Texas Instruments AFE11612EVM User manual

User’s Guide
AFE11612EVM User's Guide
ABSTRACT
This user’s guide describes the characteristics, operation, and use of the AFE11612EVM evaluation module
(EVM). This EVM is designed to evaluate the performance of the AFE11612-SEP analog front end (AFE) in a
variety of configurations. Throughout this document, the terms evaluation board, evaluation module, and EVM
are synonymous with the AFE11612EVM. This document includes a schematic, printed-circuit board (PCB)
layouts, and a complete bill of materials.
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Table of Contents
1 Overview..................................................................................................................................................................................3
1.1 Kit Contents........................................................................................................................................................................3
1.2 Related Documentation from Texas Instruments............................................................................................................... 3
2 System Setup.......................................................................................................................................................................... 4
2.1 Software Setup...................................................................................................................................................................4
2.2 Hardware Setup................................................................................................................................................................. 6
3 Detailed Description............................................................................................................................................................... 7
3.1 Hardware Description.........................................................................................................................................................7
3.2 Software Description........................................................................................................................................................ 12
4 Schematic, PCB Layout, and Bill of Materials................................................................................................................... 19
4.1 Schematics.......................................................................................................................................................................20
4.2 PCB Layout...................................................................................................................................................................... 22
4.3 Bill of Materials.................................................................................................................................................................24
List of Figures
Figure 2-1. Software Installation Path..........................................................................................................................................4
Figure 2-2. FTDI USB Drivers......................................................................................................................................................5
Figure 3-1. AFE11612EVM Hardware Simplified Schematic....................................................................................................... 7
Figure 3-2. AFE11612EVM GUI Connection Detection............................................................................................................. 12
Figure 3-3. Interface Settings.................................................................................................................................................... 12
Figure 3-4. High Level Configuration Page................................................................................................................................13
Figure 3-5. DACs Subpage........................................................................................................................................................14
Figure 3-6. ADCs Subpage........................................................................................................................................................15
Figure 3-7. Alarms Subpage......................................................................................................................................................16
Figure 3-8. GPIO + Temp Subpage........................................................................................................................................... 17
Figure 3-9. Low Level Configuration Page................................................................................................................................ 18
Figure 3-10. Low Level Configuration Page Options................................................................................................................. 18
Figure 4-1. AFE11612EVM Schematic Page 1..........................................................................................................................20
Figure 4-2. AFE11612EVM Schematic Page 2..........................................................................................................................21
Figure 4-3. AFE11612EVM PCB Components Layout - Top Layer........................................................................................... 22
Figure 4-4. AFE11612EVM PCB Components Layout - Bottom Layer......................................................................................22
Figure 4-5. AFE11612EVM PCB Traces - Top Layer.................................................................................................................23
Figure 4-6. AFE11612EVM PCB Traces - Bottom Layer........................................................................................................... 23
List of Tables
Table 1-1. Contents of AFE11612EVM Kit...................................................................................................................................3
Table 1-2. Related Documentation.............................................................................................................................................. 3
Table 2-1. AFE11612EVM Power Supply Inputs..........................................................................................................................6
Table 2-2. AFE11612EVM Jumper Settings.................................................................................................................................6
Table 3-1. AFE11612EVM J7 Pin Definitions...............................................................................................................................8
Table 3-2. AFE11612EVM J21 Pin Definitions.............................................................................................................................8
Table 3-3. AFE11612EVM J13 Pin Definitions.............................................................................................................................9
Table 3-4. AFE11612EVM J9 Pin Definitions.............................................................................................................................10
Table 3-5. AFE11612EVM J17 Pin Definitions...........................................................................................................................10
Table 3-6. AFE11612EVM J18 Pin Definitions...........................................................................................................................11
Table 3-7. AFE11612EVM J19 Pin Definitions...........................................................................................................................11
Table 4-1. AFE11612EVM Bill of Materials................................................................................................................................ 24
Trademarks
Windows™ is a trademark of Microsoft Corporation.
LabVIEW™ is a trademark of National Instruments.
All trademarks are the property of their respective owners.
