INA241A5IDR

Overview

The INA241A5IDR is a bidirectional ultra-precise current sense amplifier with a fixed gain of 200 V/V. It operates over a common-mode voltage range of -5V to 110V and supports a supply voltage from 2.7V to 20V. The device features a small-signal bandwidth of 1.1MHz, a slew rate of 8V/µs, and a step response settling time of 1µs to 1%. Key accuracy specifications include a maximum gain error of ±0.01% and an input offset voltage of ±8µV (maximum). It utilizes enhanced PWM rejection optimized for switching frequencies up to 125kHz.

Feature Summary

• Enhanced PWM rejection circuitry minimizes output signal disturbance caused by large common-mode voltage transients at the inputs.
• Ultra-precision architecture ensures high measurement accuracy through low offset voltage and minimal gain error across the operating temperature range.
• Wide common-mode voltage capability allows operation independent of the power supply voltage, supporting high-side, low-side, and inline configurations.

Applications

• Motor drives
• Solenoids and actuators
• Injection molding machines
• Cordless power tools

Procurement Notes

Verify the specific package marking and date code against the manufacturer's latest documentation to ensure authenticity. Confirm that the ordering suffix matches the required tape and reel quantity specifications. Cross-reference the part number with official distributor catalogs to validate availability and compliance with regional regulatory standards before finalizing procurement orders.

Selection Notes

Select this component when high precision is required in environments with significant switching noise. The 200 V/V gain is suitable for applications utilizing very low-value shunt resistors where maximizing the output signal amplitude is necessary. Ensure the system design accommodates the wide common-mode range and that the reference pins are configured correctly for bidirectional operation within the supply voltage limits.

Part Context

This device belongs to the INA241x family of current sense amplifiers designed for high-voltage, bidirectional measurements. The 'A' designation indicates the ultra-precise version with tighter tolerance specifications compared to the standard B variant. The '5' suffix denotes the fixed 200 V/V gain option, while 'IDR' specifies the SOIC-8 surface-mount package configuration.

Replacement Considerations

INA241B5IDR offers similar functionality with relaxed precision specifications. INA241A5IDDFR provides the same electrical performance in a smaller SOT-23-8 package. INA241A5IDGKR delivers identical characteristics in a VSSOP-8 package format.