INA296B1QDGKRQ1

Overview

The INA296B1QDGKRQ1 is an AEC-Q100 qualified, bidirectional current sense amplifier with a gain of 10V/V. It operates over a common-mode voltage range of -5V to 110V and supports supply voltages from 2.7V to 20V. The device features a 1.1MHz bandwidth, 8V/µs slew rate, and 1µs settling time to 1%. Electrical characteristics include a maximum input offset voltage of ±150µV, a typical CMRR of 130dB, and a maximum gain error of ±0.1%.

Feature Summary

• Bidirectional operation for high-side, low-side, and inline current sensing
• Wide common-mode voltage range independent of supply voltage
• High-speed response with 1.1MHz bandwidth and fast settling time
• Ultra-precise zero-drift architecture for low offset and drift

Applications

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

Procurement Notes

Verify the specific suffix QDGKRQ1 corresponds to the VSSOP-8 package and tape-and-reel packaging configuration. Confirm that the B-grade accuracy specifications meet the system requirements for gain error and offset voltage drift within the intended operating temperature range.

Selection Notes

Select this component when a fixed gain of 10V/V is required for wide dynamic range applications. The B-grade version offers higher gain error tolerance compared to the A-grade variant but maintains high precision suitable for automotive environments. Ensure the shunt resistor value aligns with the 10V/V gain to optimize output swing.

Part Context

This part belongs to the INA296x-Q1 family of ultra-precise current sense amplifiers designed for automotive applications. It shares the same core topology and pinout as other gain variants in the series, differing primarily in internal feedback networks that set the fixed voltage gain.

Replacement Considerations

Direct functional substitutes within the same family include INA296A1QDGKRQ1 (A-grade) or other gain variants like INA296B2QDGKRQ1 if gain adjustment is permissible. Verify package compatibility and thermal performance when substituting.