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1 Overview
The AFE11612EVM is an easy-to-use platform that evaluates the functionality and performance of the
AFE11612‑SEP device.
The AFE11612‑SEP is a highly-integrated, low-power, complete analog monitor and controller that includes a
16-channel (12-bit) analog-to-digital converter (ADC), 12-channel (12-bit) digital-to-analog converter (DAC), eight
GPIOs, two remote temperature sensor channels, and one local temperature sensor channel. The device also
features input out-of-range alarms, and a configurable serial interface supporting SPI and I2C protocols with 5-V
and 3-V logic.
1.1 Kit Contents
Table 1-1 details the contents of the EVM kit. Contact the nearest TI Product Information Center if any
component is missing. Make sure to verify the latest versions of the related software at the Texas Instruments
website, www.ti.com.
Table 1-1. Contents of AFE11612EVM Kit
Item Quantity
AFE11612EVM evaluation board PCB 1
USB micro-B plug to USB-A plug cable 1
1.2 Related Documentation from Texas Instruments
The following document provides information regarding Texas Instruments integrated circuits used in the
assembly of the AFE11612EVM. This user's guide is available from the TI web site under literature number
SLAU892. Any letter appended to the literature number corresponds to the document revision that is current at
the time of the writing of this document. Newer revisions are available from the TI web site at www.ti.com, or call
the Texas Instruments Literature Response Center at [phone] or the Product Information Center at (972)
644-5580. When ordering, identify the document by both title and literature number.
Table 1-2. Related Documentation
Document Literature Number
AFE11612‑SEP product page SLASF76
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2 System Setup
2.1 Software Setup
This section provides the procedure for EVM software installation.
2.1.1 Operating Systems
The EVM software is compatible with the Windows™ 10 operating system.
2.1.2 Software Installation
Before software installation, make sure that the AFE11612EVM is not connected to the computer.
The software can be downloaded from the EVM tool folder. After the software is downloaded, navigate to the
download folder, and run the AFE11612EVM software installer executable.
When the AFE11612EVM software is launched, an installation dialog window opens and prompts the user to
select an installation directory.
Figure 2-1 shows the Destination Directory window. The default software path is: C:\Program Files (x86)\Texas
Instruments\AFE11612EVM.
Figure 2-1. Software Installation Path
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The software installation also installs the FTDI USB drivers, and automatically copies the required LabVIEW™
software files and drivers to the computer. The FTDI USB drivers install in a second executable that is
automatically run by the AFE11612EVM software installer. Figure 2-2 shows the window that is automatically
launched after the AFE11612EVM software installation is complete.
Figure 2-2. FTDI USB Drivers
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2.2 Hardware Setup
This section describes the overall system setup for the EVM. A computer runs the software that provides an
interface to the AFE11612EVM through the onboard controller.
The USB connection generates 5 V of power for use as the AFE supply voltage. The onboard controller
generates 3.3 V of power for the input/output (IO) signals generated by the controller.
2.2.1 Electrostatic Discharge Caution
CAUTION
Many of the components on the AFE11612EVM are susceptible to damage by electrostatic
discharge (ESD). Observe proper ESD handling precautions when unpacking and handling the
EVM, including the use of a grounded wrist strap at an approved ESD workstation.
2.2.2 Power Configurations and Jumper Settings
The AFE11612EVM provides electrical connections to the device supply pins. Table 2-1 shows these
connections.
Table 2-1. AFE11612EVM Power Supply Inputs
AFE11612EVM
Connector
Supply
Name Voltage Range
J1 VCC 1.8 V to 5.5 V
J2 VDD 1.8 V to 5.5 V (5 V available from the USB). Remove J6 if applying an external VDD to the AFE.
J3 VIO 1.8 V to 5.5 V
J4 GND 0 V
The jumper settings on the AFE11612EVM are crucial to the proper operation of the EVM. Table 2-2 provides the
details of the configurable jumper settings on the EVM.
