Texas Instruments INA234EVM User manual

User’s Guide
INA234EVM and INA236EVM
ABSTRACT
This user’s guide describes the characteristics, operation, and use of the INA234 and INA236 evaluation
modules (EVMs). These EVMs are designed to evaluate the performance of the INA234 and INA236.
Throughout this document, the terms evaluation board, evaluation module, and EVM are synonymous with
the INA234EVM and INA236EVM. This document includes a schematic, reference printed circuit board (PCB)
layouts, and a complete bill of materials (BOM).
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Table of Contents
1 Trademarks..............................................................................................................................................................................2
2 Overview..................................................................................................................................................................................3
2.1 Kit Contents........................................................................................................................................................................3
2.2 Related Documentation From Texas Instruments.............................................................................................................. 4
3 Hardware................................................................................................................................................................................. 4
3.1 Features............................................................................................................................................................................. 4
4 Operation.................................................................................................................................................................................5
4.1 Quick Start Setup............................................................................................................................................................... 5
4.2 EVM Operation...................................................................................................................................................................5
5 Circuitry................................................................................................................................................................................. 15
5.1 Current Sensing IC...........................................................................................................................................................15
5.2 Input Signal Path..............................................................................................................................................................15
5.3 Digital Circuitry................................................................................................................................................................. 15
6 Schematics, PCB Layout, and Bill of Materials................................................................................................................. 16
6.1 Schematics.......................................................................................................................................................................16
6.2 PCB Layout...................................................................................................................................................................... 18
6.3 Bill of Materials.................................................................................................................................................................19
1 Trademarks
All trademarks are the property of their respective owners.
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2 Overview
The INA234 and INA236 devices are digital power monitors with integrated 16-bit (INA236) and 12-bit (INA234)
delta-sigma ADCs specifically designed for current-sensing applications. The devices can measure a selectable
full-scale differential input of ±81.92 mV or ±20.48 mV across the shunt with common-mode voltage support
from –0.3 V to +42 V (–0.3 V to +28 V for INA234). The built-in digital accumulation calculates average power
and current if calibration register is programmed. The INA234 and INA236 devices also have built-in diagnostics
to indicate system health accessible through a digital output pin, ALERT. The output can be interfaced with a
multitude of microcontrollers (MCUs) with a standard I2C interface.
Table 2-1. Device Summary
PRODUCT
DIGITAL
PROTOCOL
ADC
RESOLUTION
MAX GAIN
ERROR
MAX OFFSET
VOLTAGE
INA234 I2C 16-bit 1% ±100 µV
INA236 I2C 12-bit 0.2% ±10 µV
2.1 Kit Contents
Table 2-2 lists the contents of the EVM kit. Contact the nearest Texas Instruments Product Information Center if
any component is missing.
Table 2-2. Kit Contents
ITEM QUANTITY
INA234EVM OR INA236EVM board 1
Sensor Control Board (SCB) 1
USB cable 1
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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 (800)
477-8924 or the Product Information Center at [phone]. When ordering, identify the document by both
title and literature number. Table 2-3 lists documentation related to the EVM. Click the links in Table 2-3 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 2-3. Related Documentation
DOCUMENT TITLE
DOCUMENT LITERATURE
NUMBER
INA234 data sheet SBOS844
INA236 data sheet SBOSA81
3 Hardware
The EVM is an easy-to-use platform for evaluating the main features and performance of the INA234 or INA236.
The EVM supports current measurements up to 10 amps, and includes a graphical user interface (GUI) used to
read and write device registers as well as view and save results data.
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 two printed circuit boards (PCBs). The larger PCB is referred to as the EVM, and has either the INA234 or
INA236 installed. The smaller PCB is referred to as the SCB Controller, and is used to interface the EVM with
the GUI.
3.1 Features
• GUI support to read and write device registers as well as view and save results data
• Detachable EVM for custom use cases
• Conveniently powered from a common micro-USB connector
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4 Operation
4.1 Quick Start Setup
The following instructions describe how to set up and use the EVM.
1. Download this driver and install it as an administrator: https://www.ti.com/lit/zip/sbac253.
2. Attach the EVM to the SCB Controller as shown in Figure 4-1.
a. Refer to Figure 4-2 when connecting multiple EVMs of the same type together.
3. Connect the EVM to a PC using the provided USB cable.
a. Insert the micro USB cable into the SCB Controller onboard USB receptacle J2.
b. Plug the other end of the USB cable into a PC.
