard LDOs are correct, the
green POWER LED (D3) turns ON. The USB READY LED indicates that a successful USB communication is
established between the AC-MB and the host computer.
2.2 ADCx120Q1EVM-PDK Hardware Settings
The PCMx120-Q1 evaluation module has several input configuration options and offers extensive flexibility to
allow the user to evaluate the device across multiple operation modes. The different operation modes are
highlighted in this section. The INxP and INxM pins of the PCMx120-Q1 can optionally connect to onboard
microphones for quick evaluation, and can be optionally configured to bypass the input decoupling capacitors
for evaluating the functionality of digital microphones, GPIOs, or in DC coupled applications. Figure 2-7 shows a
diagram of the EVM input architecture.
Figure 2-7. PCMx120-Q1EVB Input Architecture
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2.2.1 Line Inputs
For the line input configuration (shown in Figure 2-8), the PCMx120-Q1 captures the audio signal provided
through terminals J2 (IN1) and J3 (IN2). The input accepted in this mode is a differential, 2-VRMS, full-scale
audio signal. If a single-ended source is used, then 1-VRMS signal is supported
Figure 2-8. PCMx120-Q1EVB Connection for Line Input Application
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2.2.2 Onboard Microphone Configuration
The ADCx120Q1EVM-PDK comes equipped with 2 onboard microphones: 1x ICS-40740 analog microphone
and 1x T5818 digital microphone. The ICS-40740 can be connected to IN1 and the T5818 can be connected
to IN2 with onboard shunts using the jumper settings shown in Table 2-1 and Figure 2-9. MICBIAS is used to
power the ICS-40740, so header J8 must be set to MICBIAS. There must not be any connections to J2 or J3
during onboard microphone use to preserve the performance of the microphones. The PCMD3140Q1EVM-PDK
only includes the T5818 digital microphone, but the same script in Table 2-1 and Figure 2-9 can be used for
configuring the microphone.
Table 2-1. Onboard Mic Jumper Configuration
Jumper Setting
J13 Short
J16 Short
J17 Short
J12 Short
J15 Short
J19 Short
J4 Open
J5 Open
J6 Open
J7 Open
J8 Pins 1-2; MICBIAS
J9 Open (if 3.3V AVDD is used)
Short (if 1.8V AVDD is used)
J10 Open
J11 Pins 1-2: AVDD = 3.3V
Pines 2-3: AVDD = 1/8V
J14 Short
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Figure 2-9. Onboard Mic Jumpers
To configure the ADC for both onboard microphones, use the Onboard Microphones preset in the PPC3 GUI, or
copy and paste the following script in I2C master app:
#####On-Board MIC Config######
w 9c 02 81 #Wake up device and enable AREG
w 9c 01 01 #Software Reset
d 100 #Wait 100ms
w 9c 00 00 #Set page 0
w 9c 02 81 #Wake up device and enable AREG
d 10 #wait 10 ms
w 9c 0d 01 #Set Ch-3 data to ASI left slot 1
w 9c 22 41 #Set IN2M_GPO1 to PDCMLK output (Default 3.072MHz)
w 9c 2b 50 #Set IN2P_GPI1 to PDMDIN2 for channel 3 and 4
w 9c 73 A0 #Enable input Ch-1 and Ch-3
w 9c 74 A0 # Enable ASI Output Ch-1 and Ch-3 slots
w 9c 75 E0 # Power-up ADC, MICBIAS and PLL
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2.2.3 External Microphone Configurations
The PCMx120-Q1 family of devices support both analog and digital PDM inputs with up to 2 channels of analog
input or 4 channels of digital PDM input. It is also possible to use various combinations of analog and digital
inputs with up to 2 analog inputs and 2 digital inputs operating simultaneously.
Single-ended or differential analog inputs can be applied on the following pin pairs: IN1P, IN1M, IN2P_GPI1,
IN2M_GPO1.
Digital PDM inputs can be applied to the following pins: IN2P_GPI1, MICBIAS_GPI2, GPIO1. A PDM clock can
also be output on pins: IN2M_GPO1, GPIO1.
On the EVM access to these pins is provided on terminals J1, J2, J3, and J10. Figure 2-10, Figure 2-11, and
Figure 2-12 illustrate the recommended pin connections for common use-cases.