Table 2-2. AFE11612EVM Jumper Settings
Jumper Default Position Available Option Description
J6.1-2 Closed: 5-V USB supply connected to EVM
VDD supply
Open: 5-V USB supply disconnected from EVM
VDD supply
External or onboard VDD
selection
J6.3-4 Closed: 3.3-V USB supply connected to EVM
VIO supply
Open: 3.3-V USB supply disconnected from EVM
VIO supply
External or onboard VIO
selection
J10, J11,
J12, J14,
J15
2-3: I2C enabled 1-2: SPI enabled I2C or SPI selection
J5 Closed: EVM VDD supply connected to AFE
VCC
Open: EVM VDD supply disconnected from AFE
VCC AFE VCC source selection
If an external supply is applied to the EVM, remove jumper J6.1 to disconnect the 5-V USB supply from the DAC
VDD pin.
2.2.3 Connecting the Hardware
After the power and jumper configurations are set up as per Section 2.2.2 , connect the USB cable from the
AFE11612EVM USB port to the computer.
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3 Detailed Description
3.1 Hardware Description
The following sections provide detailed information on the EVM hardware and jumper configuration settings.
3.1.1 Theory of Operation
Figure 3-1 shows a simplified schematic of the AFE11612EVM board. All of the AFE pins are accessible through
pin headers.There are two 12-pin connectors that provide access to all of the DAC pins, while a single 32-pin
header is used to access the ADC channels. Two 12-pin connectors are used for the digital input and output
(I/O) pins and the serial interface signal lines. For access to the eight GPIO pins, there are two 8-pin connectors
located near the bottom of the board. Four of these pins (connected to the J19 header) are used as remote
temperature sensor inputs D1+, D1–, D2+ and D2–. The AFE11612EVM board features two bipolar junction
transistors (BJTs); one BJT is connected across D1+ and D1–, and the other BJT is connected across D2+ and
D2–.
AFE11612-SEP
J18, J19
8 GPIO Connectors
(including temperature
sense inputs)
USB Port
J6
USB 5-V and
3.3-V (VIO)
Connections
J9, J17
Digital I/O and
Communications
J13
16-Channel
ADC Input
Connectors
J1, J2, J3, J4
External Power-Supply
Connectors
J7, J21
12-Channel
DAC
Output
Connectors
Figure 3-1. AFE11612EVM Hardware Simplified Schematic
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3.1.1.1 Signal Definitions
The AFE11612EVM provides access to all pins on the device through seven pin connectors.Table 3-1 and
Table 3-2 list the pin definitions for connectors J7 and J21, respectively, which contain the DAC output pins
connections for the AFE11612-SEP.
Table 3-1. AFE11612EVM J7 Pin Definitions
Pin# Signal Description
1 DAC6 Output pin for DAC6
2 GND Ground
3 DAC7 Output pin for DAC7
4 GND Ground
5 DAC8 Output pin for DAC8
6 GND Ground
7 DAC9 Output pin for DAC9
8 GND Ground
9 DAC10 Output pin for DAC10
10 GND Ground
11 DAC11 Output pin for DAC11
12 GND Ground
Table 3-2. AFE11612EVM J21 Pin Definitions
Pin# Signal Description
1 DAC5 Output pin for DAC5
2 GND Ground
3 DAC4 Output pin for DAC4
4 GND Ground
5 DAC3 Output pin for DAC3
6 GND Ground
7 DAC2 Output pin for DAC2
8 GND Ground
9 DAC1 Output pin for DAC1
10 GND Ground
11 DAC0 Output pin for DAC0
12 GND Ground
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The AFE11612-SEP device contains 16 analog inputs, 12 of which are single-ended (ADC4 through ADC15)
and have an input range of 0 V to 5 V. The other four inputs (ADC0 through ADC3) can be configured as four
single-ended inputs for two fully differential channels, depending on the setup of the ADC channel registers.
These signal pins are connected to J13. Table 3-3 lists the pin definitions.
