Texas Instruments INA228EVM User manual

1
SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
User's Guide
SBOU241A–April 2020–Revised June 2020
INA228, INA229, INA237, INA238, and INA239 EVM User’s
Guide
This user’s guide describes the characteristics, operation, and use of the INA228, INA229, INA237,
INA238, and INA239 evaluation modules (EVMs). These EVMs are designed to evaluate the performance
of the INA228, INA229, INA237, INA238, and INA239. Throughout this document, the terms evaluation
board, evaluation module, and EVM are synonymous with the INA228EVM, INA229EVM, INA237EVM,
INA238EVM, and INA239EVM. This document includes a schematic, reference printed-circuit board (PCB)
layouts, and a complete bill of materials (BOM).
Trademarks
All trademarks are the property of their respective owners.

WARNING
General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines www.ti.com
2SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback
Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
1 General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
Always follow TI’s setup and application instructions, including use of all interface components within their
recommended electrical rated voltage and power limits. Always use electrical safety precautions to help
ensure your personal safety and those working around you. Contact TI's Product Information Center
http://support/ti./com for further information.
Save all warnings and instructions for future reference.
WARNING
Failure to follow warnings and instructions may result in personal injury,
property damage or death due to electrical shock and burn hazards.
The term TI HV EVM refers to an electronic device typically provided as an open framed, unenclosed
printed circuit board assembly. It is intended strictly for use in development laboratory environments,
solely for qualified professional users having training, expertise and knowledge of electrical safety risks in
development and application of high voltage electrical circuits. Any other use and/or application are strictly
prohibited by Texas Instruments. If you are not suitable qualified, you should immediately stop from further
use of the HV EVM.
1. Work Area Safety
a. Keep work area clean and orderly.
b. Qualified observer(s) must be present anytime circuits are energized.
c. Effective barriers and signage must be present in the area where the TI HV EVM and its interface
electronics are energized, indicating operation of accessible high voltages may be present, for the
purpose of protecting inadvertent access.
d. All interface circuits, power supplies, evaluation modules, instruments, meters, scopes and other
related apparatus used in a development environment exceeding 50Vrms/75VDC must be
electrically located within a protected Emergency Power Off EPO protected power strip.
e. Use stable and nonconductive work surface.
f. Use adequately insulated clamps and wires to attach measurement probes and instruments. No
freehand testing whenever possible.
2. Electrical Safety
As a precautionary measure, it is always a good engineering practice to assume that the entire EVM
may have fully accessible and active high voltages.
a. De-energize the TI HV EVM and all its inputs, outputs and electrical loads before performing any
electrical or other diagnostic measurements. Revalidate that TI HV EVM power has been safely
de-energized.
b. With the EVM confirmed de-energized, proceed with required electrical circuit configurations,
wiring, measurement equipment connection, and other application needs, while still assuming the
EVM circuit and measuring instruments are electrically live.
c. After EVM readiness is complete, energize the EVM as intended.
WARNING
While the EVM is energized, never touch the EVM or its electrical
circuits, as they could be at high voltages capable of causing electrical
shock hazard.

www.ti.com General Texas Instruments High Voltage Evaluation (TI HV EVM) User Safety Guidelines
3
SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
3. Personal Safety
a. Wear personal protective equipment (for example, latex gloves or safety glasses with side shields)
or protect EVM in an adequate lucent plastic box with interlocks to protect from accidental touch.
Limitation for safe use:
EVMs are not to be used as all or part of a production unit.