Note, the GPIO1 pin is referenced to the IOVDD domain while IN2P_GPI1, MICBIAS_GPI2, and IN2M_GPO1
are all referenced to AVDD. Thus, if using 2 analog mics in addition to digital mics it is recommended that
AVDD and IOVDD be set to the same voltage or a level translator be placed between GPIO1 and the digital
microphone. If only 1 analog mic is used then it is recommended to use IN1P and IN1M for the analog mic. If
digital mics are used, it is recommended to use IN2M_GPO1 to generate the PDMCLK signal.
AMIC1 AMIC2
Figure 2-10. External Mics: 2x Analog Microphones
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DMIC3/4
GND
PDMOUT
AVDD
PDMCLK
DMIC1/2
GND
PDMOUT
AVDD
PDMCLK
Figure 2-11. External Mics: 4x Digital Microphones
AMIC1
-
GND
+
AMIC2
-
GND
+
DMIC1/2
GND
PDMOUT
AVDD
PDMCLK
AVDD AVDD
*Requires AVDD = IOVDD
Figure 2-12. External Mics: 2x Analog and 2x Digital Microphones
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3 Software Overview
Texas Instrument's PurePath™ Console 3 (PPC3) graphical development suite is a program that serves as a
platform for many of TI's audio products. PPC3 is designed to simplify the evaluation, configuration, and debug
process associated with the development of audio products.
3.1 PurePath Console 3 Installation
The ADCx120Q1EVM-PDK GUI is an application that installs into the PPC3 framework. PPC3 must be
installed prior to downloading the ADCx120Q1EVM-PDK GUI. To download the PPC3, visit www.ti.com/tool/
PUREPATHCONSOLE and request access. If the PPC3 is already installed, proceed to Section 3.2. Figure 3-1
shows the setup directory for the PPC3 installation.
Figure 3-1. PurePath Console 3 Installation
Open the PPC3 installer and follow the instructions in the setup wizard.
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3.2 ADCx120Q1EVM GUI Installation
3.2.1 Software Setup
Open the PPC3 application in the directory chosen for the GUI installation in Section 3.1. Figure 3-2 shows the
resulting app center window. Click on the PCMx120-Q1 app tile.
Figure 3-2. PurePath Console 3 App Center
The PCMx120-Q1 GUI is designed to work with up to four devices at any time. As shown in Figure 3-3, choose
the 1 device radial button and click New.
Figure 3-3. Initial GUI Configuration
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As shown in Figure 3-4, the GUI opens to the Audio Config tab.
Figure 3-4. Audio Config Tab
Before changing any parameters, check the lower left corner of the PPC3 window, as shown in Figure 3-5, to
verify that the EVM is connected. If no EVM is detected, the text will read PCMx120-Q1 offline. If the EVM is
detected, a Connect button appears. Clicking this button connects the hardware.
Figure 3-5. Hardware Connect
When the hardware is connected, the Connect button changes to read Disconnect, and the device is ready to be
configured.
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4 GPIO1 Settings
The GPIO1 pin can be configured for a variety of different functions. Figure 4-1 shows the possible settings.
By default, the EVM is configured with GPIO1 connected to an interrupt LED to match the default GPIO1
configuration of the PCMx120-Q1 device. This setting causes the INTERRUPT LED on the board to light
whenever an IRQ occurs, such as when the VAD is configured to generate an interrupt on voice detection. If
GPIO1 is to be used a function other than interrupt, modifications may be required to the 0-Ω resistors installed.
Figure 4-2 shows a schematic for the GPIO1 pin layout.
Figure 4-1. GPIO1 Function and Output Drive Settings
Figure 4-2. GPIO1 Schematic
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5 Master Mode Operation
To operate ADCx120Q1EVM-PDK in master mode, S1 and S0 on the AC-MB must first be set to "External ASI"
as illustrated in Figure 2-4.
The device does not have a dedicated MCLK pin, the master clock can be applied at GPIO1, IN2P_GPI1, or
MICBIAS_GPI2. Since GPI1 and GPI2 are multipurpose pins shared with analog inputs and MICBIAS, using
them as the MCLK input limits the devices functionality. It is recommended to use the GPIO1 pin for MCLK.
To use GPIO1 as MCLK the MCLK signal must either be applied at the J10 terminal, or at the "External ASI"
header on the AC-MB board with the other clocks. To use the "External ASI" header, it is necssary to install a
0-Ohm resistor at R11 on the EVM, which is depopulated by default.
6 Quick Start
Configure the AC-MB for the USB audio (TDM) and the PCMx120-Q1EVB for the onboard microphone inputs.
