INA296B5QDRQ1

Overview

The INA296B5QDRQ1 is a bidirectional current sense amplifier from Texas Instruments, designed for high-precision measurements in automotive and industrial environments. It operates with a common-mode voltage range of -5 V to 110 V and supports a supply voltage between 2.7 V and 20 V. The device features a fixed gain of 200 V/V, a bandwidth of 1.1 MHz, and a typical CMRR of 166 dB. Key electrical specifications include an input offset voltage of 25 µV, an input bias current of 45 µA, and a maximum gain error of 0.1%. It consumes 2.5 mA of supply current and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Supports bidirectional current sensing across a wide common-mode voltage range of -5 V to 110 V
• Delivers ultra-high precision with a typical CMRR of 166 dB and low input offset voltage
• Provides fast transient response with a 1.1 MHz bandwidth and rapid settling time
• Complies with AEC-Q100 standards for automotive reliability

Applications

• Automotive battery management systems
• High-side or low-side current monitoring in electric vehicles
• Industrial motor control and protection circuits
• Overcurrent detection in high-voltage DC power distribution

Procurement Notes

Verify the specific suffix QDRQ1 confirms AEC-Q100 automotive qualification and SOIC-8 packaging. Ensure the B5 variant matches the required 200 V/V gain for your design. Confirm moisture sensitivity levels and reflow soldering profiles align with your assembly process requirements before finalizing procurement.

Selection Notes

Select this component when high accuracy and wide common-mode voltage are critical. The 200 V/V gain suits applications with small shunt resistors or low signal swings. Consider the SOIC-8 package for standard PCB layouts. Verify that the 1.1 MHz bandwidth meets your system's noise filtering needs without requiring additional external components.

Part Context

This part belongs to the INA296x family of ultra-precise, bidirectional current-sense amplifiers. The 'Q' indicates automotive grade compliance, while 'B5' specifies the 200 V/V gain option. It complements other variants like INA296A5 (higher precision) and INA296B4 (100 V/V gain) within the same functional series.

Replacement Considerations

Direct substitutes include INA296B5IDGKR (VSSOP-8 package) or INA296B5QDGKRQ1 (automotive VSSOP-8). For pin-compatible alternatives with different gains, consider INA296B4QDRQ1 (100 V/V) or INA296B3QDRQ1 (50 V/V), ensuring gain adjustments are accounted for in the circuit design.