Overview www.ti.com
4SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback
Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
2 Overview
The INA228, INA229, INA237, INA238, and INA239 devices are digital power monitors with integrated 20-
bit (INA229 and INA228) and 16-bit (INA237, INA238, and INA239) delta-sigma ADCs specifically
designed for current-sensing applications. The devices can measure a full-scale differential input of
±163.84 mV across the shunt with common-mode voltage support from –0.3 V to +85 V. For the INA228
and INA229, built-in digital accumulation calculates average power, internal die temperature, energy, and
charge accumulation. For the INA237, INA238, and INA239, built-in digital accumulation calculates
average power and internal die temperature. All devices also have built in diagnostics to indicate system
health accessible through a digital output pin, ALERT. The devices operate from a single supply of 2.7 V
to 5.5 V, drawing < 1-mA current during operation and with < 10-µA current during shutdown. The output
can be interfaced with a multitude of microcontrollers (MCUs) with a standard 4-wire SPI interface
(INA229 and INA239) or with a standard I2C interface (INA228, INA237, and INA238).
Table 1. INA228, INA229, INA237, INA238, and INA239 Device Summary
PRODUCT DIGITAL PROTOCOL ADC RESOLUTION MAX GAIN ERROR MAX OFFSET VOLTAGE
INA228 I2C 20-bit 0.1% ±2 µV
INA229 SPI 20-bit 0.1% ±2 µV
INA237 I2C 16-bit 0.25% ±50 µV
INA238 I2C 16-bit 0.25% ±10 µV
INA239 SPI 16-bit 0.25% ±10 µV
2.1 Kit Contents
Table 2 lists the contents of the EVM kit. Contact the nearest Texas Instruments Product Information
Center if any component is missing.
Table 2. Kit Contents
Item Quantity
INA228EVM, INA229EVM, INA237EVM,
INA238EVM, OR INA239EVM test board 1
USB cable 1
2.2 Related Documentation From Texas Instruments
This user's guide is available from the TI website under literature number SBOU241. 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 www.ti.com or the Texas Instruments' Literature
Response Center at [phone] or the Product Information Center at [phone]. When ordering,
identify the document by both title and literature number. Table 3 lists documentation related to the EVM.
Click the links in Table 3 for further information. The device name links to the product web folder on
www.ti.com. The literature number links to the document PDF.
Table 3. Related Documentation
Document Title Document Literature Number
INA228-Q1 data sheet SLYS022
INA229-Q1 data sheet SLYS024
INA237-Q1 data sheet SBOSA27
INA238-Q1 data sheet SLYS026
INA239-Q1 data sheet SLYS028

www.ti.com Hardware
5
SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
3 Hardware
The EVM is an easy-to-use platform for evaluating the main features and performance of the INA228,
INA229, INA237, INA238, or INA239. The EVM supports current measurements up to 10 amps, and
includes a graphical user interface (GUI) used to read and write device registers.
The EVM is intended to provide basic functional evaluation of the devices. The layout is not intended to be
a model for the target circuit, nor is it laid out for electromagnetic compatibility (EMC) testing. The EVM
consists of 2 PCBs. The smaller PCB is referred to as the EVM, and has either the INA228, INA229,
INA237, INA238, or INA239 installed. The larger PCB is referred to as the PAMB Controller, and is used
to interface the EVM with the GUI.
3.1 Features
• GUI support to read and write device registers
• Detachable EVM for custom use cases
• Conveniently powered from a common micro-USB connector
4 Operation
4.1 Quick Start Setup
The following instructions describe how to set up and use the EVM.
Step 1. Download and install this driver: http://www.ti.com/lit/zip/sbac253
Step 2. Attach the EVM to the PAMB Controller as shown in Figure 1.
Step 3. Set the switches to EVM mode:
1. For the INA229 and INA239: Make sure that SW1 is set to CS3.
2. For the INA228, INA237, and INA238: Make sure that both SW0 and SW1 are set to
GND.
Step 4. Connect the EVM to a PC using a USB cable.
1. Insert the micro USB cable into the PAMB Controller onboard USB receptacle J2.
2. Plug the other end of the USB cable into a PC.
Step 5. Access the GUI from one of these links in either Chrome or Firefox:
1. INA228EVM: https://dev.ti.com/gallery/info/4910879/INA228EVM_GUI/ver/1.0.0/
2. INA229EVM: https://dev.ti.com/gallery/info/4910879/INA229EVM_GUI/ver/1.0.0/
3. INA237EVM and INA238EVM:
https://dev.ti.com/gallery/info/4910879/INA237_238EVM_GUI/ver/1.0.0/
4. INA239EVM: https://dev.ti.com/gallery/info/4910879/INA239EVM_GUI/ver/1.0.0/
Step 6. Connect the GND reference of the external system to the GND node of the EVM (pin 1 of J1).
Step 7. Provide a differential input voltage signal to the Vin+ and Vin– nodes by connecting the signal
leads to J1 pin 5 or 6 and J1 pin 3 or 4 on the EVM as explained in Section 4.2.2.

