Texas Instruments INA234EVM, Руководство пользователя

Страница: 3 / 33

2 Overview
The INA23x devices are digital power monitors with integrated 16-bit (INA232, 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 +48 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 INA23x 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
micro controllers (MCUs) with a standard I2C interface.
Table 2-1. Device Summary
PRODUCT
DIGITAL
PROTOCOL
ADC
RESOLUTION
MAX GAIN
ERROR
MAX OFFSET
VOLTAGE
INA232 I2C 16-bit 0.25% ±20 µV
INA234 I2C 12-bit 0.5% ±100 µV
INA236 I2C 16-bit 0.1% ±5 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
INA232EVM, INA234EVM OR
INA236EVM board
1
Note that this EVM requires the TI Sensor Control Board (SCB), which is sold separately.
www.ti.com Overview
SBOU264B – MAY 2021 – REVISED DECEMBER 2022
Submit Document Feedback
INA232EVM, INA234EVM and INA236EVM 3
Copyright © 2022 Texas Instruments Incorporated