MAX9634TEUK+T

Instrumentation, Op Amps, Buffer Amps Overview

The MAX9634TEUK+T is a high-side current-sense amplifier with a fixed gain of 25V/V. It features an input offset voltage (VOS) under 250μV and a gain error below 0.5%. The quiescent supply current is 1μA, and the common-mode input range spans from 1.6V to 28V. The device operates within an extended temperature range of -40°C to +85°C and is housed in a 5-pin SOT23 package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-low power consumption with a maximum quiescent supply current of 1μA
• High precision accuracy characterized by low input offset voltage and minimal gain error
• Wide common-mode input voltage range supporting operation down to 1.6V

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 that the specific suffix TEUK corresponds to the 25V/V gain variant and the 5-pin SOT23 package configuration. Confirm compliance with RoHS standards as indicated by the plus sign in the part number. Ensure the procurement channel provides documentation verifying the extended temperature range specifications for the intended operating environment.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when designing battery-operated portable devices requiring precise current monitoring with strict space constraints. The 25V/V gain setting is suitable for applications where the sense resistor produces a higher full-scale voltage drop compared to higher-gain variants. Verify that the system's minimum supply voltage aligns with the 1.6V lower limit of the common-mode range.

Instrumentation, Op Amps, Buffer Amps Part Context

The MAX9634 series includes four gain versions: 25V/V (T), 50V/V (F), 100V/V (H), and 200V/V (W). These amplifiers are designed for unidirectional current sensing in high-side configurations. The device utilizes internal matched resistors to establish gain accuracy without external components, simplifying the circuit design for portable electronics.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Other members of the MAX9634 family such as MAX9634FEUK+T, MAX9634HEUK+T, or MAX9634WEUK+T offer identical packaging and electrical characteristics but feature different fixed gains of 50V/V, 100V/V, or 200V/V respectively.