Operation www.ti.com
6SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback
Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
4.2 EVM Operation
To use the EVM with the included PAMB Controller, connect the EVM as shown in Figure 1.Make sure to
set SW0 and SW1 as instructed in Section 4.1,Step 3.
Figure 1. EVM on PAMB Controller
4.2.1 Setup
4.2.1.1 Driver Installation
Download and install this driver: http://www.ti.com/lit/zip/sbac253. This is a one-time step per computer.
Unzip the folder and run the .exe file with administrator privileges.
4.2.1.2 Firmware
The firmware comes preinstalled on the PAMB Controller. Firmware updates will be pushed through the
GUI (requires previous driver to be installed). Downloaded offline GUIs may check for GUI/Firmware
updates depending on the version.

www.ti.com Operation
7
SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
4.2.1.2.1 Firmware Debug
If the firmware gets corrupted or must be manually reinstalled for any reason, follow these steps to
reinstall the firmware.
1. Configure the MCU on the PAMB Controller to be in Device Firmware Update (DFU) Mode.
a. It is possible that the MCU has already entered DFU mode. If so, the GUI will notify you and try to
update the firmware to the latest version after the GUI is connected to the PC.
b. DFU mode can be entered manually through one of the following methods while the PAMB
Controller is powered on:
• Through software:
– Send the command 'bsl' on the PAMB's USB Serial (COM) port.
• Though hardware (with the EVM removed):
– Short the two test points near PK1 and PK2 of the header pins (shown in Figure 2) with a
pair of tweezers (or wire) while pressing the RESET button.
Figure 2. Test Points Used to Enter DFU Mode Manually
2. With the MCU in DFU mode, the firmware can now be uploaded through one of the following methods:
• Through the GUI:
– Plug in the PAMB Controller to a PC via the USB port and launch the GUI. DFU mode should
be automatically detected, and the firmware will be uploaded automatically.
• Through the USB Bootstrap Loader (BSL) scripter tool and batch file:
– Download the firmware package and BSL scripter tool from the EVM page, or use the following
links:
• INA228EVM: http://www.ti.com/lit/zip/sboc600
• INA229EVM: http://www.ti.com/lit/zip/slyc150
• INA237EVM and INA238EVM: http://www.ti.com/lit/zip/sboc601
• INA239EVM: http://www.ti.com/lit/zip/slyc151
– Unzip the firmware folder and run the .bat file.
4.2.1.3 GUI Setup and Usage
The GUI can be accessed from these links in either Chrome or Firefox:
• INA228EVM: https://dev.ti.com/gallery/info/4910879/INA228EVM_GUI/ver/1.0.0/
• INA229EVM: https://dev.ti.com/gallery/info/4910879/INA229EVM_GUI/ver/1.0.0/
• INA237EVM and INA238EVM: https://dev.ti.com/gallery/info/4910879/INA237_238EVM_GUI/ver/1.0.0/
• INA239EVM: https://dev.ti.com/gallery/info/4910879/INA239EVM_GUI/ver/1.0.0/

Operation www.ti.com
8SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback
Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
4.2.1.3.1 Initial Setup
To set up the GUI the first time, use the following instructions:
1. Make sure that the previously mentioned driver was installed successfully to ensure that everything
works properly and that the GUI can update the EVM firmware, if necessary.
2. With the EVM/PAMB Controller unit plugged into the PC, go to the previously-provided GUI link.
3. On the EVM, make sure to set the switches to EVM mode:
1. For the INA229 and INA239: Make sure that SW1 is set to CS3.
2. For the INA228, INA237, and INA238: Make sure that both SW0 and SW1 are set to GND.
4. To launch the GUI from the web browser, click the GUI Composer application to open the GUI
Composer window shown in Figure 3.
Figure 3. GUI Composer Application Window
a. For first-time GUI Composer setup, follow the prompts to download the TI Cloud Agent and
browser extension shown in Figure 4. These prompts will appear after you close the README.md
dialog.
Figure 4. TI Cloud Agent

www.ti.com Operation
9
SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
5. Optionally, the GUI can be downloaded for offline use by clicking the icon in the GUI Composer
window shown in Figure 3.
4.2.1.3.2 GUI Operation
To operate the GUI, follow these steps:
1. Connect to and launch the GUI as described in Section 4.2.1.3.1.
2. With the EVM connected to the GUI, close the README.md file page and search for the Hardware
Connected text near the bottom-left hand corner of the GUI as in Figure 5.
Figure 5. Hardware Connected
a. If Hardware Connected does not show in the bottom-left hand corner of the GUI, check different
hardware COM ports under Options >> Serial Port, as shown in Figure 6.
Figure 6. Change Serial Port
b. If the hardware still does not connect, make sure you are using the correct GUI/EVM combination.
3. Click the Registers icon shown in Figure 7.
Figure 7. Registers Page Icon
4. You can now interact with the EVM from the Register page. For questions about a register or register
bit field, select the icon. For more questions about registers, check the data sheet.

