MAX4071ATA-T

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4071ATA+T is a bidirectional, high-side current-sense amplifier featuring an internal 1.5V reference voltage. It operates on a single supply from 2.7V to 24V with a common-mode range of 1.35V to 24V independent of the supply. The device offers selectable gains of 50V/V or 100V/V via the GSEL pin and consumes 100µA during operation, reducing to 10µA in shutdown mode. It provides a total output error of less than 1.5% at room temperature and functions within an automotive temperature range of -40°C to +125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Bidirectional high-side current sensing with integrated 1.5V reference
• Wide common-mode voltage range independent of supply voltage
• Low power consumption with dedicated shutdown capability
• Selectable gain configuration for flexible system design

Instrumentation, Op Amps, Buffer Amps Applications

• Notebook fuel gauging
• Smart-battery packs and chargers
• Cell-phone battery-current monitoring
• Motor control systems
• Power-management systems

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'ATA' corresponds to the 8-pin Thin QFN package with exposed paddle when sourcing replacements. Confirm RoHS compliance status through official manufacturer documentation. Ensure the component matches the exact part number including the '+T' designation for tape-and-reel packaging if required by assembly processes.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for portable applications requiring accurate bidirectional current monitoring where space is constrained. The fixed 1.5V reference allows for greater output swing below the reference compared to other variants. Verify that the 2.7V minimum supply voltage aligns with the system's lowest operating battery level. Consider the 100µA quiescent current impact on overall battery life in always-on circuits.

Instrumentation, Op Amps, Buffer Amps Part Context

This device belongs to the MAX4069–MAX4072 family of low-cost, bidirectional, high-side current-sense amplifiers. While sharing core topology and performance characteristics with siblings like the MAX4070 and MAX4072, the MAX4071 is distinguished by its fixed 1.5V internal reference. This variant is designed specifically for applications needing a lower reference baseline to maximize discharge current measurement resolution.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The MAX4071AUA+ serves as a direct pin-compatible alternative in the 8-pin µMAX package. Cross-reference electrical specifications carefully, particularly regarding the internal reference voltage offset and total output error limits across the full temperature range.