Table 3-3. AFE11612EVM J13 Pin Definitions
Pin# Signal Description
1 ADC0 ADC channel 0 input
2 GND Ground
3 ADC1 ADC channel 1 input
4 GND Ground
5 ADC2 ADC channel 2 input
6 GND Ground
7 ADC3 ADC channel 3 input
8 GND Ground
9 ADC4 ADC channel 4 input
10 GND Ground
11 ADC5 ADC channel 5 input
12 GND Ground
13 ADC6 ADC channel 6 input
14 GND Ground
15 ADC7 ADC channel 7 input
16 GND Ground
17 ADC8 ADC channel 8 input
18 GND Ground
19 ADC9 ADC channel 9 input
20 GND Ground
21 ADC10 ADC channel 10 input
22 GND Ground
23 ADC11 ADC channel 11 input
24 GND Ground
25 ADC12 ADC channel 12 input
26 GND Ground
27 ADC13 ADC channel 13 input
28 GND Ground
29 ADC14 ADC channel 14 input
30 GND Ground
31 ADC15 ADC channel 15 input
32 GND Ground
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Table 3-4 and Table 3-5 list the pin definitions for connectors J9 and J17, respectively, which contain all digital
input and output signals for the device
Table 3-4. AFE11612EVM J9 Pin Definitions
Pin# Signal Description
1 GND Ground
2 I2C/SPI Communication mode indicator bit:
0 = I2C, 1 = SPI
3 GND Ground
4 A2 I2C address bit 2 (MSB)
5 GND Ground
6 SDO/A1 SPI output or I2C address bit 1
7 GND Ground
8 CS/A0 SPI chip select or I2C address bit 0 (LSB)
9 GND Ground
10 SCLK/SCL Clock signal for SPI or I2C serial interface
11 GND Ground
12 SDI/SDA SPI input or I2C data line
Table 3-5. AFE11612EVM J17 Pin Definitions
Pin# Signal Description
1 GND Ground
2DAC-CLR-0 DAC clear control signal 0 (digital input,
active low).
3 GND Ground
4CNVT External ADC conversion trigger input,
active low.
5 GND Ground
6 DAV Data available indicator, active low output
7 GND Ground
8 RESET Reset input, active low.
9 GND Ground
10 ALARM Global alarm, open-drain output
11 GND Ground
12 DAC-CLR-1 DAC clear control signal 1 (digital input,
active low).
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Table 3-6 and Table 3-7 list the pin definitions for the J18 and J19 headers, respectively, which contain the
AFE11612-SEP GPIO signals. If remote temperature sensors are not needed, remote sensor channels D1+,
D1–, D2+, and D2– can be configured as GPIOs on header J19.
Table 3-6. AFE11612EVM J18 Pin Definitions
Pin# Signal Description
1 GND Ground
2 GPIO-0 General-purpose I/O (GPIO0)
3 GND Ground
4 GPIO-1 General-purpose I/O (GPIO1)
5 GND Ground
6 GPIO-2 General-purpose I/O (GPIO2)
7 GND Ground
8 GPIO-3 General-purpose I/O (GPIO3)
Table 3-7. AFE11612EVM J19 Pin Definitions
Pin# Signal Description
1 GND Ground
2 D1+/GPIO-4 General-purpose I/O (GPIO4) or remote
temperature sensor connection
3 GND Ground
4 D1–/GPIO-5 General-purpose I/O (GPIO5) or remote
temperature sensor connection
5 GND Ground
6 D2+/GPIO-6 General-purpose I/O (GPIO6) or remote
temperature sensor connection
7 GND Ground
8 D2–/GPIO-7 General-purpose I/O (GPIO7) or remote
temperature sensor connection
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3.2 Software Description
This section describes the features of the AFE11612EVM software, and discusses how to use these features.
The software provides basic control of all the AFE11612-SEP registers and functions.
3.2.1 Starting the Software
To launch the software, navigate to the Texas Instruments folder in the Start menu, and select the
AFE11612EVM icon.
Figure 3-2 shows that if the onboard controller is connected correctly, the status bar at the bottom of the screen
displays CONNECTED. If the controller is not properly connected or not connected at all, the status displays
DEMO. If the GUI is not displaying the CONNECTED status while the EVM is connected, unplug and reconnect
the EVM, and then relaunch the GUI software. If the display continues to display DEMO, uncheck the Demo
Mode checkbox (see Section 3.2.2.1, upper-right corner).