Operation www.ti.com
10 SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback
Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
4.2.2 Current Sensing Operation
The EVM allows the user to either emulate the voltage developed across a sense resistor based on a
given set of system conditions by applying a differential voltage across the IN+ and IN– terminals directly,
or to connect the device inputs to an external shunt. Optionally, a surface-mount technology (SMT) shunt
resistor can be soldered across the pads of R1, and these inputs can be connected in series with the
external system and load current. There are 2 terminals each for IN+ (J1 pins 5 and 6) and IN– (J1 pins 3
and 4) for convenience.
To configure a measurement evaluation without a shunt resistor, follow these steps:
1. Connect a differential voltage across the IN+ and IN– terminals as shown in Figure 8.
a. If the differential voltage supply is a floating supply, connect a –0.3-V to 85-V common-mode
voltage (leave powered off until finished setting up) to the inputs by connecting the positive lead of
the external voltage source to either the IN+ or IN– terminal. This action effectively raises the
absolute common-mode voltage of the input pins. Make sure that the differential voltage plus or
minus the common-mode voltage does not go out of the –0.3-V to 85-V range.
Figure 8. IN+ and IN– Wiring Without a Shunt Resistor
2. Connect the VBUS terminal (J1 pin 2) to the desired bus voltage (likely either IN+ or IN–).
3. Connect the source ground to the GND terminal (J1 pin 1).
4. Power on the system, and observe the device states and outputs through the GUI.
To configure a measurement evaluation with a shunt resistor, follow these steps:
1. Connect a shunt resister by doing either of the following:
a. Solder a 2512 resistor across the pads of R1 that connects the IN+ and IN– inputs.
b. Connect an external shunt across the IN+ and IN– terminals of J1, preferably across pins 4 and 5,
as shown in Figure 9.
i. If an external shunt is being used, make the connections such that the sensing location is
across the shunt and there will be no high current on the sensing path. See the TI Precision
Labs - Current Sense Amplifiers: Shunt Resistor Layout video for more information.
2. Connect the IN+ and IN– terminals in series with the load while powered off.

www.ti.com Operation
11
SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
Figure 9. IN+ and IN– Wiring With a Shunt Resistor
WARNING
If measuring current, first make sure that the equipment (shunt
resistor, wires, connectors, and so on) can support the amperage
and power dissipation. Secondly, make sure that the current
flowing through J1 does not exceed 10 A. Failure to do so can
result in damage to the EVM, or personal injury.
Do not touch high voltage terminals.
The EVM may get hot.
3. Connect the VBUS terminal (J1 pin 2) to the desired bus voltage (likely either IN+ or IN–).
4. Connect the system ground to the GND terminal (J1 pin 1).
5. Power on the system, and observe the device states and outputs through the GUI.

Operation www.ti.com
12 SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback
Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
4.2.3 Direct EVM Serial Communication
If desired, the EVM can be communicated with directly without the use of the GUI through the USB serial
(COM) port. Simply send the desired command string over the serial port and receive the results. This is
useful for interfacing the EVM with custom setups, scripts, or GUIs. To read and write registers, use the
following format:
• Read register format: rreg ADR
– Where ADR is the address in hex, and rreg is always lower case
– Register addresses can be in upper or lower case, and do not need to be led by '0x'. 0 padding
register addresses is also optional. For example, to read register address 0xB, some valid
commands include:
• rreg b
• rreg 0B
• rreg 0x0B
• When '0x' is used, the 'x' must be lower case.
– For the previous example, the EVM would return the results in JSON format
{"acknowledge":"rreg 0x0B"}
{"register":{"address":11,:"value":3}}
{"evm_state":"idle"}
• Write register format: wreg ADR VAL
– where ADR and VAL are in hex, and wreg is always lower case
– Register addresses and values can be in upper or lower case, and do not need to be led by '0x'. 0
padding register addresses and values is also optional. For example, to write register address 0x1
with the value 0xfb69, some valid commands include:
• wreg 1 fb69
• wreg 01 0xfb69
• wreg 0x01 0xFB69
• When '0x' is used, the 'x' must be lower case.
– For the previous example, the EVM would return the results in JSON format:
{"acknowledge":"wreg 0x01 0xfb69"}
{"console":"Writing 0xfb69 to ADCCONFIG_2 register"}
{"evm_state":"idle"}

