INA296A4QDGKRQ1

Overview

The INA296A4QDGKRQ1 is a bidirectional current sense amplifier from Texas Instruments, featuring a fixed gain of 100 V/V. It operates with a common-mode voltage range of -5V to 110V and supports a supply voltage between 2.7V and 20V. The device offers a small signal bandwidth of 1.1MHz and a slew rate of 8V/µs. Key electrical characteristics include a maximum input offset voltage of ±3µV, a typical CMRR of 166dB, and a maximum gain error of ±0.01%. It is qualified under AEC-Q100 standards for Grade 1 automotive applications.

Feature Summary

• Ultra-precise zero-drift architecture ensures low offset voltage and minimal drift across the operating temperature range.
• Wide common-mode voltage capability allows operation independent of the power supply voltage.
• High-speed response with 1.1MHz bandwidth and fast settling time suitable for transient detection.
• Bidirectional sensing enables accurate measurement of both positive and negative current flows.

Applications

• DC/DC converter current monitoring
• Battery management systems (BMS)
• Fuel cell control units
• Smart junction boxes

Procurement Notes

Verify the specific ordering suffix DGK corresponds to the VSSOP-8 package configuration required for your PCB layout. Confirm that the A4 variant matches the necessary 100 V/V gain setting for your signal conditioning needs. Ensure the component meets the AEC-Q100 Grade 1 qualification requirements for your target automotive environment.

Selection Notes

Select this part when high precision is required alongside wide common-mode voltage handling. The 100 V/V gain is optimal for amplifying small shunt voltages while maintaining a wide output dynamic range. Consider the 1.1MHz bandwidth if fast overcurrent protection or transient detection is critical to the system design.

Part Context

This component belongs to the INA296x-Q1 family of ultra-precise current sense amplifiers designed for automotive use. The 'A' designation indicates the highest accuracy grade with minimal offset and drift, while the '4' specifies the 100 V/V gain option. The 'DGK' suffix identifies the specific 8-pin VSSOP package type used in compact surface-mount designs.

Replacement Considerations

INA296A4QDRQ1

FAQ

How does the INA296A4QDGKRQ1 handle bidirectional current?

It measures voltage drops across a shunt resistor in both polarities, allowing for accurate detection of current flowing in either direction relative to the reference pins.

What is the maximum common-mode voltage supported?

The device supports an operational common-mode voltage range from -5V to 110V, independent of its supply voltage.