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INA241A Datasheet Ultra-Precise Current Sense Amplifier

Manufacturer: Texas Instruments

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General Description

The INA241x is an ultra-precise, bidirectional current sense amplifier than can measure voltage drops across shunt resistors over a wide common-mode range from –5 V to 110 V, independent of the supply voltage.

The high-precision current measurement is achieved through a combination of low offset voltage (±10 µV, maximum), small gain error (±0.01%, maximum) and a high DC CMRR (typical 166 dB).

The INA241x is designed for high voltage, bidirectional measurements in switching systems that see large common-mode voltage transients at the device's inputs.

Overview

INA241A, INA241B SBOSA30B – MARCH 2022 – REVISED JULY 2023 INA241x –5 V to 110 V, Bidirectional, Ultra-Precise Current Sense Amplifier With Enhanced PWM Rejection.

Key Features

  • Enhanced PWM rejection optimized for systems subject to switching common-mode voltages.
  • Supports switching frequencies up to 125 kHz.
  • Wide common-mode voltage:.
  • Operational voltage:.
  • 5 V to +110 V.
  • Survival voltage:.
  • 20 V to +120 V.
  • Bidirectional operation.
  • High small signal bandwidth: 1.1 MHz (at all gains).
  • Slew rate: 8 V/µs.
  • Step response settling time to 1%: 1 µs.
  • Excellent CMRR.

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