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INA232AIDDFR

TIINA232AIDDFR

Texas Instruments
Current & Power Monitors & Regulators 48-V 16-bit high-pr ecision I C output d
23,689 in stock
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Overview

The INA232AIDDFR is a high-accuracy, 16-bit current and power monitor that operates over a wide common-mode range of -0.3V to 48V. It measures shunt voltage, bus voltage, and calculated power while providing an I2C-compatible interface with programmable alert limits. Its low input bias current and small TSOT-23-8 package make it ideal for power-sensitive and space-constrained designs.

Why Choose This Part

The device features a maximum gain error of 0.3 percent and a low 50-microvolt offset, ensuring high precision across its full sensing range. Its 16-bit ADC allows for granular power measurements, while the configurable averaging and alert pins reduce the processing load on the host microcontroller.

Applications

Battery Management Systems
Accurately monitors charge and discharge rates in multi-cell battery packs to ensure safety and longevity.
Telecom Infrastructure
Provides high-side monitoring for 48V power rails with precise current and voltage reporting.
Industrial Motor Control
Monitors motor current consumption and triggers alerts for overcurrent or stall conditions.
Energy Metering
Used in smart plugs and power distribution units to track energy usage with 16-bit precision.

Key Specifications

Accuracy +/-0.3%
Function Current Monitor
Mounting Type Surface Mount
Package / Case SOT-23-8 Thin, TSOT-23-8
Sensing Method High/Low-Side
Voltage - Input 1.7V ~ 5.5V
Operating Temperature -40degC ~ 125degC (TA)
Supplier Device Package TSOT-23-8

Getting Started

Engineers can evaluate this part using the INA232EVM evaluation module. Firmware development is straightforward using the I2C interface, where four pin-selectable addresses allow multiple devices on the same bus. Ensure the shunt resistor value is chosen based on the programmable 20mV or 80mV full-scale range to maximize dynamic range.

Also Consider

INA219AIDCNR TITexas Instruments - A common alternative for lower precision requirements with a similar 26V common-mode range.
INA226AIDGSR TITexas Instruments - Offers higher precision and a 36V common-mode range in a slightly larger 10-pin VSSOP package.
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