The GUI comes with preset files to that can be used for easy initial setup. Select the Load preset option in the
top corner of the GUI and load the On Board Microphone setting, as shown in Figure 6-1 and Figure 6-2. Be sure
to populate the jumpers described in the settings as described in Table 2-1.
Figure 6-1. Loading Presets
Figure 6-2. Onboard Mic Preset
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As shown in Figure 6-3, make sure AVDD is selected for the MIC bias voltage and powered up.
Figure 6-3. MIC Bias Configuration
The default state for the PCMx120-Q1 is standby mode and, with the exception of the channel digital volume, all
device configurations must be done in standby mode. The PCMx120-Q1 does not provide a digital audio output
in standby mode. Figure 6-4 shows how to change the mode from standby to active.
Figure 6-4. Standby to Active Mode
When active mode is enabled, any controls not configurable in active mode are grayed out. These controls can
be changed again when the device is brought out of active mode. Figure 6-5 shows which controls are disabled.
Figure 6-5. Disabled Controls in Active Mode
Audio can now be captured on your PC using the audio program of your choice.
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6.1 Configuring the Audio Serial Bus for the I2S Output
The PCMx120-Q1 features a highly flexible audio serial bus that can be configured to implement a wide range of
data formats. The default format is TDM, however the GUI can be used to change the data format to I2S. This
section describes how to configure the PCMx120-Q1 EVM for a 2-channel I2S output to a USB audio at 16 bits
and 48 kHz. Configure the AC-MB for USB audio as described in Section 6. As shown in Figure 6-6, select the
audio serial bus tab.
Figure 6-6. Audio Serial Bus Tab
In the ASI format configuration pane (shown in Figure 6-7), change the protocol format to I2S, and the word
length to 16 bits.
Figure 6-7. ASI Format Configuration
When the protocol format is changed to I2S in the GUI, the USB audio processor on the AC-MB also changes
the audio format to I2S. The GUI reads the ASI status register (page 0 register 0x15), providing the detected
sampling rate and BCLK and FSYNC ratio. The ASI status register can also be read manually in the audio serial
bus tab by clicking the Read button, as shown in Figure 6-8, in the clock monitor pane.
Figure 6-8. Clock Monitor Pane
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The default slot assignment for channel 1 is left slot 0 and the default slot assignment for channel 2 is left slot
1. As shown in Figure 6-9, change the channel 2 slot assignment to right slot 0. The diagram at the top of the
window updates to display the data format and slots selected.
Figure 6-9. Channel Output Configuration and Diagram
The AC-MB USB audio currently supports only two channels per data line when in I2S mode and the BCLK and
FSYNC ratio is fixed at 64. The EVM is now ready for use with the audio recording program of your choice.
6.2 Saving a Configuration
To save a configuration, as shown in Figure 6-10, click the upper left corner of the PPC3 window and select
Save. The configuration is saved as a .ppc3 file. To load a saved configuration, click the upper left corner of the
PPC3 window and select Open. Navigate to the location of the saved .ppc3 file, and click Open.
Figure 6-10. Saving a Configuration in PPC3
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7 Schematic and Bill of Materials
7.1 ADCx120Q1EVM-PDK Schematic and Bill of Materials
This section provides the schematics and bill of materials (BOM) for the ADCx120Q1EVM-PDK.
7.1.1 ADCx120Q1EVM-PDK Schematic
Figure 7-1 shows the schematics for the ADCx120Q1EVM-PDK.
