INA790BIDEKR

Instrumentation, Op Amps, Buffer Amps Overview

The INA790BIDEKR is a bidirectional, ultra-precise current sense amplifier from Texas Instruments. It operates with a common-mode voltage range of -4V to 110V and supports continuous currents up to ±75A at 25°C and ±50A at +125°C. The device features an integrated shunt resistor of 400μΩ and enhanced PWM rejection capabilities. It functions on a single supply voltage between 2.7V and 5.5V, consuming a maximum supply current of 3.75mA. The component is housed in a 15-pin VSON (6x6) package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Integrates a precision shunt resistor for simplified design
• Provides enhanced rejection of pulse-width modulation noise
• Supports bidirectional current sensing within high common-mode voltage ranges

Instrumentation, Op Amps, Buffer Amps Applications

• High-side current monitoring in industrial motor drives
• Battery management systems requiring precise charge/discharge measurement
• Power supply output current sensing in server infrastructure

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix IDEKR corresponds to the 15-pin VSON package and reel packaging configuration. Confirm that the B-grade variant meets the required accuracy specifications for your application. Ensure compatibility with the -4V to 110V common-mode voltage range. Check for moisture sensitivity level requirements during storage and handling. Validate that the thermal performance supports the intended operating temperature environment.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high common-mode voltage tolerance above 100V is required alongside high precision. The integrated shunt eliminates external resistor matching issues. Consider the 15-pin VSON package for space-constrained designs. Evaluate the need for bidirectional sensing if reverse current flow must be monitored. Assess thermal dissipation needs given the integrated shunt power loss.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the INA790 family of high-precision current sense amplifiers. The family is designed for applications demanding accurate current measurement in harsh electrical environments. The integration of the shunt resistor distinguishes it from discrete solutions. It targets industrial and automotive sectors where reliability and precision are critical.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Check for direct pin-compatible alternatives within the same TI family. Verify if other models offer different gain settings or package options. Ensure substitute parts maintain the 110V common-mode voltage rating. Compare thermal characteristics and integrated shunt resistance values.