Figure 3-2. AFE11612EVM GUI Connection Detection
When the GUI starts, the Interface Settings window pops up. Figure 3-3 shows the Interface Settings window.
This window contains drop-down menus that select protocol (SPI or I2C), and if I2C protocol is selected, the
I2C device address. The menu does not pop up if the GUI starts in Demo mode. In this case, uncheck the
Demo Mode checkbox. If the interface must be updated again, toggle the Demo Mode checkbox for the menu to
reappear.
Figure 3-3. Interface Settings
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3.2.2 Software Features
The AFE11612EVM GUI incorporates interactive functions that help configure an individual AFE11612-SEP
device using I2C or SPI communication. These functions are built into several GUI pages, as shown in the
following subsections. The menu bar on the far left of the GUI allows the user to switch between pages. The
menu bar displays the High Level Configuration page with DACs, ADCs, Alarms and GPIO + Temp subpages, as
well as the Low Level Configuration page.
Before using the GUI, see the AFE11612-SEP device data sheet for detailed programming instructions.
3.2.2.1 High Level Configuration Page
Figure 3-4 shows the High Level Configuration page that provides an interface to quickly configure
the parameters and relevant register settings for the respective AFE11612-SEP device. The High Level
Configuration page consists of the DACs, ADCs, Alarms and GPIO + Temp subpages.
Figure 3-4. High Level Configuration Page
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3.2.2.1.1 DACs Subpage
Figure 3-5 shows the DACs subpage. The DAC page gives the user an interface to observe and control the
different data registers, modes, and configurations available for each individual DAC channel. The AFE11612-
SEP contains 12 DACs with 12 bits of resolution. The DACs can be used with an internal or external reference.
To enable each DAC channel, select the respective checkbox in the Power DAC column.
Figure 3-5. DACs Subpage
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3.2.2.1.2 ADCs Subpage
Figure 3-6 shows the ADCs subpage. This page provides insight into the functionality of the AFE11612-SEP, a
16-channel, 12-bit ADC. The ADC block can be configured as 16 single-ended inputs (ADC0 to ADC15) or as
2 differential inputs (ADC0 to ADC3) plus 12 single-ended (ADC4 to ADC15). With VREF defined as the reference
voltage input to the ADC, the analog input range for the device can be selected as 0 V to VREF (2.5 V) or 0 V to
2 × VREF (5 V).
Figure 3-6. ADCs Subpage
Most of the controls listed within the ADC subpage are used to set up the ADC configuration register.
These controls include the conversion-rate and conversion-mode parameters, which are selectable through
the respective drop-down menu. The conversion mode can be either Auto or Direct. In Direct mode, the analog
inputs specified in the ADC channel registers are converted sequentially one time. In Auto mode, the analog
inputs are converted sequentially and repeatedly. After a conversion is completed, the ADC multiplexer returns
to the first channel and repeats the process.
The ADCs also have the option to use an external or internal reference. To enable the external reference,
press the External button located under ADC Reference. If the button is not selected, the internal reference is
enabled. When the external reference is selected, the ADC External Ref Value field is used to enter a value.
This value is used to calculate the ADC conversion in volts when the Display ADC Value in Volts checkbox is
selected.
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3.2.2.1.3 Alarms Subpage
Figure 3-7 shows the Alarms subpage. The Alarms page allows the user to view and access the AFE11612-SEP
register bits related to common programmable settings and alarms.
Figure 3-7. Alarms Subpage
The false-alarm protection settings for each alarm are also displayed. These settings allow the user to choose
how many consecutive triggers must occur before the alarm is activated. Additionally, the bottom left of the GUI
includes a checkbox that enables or disables the alarm pin and alarm latch functions.
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3.2.2.1.4 GPIO + Temp Subpage
Figure 3-8 shows the GPIO + Temp subpage. The GPIO + Temp page allows the user to view and access the
AFE11612-SEP registers related to the three temperature monitoring functions. Press the READ TEMP button
to enable a temperature conversion and update the temperature value for all temperature functions in degrees
Celsius (°C) and hexadecimal. Additionally, these functions can be modified by adjusting the corresponding
Hysteresis and nFactor values.