4. Access the GUI from this link in either Chrome or Firefox: https://dev.ti.com/gallery/info/3907820/
INA234_236EVM_GUI/ver/1.0.0/.
5. Connect the GND reference of the external system to the GND node of the EVM (pin 1 of J1).
6. Provide a differential input voltage signal to the IN+ and IN– 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.
4.2 EVM Operation
To use the EVM with the included SCB Controller, connect the EVM as shown in Figure 4-1.
Figure 4-1. EVM Connected to SCB Controller
If using multiple EVMs, connect them as shown in Figure 4-2. Make sure to use a different chip address for each
device. The GUI only supports one EVM/device type at a time.
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Figure 4-2. Multiple EVMs Connected to SCB Controller
4.2.1 Setup
4.2.1.1 Driver Installation
Download and install this driver: https://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 SCB Controller. Firmware updates will be pushed through the GUI
(requires previous driver to be installed). Downloaded offline GUIs will only update the SCB Controller with the
latest firmware available at the time of download. To check for the latest GUI or Firmware updates, launch the
GUI from the web browser.
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. First, see if the GUI can program the firmware manually.
a. Plug in the SCB controller to the PC.
b. Launch the GUI.
c. It is possible that the MCU has already entered DFU mode. If so, the GUI may notify you and try to
update the firmware to the latest version.
d. If it does not update automatically, go to File > Program Device...
2. If that does not work (or if the Program Device button is grayed out), manually configure the MCU on the
SCB Controller to be in Device Firmware Update (DFU) Mode. This can be done through either of the below
methods with the SCB Controller powered on:
a. Through software:
• Send the command 'bsl' on the SCB's USB Serial (COM) port.
b. Though hardware:
• Short the two test points labeled DFU (shown in Figure 4-3) with a pair of tweezers (or wire) while
pressing the RESET button.
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Figure 4-3. Test Points Used to Enter DFU Mode Manually
With the MCU in DFU mode, the firmware can now be uploaded through the method outlined in Step 1.
4.2.1.3 GUI Setup and Usage
The GUI can be accessed from this link in either Chrome or Firefox: https://dev.ti.com/gallery/info/3907820/
INA234_236EVM_GUI/ver/1.0.0/.
4.2.1.3.1 Initial Setup
To set up the GUI the first time:
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/SCB Controller unit plugged into the PC, go to the previously-provided GUI link.
3. To launch the GUI from the web browser, click the GUI Composer application shown in Figure 4-4.
Figure 4-4. GUI Composer Application
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a. For first-time GUI Composer setup, follow the prompts to download the TI Cloud Agent and browser
extension shown in Figure 4-5. These prompts will appear after you close the README.md dialog.
Figure 4-5. TI Cloud Agent
4. Optionally, the GUI can be downloaded for offline use by clicking the icon in the GUI Composer
application (shown in Figure 4-4) and following the prompts.
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 to initiate the connection. If successful,
the Hardware Connected message should be visible near the bottom-left corner of the GUI as in Figure 4-6.
Figure 4-6. Hardware Connected
a. A green indicator with the device type and the text DEVICE CONNECTED should also be visible near
the top-left of the GUI window, as shown in Figure 4-7.
Figure 4-7. Device Connected
b. If Hardware Connected and DEVICE CONNECTED do not show in the GUI, check the different
hardware COM ports under Options >> Serial Port, as shown in Figure 4-8.
Figure 4-8. Change Serial Port
c. If the hardware still does not connect, make sure you are using the correct GUI/EVM combination.
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i. If you are using the correct GUI/EVM combination, you may need to reprogram the firmware of the
SCB, as described in Firmware Debug.
3. To view and edit the device register map, click the (registers) icon on the menu on the left.
a. From this page, you can read and write register settings on the EVM. For questions about a register or
register bit field, select the icon. For more questions about registers, check the data sheet.
4. To view and collect results data over time, go to the plots page by clicking the (plots) icon on the menu
on the left. The plots page will look similar the one shown in Figure 4-9, depending on the connected device.
Figure 4-9. GUI Plots Page
a. Below is a description of how to use the buttons and settings at the top of the plots page and next to
each plot:
i. Check the Results to collect/show box on the left to collect data from specific register values. If
a results register is unselected, then the plot below will not show the data and the EVM will not
try to read this value during the collect cycle. If you disable one of these settings while the EVM is
collecting data, then the plot will not show, but data will still be collected and the plot will update in
the background.
ii. Set the Number of EVMs drop-down menu to the number of EVMs currently in use. See Figure
4-2 to see how to attach multiple EVMs together. Use the onboard switch(es) to select a different
address for each EVM. The GUI only supports one EVM/device type at a time.