www.ti.com Circuitry
13
SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
5 Circuitry
This section summarizes the EVM subsystems and their components.
5.1 Current Sensing IC
This section describes the main INA device and supporting components.
U1 is the main INA current-sensing device (either the INA228, INA229, INA237, INA238, or INA239). C1
and C2 are bypass capacitors that are placed near the sensor to help mitigate power supply noise and
provide current quickly to the device when needed. LED D1 with current limiting resistor R4 are used to
indicate when the EVM is powered on.
The device pins can be monitored directly through the test points TP1 – TP11. Note that there is one extra
test point on GND for convenience.
5.2 Input Signal Path
This section describes the circuitry of the input signal path.
J1 is the main connection terminal. Pin 1 of J1 is used to tie the system ground to the EVM ground. Pin 2
of J2 is used for the VBUS measurement within the sensor. Pins 3 and 4 are tied to IN–, and Pins 5 and 6
are tied to IN+. There are two pins each for IN– and IN+ for convenience.
R1 can be used for an optional onboard shunt resistor with a 2512 footprint. Alternatively, a shunt can be
placed across the IN+ and IN– terminals of J1. If desired, a differential voltage can be applied directly for
measurement tests.
C3, R2, and R3 combine to make an optional input filter. R2 and R3 are populated with 0-Ωresistors by
default. When using input filtering, take into account the input bias current of the device.
5.3 Digital Circuitry
This section describes the digital circuitry around the device.
5.3.1 I2C (INA228, INA237, INA238)
J2 and J3 are the main header pins that connect the digital and power pins to the PAMB Controller. R5
and R6 are used as pullup resistors for the main digital IO pins.
SW0 and SW1 set the I2C address of the device. This can be useful when using the EVM with a custom
controller (other than the PAMB Controller), or when stacking the EVMs. Currently the PAMB Controller
and GUI are setup to only use 1 EVM at a time, with SW0 and SW1 both set to GND.
R8 is used as a pullup resistor for the ALERT pin, which is routed to J3. LED D2 and current limiting
resistor R7 are used to indicate when the ALERT has triggered.
5.3.2 SPI (INA229, INA239)
J2 and J3 are the main header pins that connect the digital and power pins to the PAMB Controller.
R7–R10 are 0-Ωresistors in series with the main digital IO pins. Optionally, these resistor spaces can be
used to provide inline filtering on the digital lines, or the resistors can be removed to disconnect the digital
pins from the header pins.
SW1 is used to redirect the control signal line (CS) to 1 of 4 pins on J3. This can be useful when using the
EVM with a custom controller (other than the PAMB Controller), or when stacking the EVMs. Currently the
PAMB Controller and GUI are setup to only use one EVM at a time, with SW1 set to CS3.
R6 is used as a pullup resistor for the ALERT pin, which is routed to J3. LED D2 and current limiting
resistor R5 are used to indicate when the ALERT has triggered.

Schematics, PCB Layout, and Bill of Materials www.ti.com
14 SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback
Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
6 Schematics, PCB Layout, and Bill of Materials
NOTE: Board layouts are not to scale. These figures are intended to show how the board is laid out. The figures are not intended to be used for
manufacturing EVM PCBs.
6.1 Schematics
6.1.1 SENS063 (INA228EVM, INA237EVM, INA238EVM)
Figure 10 and Figure 11 show the schematic of the EVM. Figure 10 shows the circuitry for the EVM. Figure 11 shows the mechanical components
included with the EVM.
Figure 10. SENS063 Schematic

www.ti.com Schematics, PCB Layout, and Bill of Materials
15
SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
Figure 11. SENS063 Hardware Schematic

Schematics, PCB Layout, and Bill of Materials www.ti.com
16 SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback
Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
6.1.2 SENS064 (INA229EVM, INA239EVM)
Figure 12 and Figure 13 show the schematic of the EVM. Figure 12 shows the circuitry for the EVM. Figure 13 shows the mechanical components
included with the EVM.
Figure 12. SENS064 Schematic

www.ti.com Schematics, PCB Layout, and Bill of Materials
17
SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
Figure 13. SENS064 Hardware Schematic