Figure 3-8. GPIO + Temp Subpage
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3.2.2.2 Low Level Configuration Page
Figure 3-9 shows the Low Level Configuration page. This page allows access to low-level communication
directly with the respective device registers. Select a register on the Register Map list to show a description of
the values in that register, as well as information on the register address, default value, size, and current value.
Data are written to the registers by entering a value in the value column of the GUI.
Figure 3-9. Low Level Configuration Page
To store the values of the register map locally, select Save Configuration under the File drop-down menu. The
stored configuration files can be recalled and loaded by selecting Open Configuration.
Figure 3-10 shows the four configuration buttons provided on the Low Level Configuration page that allow the
user to read from and write to the device registers:
•Write Selected
•Write Modified
•Read Selected
•Read All
Figure 3-10. Low Level Configuration Page Options
By default, Immediate Update Mode is selected for the Low Level Configuration page write operations. The
Write Modified button is enabled only when the Update Mode is set to Deferred. In this mode, a write operation
is initiated only when the Write Selected or Write Modified buttons are pressed.
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4 Schematic, PCB Layout, and Bill of Materials
This section contains the schematics, printed circuit board (PCB) layout diagrams, and a complete bill of
materials for the AFE11612EVM. Optional components are shown as do not populate (DNP) on the schematic,
and have quantities of zero in the BOM.
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4.1 Schematics
U_DC181E1_AMC7908EVM_PG2_Hardware
DC236_AFE11612EVM_PG2_Hardware.SchDoc
SCLK
PICO
CS
POCI
GPIO2
GPIO3
SDA
SCL
USB_5V
FTDI Input Circuit
DC236_AFE11612EVM_PG1.SchDoc
1
2
3
J11
VCC
SDO/A1
VDD
VIO
J4
GND
GND
VDDVIO
J3
VIO
J2
VDD
GND
TP1
GND
TP2
GND
TP3
GND
TP4
GND
TP5
VIO
TP6
VDD
TP7
VCC
GND GND GND GND
VDDVIO VCC
VIO
1 2
3 4
J6
USB PWR SEL
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15
17
19
21
23
25
27
29
31
16
18
20
22
24
26
28
30
32
J13
ADC INPUTS
AFE11612
RESET
1DAV
2CNVT
3
SDI/SDA
4SCLK/SCL
5
DGND
6
IOVDD
7
DVDD
8
CS/A0
9SDO/A1
10 A2
11 SPI/I2C
12
GPIO-0
13
GPIO-1
14
GPIO-2
15
GPIO-3
16
DAC-CLR-0
17
DAC5-OUT 18
DAC4-OUT 19
DAC3-OUT 20
AGND4
21
AGND3
22
AVCC2
23
DAC2-OUT 24
DAC1-OUT 25
DAC0-OUT 26
D2-/GPIO-6
27 D2+/GPIO-7
28 D1-/GPIO-4
29 D1+/GPIO-5
30
ADC-REF-IN/CMP 31
ADC-GND
32
CH0 33
CH1 34
CH2 35
CH3 36