1. Set the switch settings for each connected EVM. EVM 1 will automatically populate with the
lowest addressed device unless a setting has already been selected.
2. Click the LINK TO REGMAP button to set the regmap of the desired EVM. Use this button to
change settings for each connected device through the register map. Functionally, this button
sets the default read/write address in the MCU and then reads all register values back to update
the register map. Note that if data is being collected at a high frequency, then this may cause a
minor delay in the collection data. For optimal performance, set device settings before you start
collecting data.
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iii. Click the COLLECT DATA button to start data collection.
1. In this mode, the MCU reads and sends the selected result values for each device over a USB
BULK channel. All results from one device are read before moving on to the next device. All
result values from all EVMs together are considered one "sample set".
2. The Delay between samples shows the delay between the start of each sample set. A delay
of 0 corresponds to "as fast as possible". If the delay used is shorter than the amount of time it
takes to read all results from all EVMs, the setting would be the same as a delay of 0. Note, the
registers are read when the firmware is ready to read them, optionally based on the delay timer.
It does not take into account conversion time or averaging. Although you can read and write to
other registers through the register map page while collecting data, it is possible that this adds a
delay to the data being collected.
3. Click the CLEAR ALL PLOTS button to clear the data from all plots together. This can be done
individually for each plot. Similarly, you can check the #Samples all: box to change the number
of samples shown in each plot. This can also be done individually per plot.
4. Click the SAVE PLOT button next to each plot to save the data in a spreadsheet.
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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 2512 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 two terminals each for IN+ (J1 pins 5 and 6) and IN– (J1 pins 3 and 4) for convenience.
4.2.2.1 Without Shunt Resistor
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 4-10.
a. If the differential voltage supply is a floating supply, connect a –0.3-V to 48-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 48-V range.
Figure 4-10. 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.
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4.2.2.2 With Shunt Resistor
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 4-11.
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.
Figure 4-11. 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.
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4.2.3 Direct EVM USB Communication
If desired, the EVM can be communicated with directly without the use of the GUI through the USB port. This is
done by sending the desired command string over the serial COM port and receiving the results either through
the COM port or the USB BULK channel, based on the mode. This is useful for interfacing the EVM with custom
setups, scripts, or GUIs.
4.2.3.1 Standard USB CDC Read and Write Operations
Use the serial COM port to read and write registers through USB CDC commands using 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 0x1, some valid commands include:
• rreg 1
• rreg 01
• rreg 0x01
– 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 0x01"}
{"register":{"address":1,:"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 0x5 with the value
0x4121, some valid commands include:
• wreg 5 4121
• wreg 05 0x4121
• wreg 0x05 0x4121
– 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 0x4121"}
{"console":"Writing 0x4121 to ADC_CONFIG register"}
{"evm_state":"idle"}
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4.2.3.2 Collect Data Through the USB BULK Channel
The Collect Data function can also be started and stopped through the serial COM port, however the results will
be sent over the USB BULK Channel. To do this, use the following format:
• Start collecting data format: collect timerPeriod collectFlags channelAddressIDs numDevices
– Where each parameter is the decimal representation of the value in the following format:
• timerPeriod: The delay used in the internal timer to allow data collection sample sets (in milliseconds,
unsigned 32-bit value).
• collectFlags: a byte of data that has a 1 to collect and a 0 to not collect each register value type,
according to the following definitions (note to only use energy and charge flags when the device
supports that, otherwise set to 0):
– VSHUNT = 0b1000000
– VBUS = 0b0100000
– CURRENT = 0b0001000
– POWER = 0b0000100
• channelAddressIDs
– This is the 4 LSBs of each address chained together, starting with the LSBs.
• For example If EVM 1 is on channel 0x41 and EVM 2 is on 0x43, the value here would be
0b00110001
• NumDevices is the number of EVMs chained together (1-4).
– For example, to start data collection for VSHUNT, VBUS, and CURRENT and POWER every 10 ms, for
four INA236s with EVM 1 SW0 = GND, EVM 2 SW0 = VS, EVM 3 SW0 = SDA and EVM 4 SW0 = SCL,
you would send: collect 10 108 12816 4
• For this example, the EVM would return the acknowledgment and status in JSON format:
{"acknowledge":"collect 10 108 12816 4"}
{"evm_state":"collecting"}
• Note, for the rreg and wreg functions above, the EVM will return "collecting" instead of "idle" if
collecting.
