MAX9938FELT+TG7

Instrumentation, Op Amps, Buffer Amps Overview

The MAX9938FELT+TG7 is a high-side current-sense amplifier from the MAX9938 series, manufactured by Analog Devices Inc./Maxim Integrated. It features a fixed gain of 50V/V and operates with an input common-mode voltage range of 1.6V to 28V. The device offers a maximum quiescent supply current of 1μA and a maximum input offset voltage of 500μV. It is housed in a 6-pin μDFN package (2mm x 2mm) and is specified for operation over an extended temperature range of -40°C to +85°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-low quiescent supply current of 1μA maximizes battery life in portable devices
• High precision accuracy with low input offset voltage and minimal gain error
• Wide input common-mode voltage range supports monitoring from 1.6V to 28V
• Tiny footprint available in UCSP, SOT23, and μDFN packages

Instrumentation, Op Amps, Buffer Amps Applications

• Cell Phones
• PDAs
• Power Management Systems
• Portable/Battery-Powered Systems
• Notebook Computers

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'G7' against official manufacturer documentation to confirm tape-and-reel specifications or die coating details. Confirm RoHS compliance status through the datasheet. Ensure the ordering part number matches the required gain version and package type for your design.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when a 50V/V gain is required for high-side current sensing. The wide common-mode range allows direct connection to batteries as low as 1.6V. Consider the small μDFN package for space-constrained PCB layouts in portable electronics requiring precise current monitoring.

Instrumentation, Op Amps, Buffer Amps Part Context

The MAX9938 series includes four gain versions: 25V/V, 50V/V, 100V/V, and 200V/V. The 'F' designation indicates the 50V/V gain variant. The '+T' suffix typically denotes a lead-free/RoHS-compliant tape-and-reel packaging format. The device is designed for unidirectional current measurement in battery-operated systems.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Other gain variants within the MAX9938 family (MAX9938TELT+, MAX9938HELT+, MAX9938WELT+) offer different amplification factors but share the same package and electrical characteristics.