Schematics, PCB Layout, and Bill of Materials www.ti.com
18 SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback
Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
6.2 PCB Layout
6.2.1 SENS063 (INA228EVM, INA237EVM, INA238EVM)
Figure 14 through Figure 17 illustrate the PCB layers of the EVM.
Figure 14. SENS063 Top View Figure 15. SENS063 Top Layer
Figure 16. SENS063 Bottom View Figure 17. SENS063 Bottom Layer

www.ti.com Schematics, PCB Layout, and Bill of Materials
19
SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
6.2.2 SENS064 (INA229EVM, INA239EVM)
Figure 18 through Figure 21 illustrate the PCB layers of the EVM.
Figure 18. SENS064 Top View Figure 19. SENS064 Top Layer
Figure 20. SENS064 Bottom View Figure 21. SENS064 Bottom Layer

Schematics, PCB Layout, and Bill of Materials www.ti.com
20 SBOU241A–April 2020–Revised June 2020
Submit Documentation Feedback
Copyright © 2020, Texas Instruments Incorporated
INA228, INA229, INA237, INA238, and INA239 EVM User’s Guide
6.3 Bill of Materials
6.3.1 SENS063 (INA228EVM, INA237EVM, INA238EVM)
Table 4 through Table 7 provide the parts list for the EVM. Table 4 through Table 6 are variant specific, while Table 7 shows the parts common to
all SENS063 variants.
Table 4. INA228EVM Exclusive Bill of Materials
Designator QTY Value Description Package Reference Part Number Manufacturer
U1 1 Automotive, 85-V, High-Voltage, Zero-Drift, 20-Bit ADC, I2C, Bidirectional Shunt Current,
Bus Voltage, Power, Temperature, Energy and Charge Monitor, DGS0010A (VSSOP-10) DGS0010A INA228AQDGSRQ1 Texas Instruments
Table 5. INA237EVM Exclusive Bill of Materials
Designator QTY Value Description Package Reference Part Number Manufacturer
U1 1 Automotive, 85-V, High-Voltage, Zero-Drift, 16-Bit ADC, I2C, Bidirectional Shunt Current,
Bus Voltage, Power, and Temperature Monitor DGS0010A INA237AQDGSRQ1 Texas Instruments
Table 6. INA238EVM Exclusive Bill of Materials
Designator QTY Value Description Package Reference Part Number Manufacturer
U1 1 Automotive, 85-V, High-Voltage, Zero-Drift, 16-Bit ADC, I2C, Bidirectional Shunt
Current, Bus Voltage, Power, and Temperature Monitor DGS0010A INA238AQDGSRQ1 Texas Instruments
Table 7. SENS063 Variants Bill of Materials
Designator QTY Value Description Package Reference Part Number Manufacturer
!PCB 1 Printed Circuit Board SENS063 Any
C1 1 1uF CAP, CERM, 1 µF, 16 V,±20%, X5R, 0402 0402 CL05A105MO5NNNC Samsung Electro-Mechanics
C2 1 0.1uF CAP, CERM, 0.1 uF, 50 V, ±20%, X7R, 0402 0402 GRM155R71H104ME14D MuRata
D1, D2 2 White LED, White, SMD 0805 VAOL-S8WR4 Visual Communications
Company, LLC
H1 1 PAMB Controller DC081 Texas Instruments
H2 1 Kitting Item: 3025010-03; Cable, USB A MALE to Micro B MALE 3'; CDDS 6612041 6612041 Qualtek
J1 1 TERM BLK 6POS SIDE ENTRY 5MM PCB HDR6 691137710006 Wurth Electronics
J2, J3 2 20 Position Receptacle Connector Through Hole HDR20 SSQ-110-04-G-D Samtec
LBL1 1 Thermal Transfer Printable Labels, 0.650" W x 0.200" H - 10,000 per roll PCB Label 0.650 x 0.200
inch THT-14-423-10 Brady
R2, R3 2 0 RES, 0, 5%, 0.125 W, 0603 0603 MCT06030Z0000ZP500 Vishay/Beyschlag
R4, R7 2 10k RES, 10 k, 5%, 0.063 W, AEC-Q200 Grade 0, 0402 0402 CRCW040210K0JNED Vishay-Dale
R5, R6, R8 3 4.7k RES, 4.7 k, 5%, 0.063 W, AEC-Q200 Grade 0, 0402 0402 CRCW04024K70JNED Vishay-Dale