– The USB BULK channel receives data in the format: frameID deviceNumID address registerSize data
• Where each parameter is the decimal representation of the value in the following format:
– frameID (1 byte): Always reads 0. Used to ensure data is aligned.
– deviceNumID (1 byte): An ID number corresponding to the EVM number.
• From the above example, this will be 1 if reading from EVM 1, 2 from EVM 2, 3 from EVM 3, and
4 from EVM 4.
– address (1 byte): The register address that was read from the device.
– registerSize (1 byte): The number of bytes that the following data will have.
– data (1 byte at a time): The register data value, given in bytes with the most significant byte first.
• Stop collecting data format: stop
– The EVM would return the acknowledgment and status in JSON format:
{"acknowledge":"stop"}
{"evm_state":"idle"}
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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 INA234 or INA236). 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.
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 J1
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-Ω resistors 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
J2 and J3 are the main header pins that connect the digital and power pins to the SCB Controller or other EVMs.
J3 connects to the EVM/SCB on the right, while J2 connects to more EVMs on the left. R5 and R6 are used as
pullup resistors for the main digital IO pins.
SW0 sets the I2C address of the device. This can be useful when using the EVM with a custom controller (other
than the SCB Controller), or when connecting multiple EVMs together. Currently the SCB Controller and GUI are
set up to use four EVMs at a time.
R8 is used as a pullup resistor for the ALERT pin, which is routed to both J2 and J3. LED D2 and current limiting
resistor R7 are used to indicate when the ALERT has triggered.
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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
This section shows the schematics for the INA234 and INA236 EVMs. The schematics are identical except for
the IC itself.
6.1.1 SENS079 (INA234EVM, INA236EVM)
Figure 6-1 and Figure 6-2 show the schematic of the EVM. Figure 6-1 shows the circuitry for the EVM. Figure
6-2 shows the mechanical components included with the EVM.
Figure 6-1. SENS079 Schematic
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Figure 6-2. SENS079 Hardware Schematic
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6.2 PCB Layout
6.2.1 SENS079 (INA234EVM, INA236EVM)
Figure 6-3 through Figure 6-6 illustrate the PCB layers of the EVM.
Figure 6-3. SENS079 Top View Figure 6-4. SENS079 Top Layer
Figure 6-5. SENS079 Bottom View Figure 6-6. SENS079 Bottom Layer
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6.3 Bill of Materials
This section shows the bill of materials for the SENS079.
6.3.1 SENS079 (INA234EVM, INA236EVM)
Table 6-1 through Table 6-3 provide the parts list for the EVM. Table 6-1 through Table 6-2 are variant specific, while Table 6-3 shows the parts common
to both SENS079 variants.
Table 6-1. INA234EVM Exclusive Bill of Materials
Designator QTY Value Description Package Reference Part Number Manufacturer
U1 1 28-V, 12-Bit, I2C Output Current, Voltage, and Power Monitor DSBGA8 INA234AIYBJR Texas Instruments
Table 6-2. INA236VM Exclusive Bill of Materials
Designator QTY Value Description Package Reference Part Number Manufacturer
U1 1 42-V, 16-Bit, Precision I2C Output Current, Voltage, and Power Monitor DSBGA8 INA236AIYBJR Texas Instruments
Table 6-3. SENS079 Variants Bill of Materials
Designator QTY Value Description Package Reference Part Number Manufacturer
!PCB1 1 Printed Circuit Board SENS079 Any
C1 1 1uF CAP, CERM, 1 µF, 16 V,+/- 20%, X5R, 0402 0402 C1005X6S1C105K050BC TDK
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, H2, H3,
H4
4 Bumpon, Hemisphere, 0.25 X 0.075, Clear 75x250 mil SJ5382 3M
J1 1 TERM BLK 6POS SIDE ENTRY 5MM PCBASSEMBLY NOTE: Trim leads per ZZ5 HDR6 691137710006 Wurth Electronics
J2 1 Receptacle, 2mm, 6x2, Gold, R/A, TH Receptacle, 2mm, 6x2, R/A,
TH
NPPN062FJFN-RC Sullins Connector Solutions
J3 1 'Connector Header Through Hole, Right Angle 12 position 0.079" (2.00mm) HDR12 NRPN062PARN-RC Sullins Connector Solutions
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
SW0 1 Slide Switch SP4T Surface Mount, Right Angle SMT_SW_11MM3_4MM1 CUS-14TB Nidec Copal Electronics
TP2, TP3,
TP4, TP5,
TP7, TP8,
