Kit Contents; Related Documentation From Texas Instruments - Texas Instruments INA228EVM User Manual

Overview
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
INA228
INA229
INA237
INA238
INA239
2.1

Kit Contents

Table 2 lists the contents of the EVM kit. Contact the nearest
Center if any component is missing.
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
Response Center at (800) 477-8924 or the Product Information Center at (972) 644-5580. When ordering,
identify the document by both title and literature number.
Click the links in Table 3
www.ti.com. The literature number links to the document PDF.
4
INA228, INA229, INA237, INA238, and INA239 EVM User's Guide
DIGITAL
PROTOCOL RESOLUTION
I2C
SPI
I2C
I2C
SPI
Table 2. Kit Contents
Item
INA228EVM, INA229EVM, INA237EVM,
INA238EVM, OR INA239EVM test board
USB cable
for further information. The device name links to the product web folder on
Table 3. Related Documentation
Document Title
INA228-Q1 data sheet
INA229-Q1 data sheet
INA237-Q1 data sheet
INA238-Q1 data sheet
INA239-Q1 data sheet
Copyright © 2020, Texas Instruments Incorporated
ADC MAX GAIN
ERROR
20-bit 0.1%
20-bit 0.1%
16-bit 0.25%
16-bit 0.25%
16-bit 0.25%
Texas Instruments Product Information
Quantity
1
1
www.ti.com or the Texas Instruments' Literature
Table 3 lists documentation related to the EVM.
Document Literature
Number
SLYS022
SLYS024
SBOSA27
SLYS026
SLYS028
SBOU241A – April 2020 – Revised June 2020
www.ti.com
MAX OFFSET
VOLTAGE
±2 µV
±2 µV
±50 µV
±10 µV
±10 µV
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