INA296A5QDDFRQ1

Overview

The INA296A5QDDFRQ1 is an ultra-precise, bidirectional current sense amplifier from Texas Instruments. It features a fixed gain of 200V/V and operates with a common-mode voltage range from -5V to 110V. The device supports a supply voltage between 2.7V and 20V. Key electrical specifications include a small signal bandwidth of 1.1MHz, a slew rate of 8V/µs, and a maximum gain error of ±0.01%. It exhibits a typical CMRR of 166dB and an input offset voltage of ±2µV. The component is AEC-Q100 qualified for Grade 1 automotive applications.

Feature Summary

• Ultra-precise zero-drift topology ensures high accuracy with minimal offset voltage drift across the operating temperature range.
• Wide common-mode voltage capability allows operation from -5V to 110V, independent of the power supply voltage.
• High-speed performance with 1.1MHz bandwidth and fast settling time enables rapid detection of transient overcurrent events.

Applications

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

Procurement Notes

Verify the specific suffix 'DDFRQ1' corresponds to the SOT-23-8 package and tape-and-reel quantity. Confirm that the 'Q1' designation aligns with the required AEC-Q100 Grade 1 qualification for your automotive environment. Ensure the 200V/V gain matches your system's dynamic range requirements before finalizing the order.

Selection Notes

Select this part when high precision and wide common-mode voltage are critical. The 200V/V gain is suitable for detecting very small shunt voltages. Consider the 1.1MHz bandwidth if fast transient response is needed. Verify that the SOT-23-8 package fits your PCB layout constraints and thermal requirements compared to other available packages.

Part Context

This component belongs to the INA296x-Q1 family of ultra-precise current sense amplifiers. It shares architectural similarities with other members like the INA296A4QDDFRQ1 but differs in its fixed internal gain. The family is designed for automotive applications requiring high-side, low-side, or inline sensing capabilities with robust common-mode rejection.

Replacement Considerations

INA296A4QDDFRQ1 offers similar precision but with a 100V/V gain. INA296B5QDDFRQ1 provides the same 200V/V gain but with lower precision specifications. Ensure functional safety documentation requirements are met if replacing in a safety-critical design.

FAQ

Does the common-mode voltage range depend on the supply voltage?

No, the INA296A5QDDFRQ1 supports a common-mode range from -5V to 110V regardless of the supply voltage, which ranges from 2.7V to 20V.

What is the maximum gain error for the INA296A5QDDFRQ1?

The maximum gain error is ±0.01% at room temperature, with a drift of ±1ppm/°C over the specified temperature range.