TP10, TP11,
8 Test Point, Miniature, SMT Testpoint_Keystone_Miniatur
e
5015 Keystone
C3 0 0.1uF CAP, CERM, 0.1 uF, 100 V, +/- 10%, X7S, AEC-Q200 Grade 1, 0603 0603 CGA3E3X7S2A104K080AB TDK
FID1, FID2,
FID3
0 Fiducial mark. There is nothing to buy or mount. N/A N/A N/A
R1 0 10 mOhms ±0.5% 2W Chip Resistor 2512 (6432 Metric) Automotive AEC-Q200,
Current Sense, Moisture Resistant Metal Film
2512 PCS2512DR0100ET Ohmite
www.ti.com Schematics, PCB Layout, and Bill of Materials
SBOU264 – MAY 2021
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INA234EVM and INA236EVM 19
Copyright © 2021 Texas Instruments Incorporated

STANDARD TERMS FOR EVALUATION MODULES
1. Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or
documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance
with the terms set forth herein. User's acceptance of the EVM is expressly subject to the following terms.
1.1 EVMs are intended solely for product or software developers for use in a research and development setting to facilitate feasibility
evaluation, experimentation, or scientific analysis of TI semiconductors products. EVMs have no direct function and are not
finished products. EVMs shall not be directly or indirectly assembled as a part or subassembly in any finished product. For
clarification, any software or software tools provided with the EVM (“Software”) shall not be subject to the terms and conditions
set forth herein but rather shall be subject to the applicable terms that accompany such Software
1.2 EVMs are not intended for consumer or household use. EVMs may not be sold, sublicensed, leased, rented, loaned, assigned,
or otherwise distributed for commercial purposes by Users, in whole or in part, or used in any finished product or production
system.
2Limited Warranty and Related Remedies/Disclaimers:
2.1 These terms do not apply to Software. The warranty, if any, for Software is covered in the applicable Software License
Agreement.
2.2 TI warrants that the TI EVM will conform to TI's published specifications for ninety (90) days after the date TI delivers such EVM
to User. Notwithstanding the foregoing, TI shall not be liable for a nonconforming EVM if (a) the nonconformity was caused by
neglect, misuse or mistreatment by an entity other than TI, including improper installation or testing, or for any EVMs that have
been altered or modified in any way by an entity other than TI, (b) the nonconformity resulted from User's design, specifications
or instructions for such EVMs or improper system design, or (c) User has not paid on time. Testing and other quality control
techniques are used to the extent TI deems necessary. TI does not test all parameters of each EVM.
User's claims against TI under this Section 2 are void if User fails to notify TI of any apparent defects in the EVMs within ten (10)
business days after delivery, or of any hidden defects with ten (10) business days after the defect has been detected.
2.3 TI's sole liability shall be at its option to repair or replace EVMs that fail to conform to the warranty set forth above, or credit
User's account for such EVM. TI's liability under this warranty shall be limited to EVMs that are returned during the warranty
period to the address designated by TI and that are determined by TI not to conform to such warranty. If TI elects to repair or
replace such EVM, TI shall have a reasonable time to repair such EVM or provide replacements. Repaired EVMs shall be
warranted for the remainder of the original warranty period. Replaced EVMs shall be warranted for a new full ninety (90) day
warranty period.
WARNING
Evaluation Kits are intended solely for use by technically qualified,
professional electronics experts who are familiar with the dangers
and application risks associated with handling electrical mechanical
components, systems, and subsystems.
User shall operate the Evaluation Kit within TI’s recommended
guidelines and any applicable legal or environmental requirements
as well as reasonable and customary safeguards. Failure to set up
and/or operate the Evaluation Kit within TI’s recommended
guidelines may result in personal injury or death or property
damage. Proper set up entails following TI’s instructions for
electrical ratings of interface circuits such as input, output and
electrical loads.
NOTE:
EXPOSURE TO ELECTROSTATIC DISCHARGE (ESD) MAY CAUSE DEGREDATION OR FAILURE OF THE EVALUATION
KIT; TI RECOMMENDS STORAGE OF THE EVALUATION KIT IN A PROTECTIVE ESD BAG.