DC133
GNDGND
AVDDIOVDD
GND
GND
GND
GND
16V
0.1uF
C11
16V
0.1uF
C10
SDOUT
BCLK
FSYNC
GPIO1
MICBIAS
GND
IN1P_J
IN1M_J
IN2P
IN2M
16V
0.1uF
C15
16V
0.1uF
C17
GND GND GND GND
16V
1uF
C26
GND
GND
GPIO1
GND
MCLK
GPIO1 Selection
GPIO1
VREF AREG DREG
TP1
IN1P
TP2
IN1M
TP3
IN2P
TP4
IN2M
GPIO1 is optional for MCLK or INTz
GND
TLV320ADCx120 CIRCUIT
IN2P_GPI1
IN2M_GPO1
MICBIAS_GPI2
IOVDD-MB IOVDD
GND
TP9
GND
TP14
GND
GND
TP12
MICBIAS
MICBIAS
TP8
AVDD DNP
AVDD
TP13
IOVDD DNP
IOVDD
Power Test Points
VREFAREG
DREG
TP6
AREG
TP7
DREG
TP11
VREF
SCL
SDA
MICBIAS
IN1P_J
IN1M_J
GND
AMIC1P
AMIC1M
J13
GND
16V
0.1uF
C21
On-Board Microphone
SCL
SDA
SS0
SCLK
MISO
MOSI
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
39 40
41 42 43 44
J18
GND
+5V
IOVDD-MB
DIN1
SDOUT
MCLK
BCLK
FSYNC
DIN2
DOUT2
GPO2
GPI2
GNDGND
DIN3
DIN4
DOUT3
DOUT4
SS1
Connector to AC-MB
TP5
IOVDD-MB
TP10
+5V
+5VIOVDD-MB
RSTz
Power
Power LED
A0
1
A1
2
A2
3
VSS
4SDA 5
SCL 6
WP 7
VCC 8
U5
24LC512-I/ST
IOVDD-MBIOVDD-MB
SCL
SDA
2.2k
R13
16V
0.1uF
C19
GND
GND GND
EEPROM for Firmware ID
2.2k
R16
IOVDD-MB
2.2k
R17
Main
Digital Signal Test Points
SDOUT
MCLK
BCLK
FSYNC SCL
SDA
TP17
SDOUT
TP15
FSYNC
TP16
BCLK
TP18
MCLK
TP19
SCL
TP20
SDA
GPIO1
TP22
GPIO1
From Motherboard
From DUT
To DUT
Jumper Description
J14
Designator Function
MICBIAS Connection to On-Board Mic
IN1P Connection to On-Board Mic
IN1M Connection to On-Board Mic
J15
J16
J5-J12
Capacitor Bypass for direct connection from
DUT input pins to input terminals
Designator Function
Connection to DUT GPOJ13
16V
1uF
C2
16V
1uF
C3
16V
1uF
C4
16V
1uF
C5
16V
1uF
C13
10V
10uF
C16
10V
10uF
C18
10V
10uF
C9
16V
1uF
C14
AVDD
16
IOVDD
9
IN1M
2IN1P
1
IN2M_GPO1
4IN2P_GPI1
3
AREG 17
BCLK 7
DREG 14
FSYNC 8
GPIO1 11
MICBIAS_GPI2
19
SCL 13
SDA 12
SDOUT 6
VREF 18
Thermal_Pad(VSS) 21
VSS 5
VSS 10
VSS 15
VSS 20
PCM3120QRTER Q1
U1
AVDD
GND
VDD
5
CLK
4
DATA 1
SELECT
2GND 3
MK2
MMICT5818-00-012
J12
GND
16V
0.1uF
C20
On-Board Microphone
33R5
0
R6
0
R8
1
2
3
J8
AVDD
GND
1
2
3
4
J3
1
2
3
4
J1
GPO1
1 2
J9
+3.3V
+1.8V
GND GND
GND GND
16V
1µF
C1
+5V
16V
1µF
C7
16V
1µF
C8
5V to 3.3V/1.8V LDO
1 2
J14
1 2 3
J11
AVDD
+3.3V+1.8V
GPI1
GPI1
GND
2
1 6
Q1A
SI1035X-T1-GE3
5
4
3
Q1B
SI1035X-T1-GE3
Red
1
2
D2
LTST-C150CKT
5.1k
R12
10k
R14
442
R15
GND
+3.3VIOVDD
16V
1uF
C6
DNP
GND
EN1
1
IN
2
EN2
3GND 4
OUT2 5
OUT1 6
TLV7103318QDSERQ1
U2
IN1P
IN1M
GPO1
IN2M_GPO1
1
2
3
4
J2
J5
J4
J6
1 2 3
J7
J17
J16
J15
J19
GPI2
0
R4
DNP
GND
0
R3
DNP
GND
0
R7
DNP
MICBIAS
0
R2
DNP
VDD
1
2
3
GND 4
MK1
ICS-40740
Green
1
2
D1
442
R18
AVDD
GND
Green
1
2
D3
IOVDD
GND
IOVDD
AVDD AVDD
1
23
Q2
BSS138W
442
R19
10.0k
R1
MICBIAS
INTz
1
2
J10
ED555/2DS
0
R10
0
R11
DNP
33
R9
Figure 7-1. ADCx120Q1EVM-PDK Schematics
Schematic and Bill of Materials www.ti.com
20 ADCx120Q1EVM-PDK, PCMD3140Q1EVM-PDK Evaluation Module SBAU398 – MARCH 2022
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