CH4 37
CH5 38
CH6 39
CH7 40
CH8 41
CH9 42
CH10 43
CH11 44
CH12 45
CH13 46
CH14 47
CH15 48
AVDD1
49 AVDD2
50
DAC6-OUT 51
DAC7-OUT 52
DAC8-OUT 53
AGND1
54
AGND2
55
AVCC1
56
REF-OUT 57
REF-DAC 58
DAC9-OUT 59
DAC10-OUT 60
DAC11-OUT 61
ALARM
62
DAC-CLR-1
63
DGND2
64
PAD
65
U1
VCC VDD
63V
10uF
C6
63V
10uF
C7
GND GND
VCC
J1
VCC
VIO
63V
10uF
C8
GND
VDD
GND
300 R14
300 R15
300 R16
300 R17
300 R18
300 R19
300 R20
300 R21
300 R22
300 R23
300 R24
300 R25
300 R26
300 R27
300 R28
300 R29
R33
DNP R35 DNP
R34
DNP R36 DNP R47 DNP
R46
DNP
R45
DNP
R44
DNP
R43
DNP
R37
DNP R38 DNP R39 DNP R40 DNP R41 DNP R42 DNP R48 DNP
GND
10.0k
R1
1 2
3 4
5 6
7 8
9 10
11 12
J9
DIGITAL COMM
1 2
3 4
5 6
7 8
9 10
11 12
J17
DIGITAL IO
1 2
3 4
5 6
7 8
J19
GPIO/TEMP
GND
USB_3.3V
0R2
0R3
0R4
0R5
0R6
0R7
0R8
0R9
0R10
0R11
0R12
0R13
A2
SPI/I2C
GPIO-0
GPIO-1
GPIO-2
GPIO-3
D2-/GPIO-6
D2+/GPIO-7
D1-/GPIO-4
D1+/GPIO-5
3
1
2
Q2
MMBT3904T-7-F
3
1
2
Q1
MMBT3904T-7-F
GND
VIO
GND
CS/A0
SCLK/SCL
SDI/SDA
1
2
3
J10
GND
1
2
3
J12
SDI/SDA
SCLK/SCL
SDO/A1
CS/A0
SPI/I2C VIO
VDD
VCC
GNDGND
VCC
GNDGND
VDD
Place near U1 Place near banana jacks
1
2
3
J14
1
2
3
J15
RESET
ALARM
1 2
3 4
5 6
J16
I2C ADDR SEL
VIO
A1
A2
A0
A1
10.0k
R32 10.0k
R31 10.0k
R30
GND
GND
GND
VIO
GND
GND
GND
CNVT DAC-CLR-1 DAC-CLR-0
10.0k
R58
VIO
10.0k
R59
VIO
10.0k
R57
VIO
10.0k
R56
VIO
CNVT
DAV
DAC-CLR-1
DAC-CLR-0
50V
10nF
C13
50V
10nF
C14
50V
10nF
C27
50V
10nF
C28
50V
10nF
C29
50V
10nF
C30
50V
10nF
C31
50V
10nF
C32
50V
10nF
C33
50V
10nF
C34
50V
10nF
C35
50V
10nF
C36
50V
10nF
C37
50V
10nF
C38
50V
10nF
C39
50V
10nF
C40
50V
10nF
C41
50V
10nF
C42
1 2
J5
VDD = VCC
C15
DNP
C16
DNP
C17
DNP
C18
DNP
C19
DNP
C20
DNP
C21
DNP
C22
DNP
C23
DNP
C24
DNP
C25
DNP
C26
DNP
1 2
3 4
5 6
7 8
9 10
11 12
J21
DAC0-5
1 2
3 4
5 6
7 8
9 10
11 12
J7
DAC6-11
1 2
3 4
J8
REF
GND
REF-DAC
REF-OUT DAC0
DAC1
DAC2
DAC3
DAC4
DAC5
DAC6
DAC7
DAC8
DAC9
DAC10
DAC11
330pF
C44
330pF
C43
3.3k
R51
3.3k
R52
VIO
0
R60
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
CH9
CH10
CH11
CH12
CH13
CH14
CH15
RESET
ALARM
A0
A2
1 2
3 4
5 6
7 8
J18
GPIO
10.0k
R61
10.0k
R62
10.0k
R63
10.0k
R64
10.0k
R65 DNP 10.0k R66 DNP 10.0k R67 DNP 10.0k R68 DNP
D2-/GPIO-6 D2+/GPIO-7 D1-/GPIO-4 D1+/GPIO-5GPIO-0
GPIO-1 GPIO-2 GPIO-3
VIO VIO VIO VIO
VIO VIO VIO VIO
TP11
REF-OUT
TP10
ADC_CMP
DAC-CLR-0
CNVT
DAV
DAC-CLR-1
RESET
ALARM
RESET ALARM
4.7µF
C12
50V
10nF
C1
50V
10nF
C2
50V
10nF
C3
50V
10nF
C4
50V
10nF
C5
Figure 4-1. AFE11612EVM Schematic Page 1
Schematic, PCB Layout, and Bill of Materials www.ti.com
20 AFE11612EVM User's Guide SLAU892 – MARCH 2023
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