MAX951ESA+TG002

Overview

The MAX951ESA+TG002 is an ultra-low-power, single-supply integrated circuit combining a micro-power operational amplifier, comparator, and precision reference within an 8-pin SO package. It operates from a supply voltage range of 2.7V to 7V with a typical supply current of 7μA. The device features rail-to-rail outputs, ground-referenced inputs, and internal ±3mV hysteresis for clean switching. It includes a 1.2V ±2% bandgap reference and offers unity-gain stable or decompensated op amp options.

Feature Summary

• Combines op amp, comparator, and reference in an 8-pin package
• Ultra-low power consumption with 7μA typical supply current
• Rail-to-rail input and output stages for maximum dynamic range
• Internal 1.2V ±2% bandgap reference connected to comparator

Applications

• Battery-powered portable instruments and terminals
• Low-frequency local-area alarms and detectors
• Photodiode preamplifiers for sensor interfaces
• Smart card applications requiring low power
• Infrared receivers for remote control systems

Procurement Notes

Verify the specific suffix TG002 against official manufacturer documentation to confirm tape-and-reel packaging details and any unique processing requirements. Ensure compatibility with standard SO-8 land patterns during PCB design. Cross-reference the exact part number with Analog Devices Inc./Maxim Integrated catalogs to confirm current production status and availability.

Selection Notes

Select this component when system design requires minimal quiescent current alongside signal conditioning and threshold detection functions. The integrated reference eliminates external components for the comparator stage. Choose between unity-gain stability or higher bandwidth based on the specific frequency response needs of the application circuit.

Part Context

This device belongs to the MAX951–MAX954 family of ultra-low-power mixed-signal ICs. The MAX951 variant specifically integrates a unity-gain stable op amp with a comparator tied to an internal 1.2V reference. The family is designed for single-supply operation in space-constrained, battery-operated environments where power efficiency is critical.

Replacement Considerations

Official substitutes include other members of the MAX95x family such as the MAX952ESA+, MAX953ESA+, or MAX954ESA+. Selection depends on whether the internal reference and specific op amp gain stability characteristics match the original circuit requirements.

FAQ

How does the internal reference affect the comparator configuration?

In the MAX951, the comparator's inverting input is internally connected to the 1.2V ±2% bandgap reference, simplifying threshold setting without external resistors.

What is the common-mode input voltage range?

The common-mode input voltage range extends from the negative supply rail (VSS) to within 1.6V of the positive rail (VDD).