MAX9005ESA+T

Overview

The MAX9005ESA+T is a low-power, high-speed single-supply integrated circuit combining an operational amplifier, a comparator, and precision voltage reference components. It operates from a +2.5V to +5.5V supply with typical quiescent current of 340µA. The op-amp offers an 8MHz gain-bandwidth product and stable operation for closed-loop gains of +10V/V or greater. The comparator features a fast 185ns propagation delay and built-in hysteresis. The device utilizes an 8-pin SOIC package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Combines high-speed op-amp, fast comparator, and precision reference in a compact package
• Rail-to-rail output capability for both amplifier and comparator stages
• Built-in comparator hysteresis ensures noise immunity and prevents oscillations
• Low power consumption suitable for portable and battery-powered applications

Applications

• Single-supply zero-drift photodiode preamplifiers
• Crossing detectors and smart card readers
• Infrared receivers and bar-code readers for remote controls
• Keyless entry systems and sensor signal detection

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and temperature range. Ensure compatibility with existing board layouts regarding pin configurations. Confirm availability status through authorized distribution channels as stock levels fluctuate.

Selection Notes

Select this component when a combined solution for amplification, comparison, and reference generation is required in a space-constrained design. Consider the decompensated nature of the op-amp which requires a minimum closed-loop gain of +10V/V for stability. Evaluate the 340µA supply current against system power budgets for battery-operated devices.

Part Context

This part belongs to the MAX9000 family of mixed-signal ICs designed for low-voltage, single-supply applications. The family integrates multiple analog functions to reduce component count and board space. The MAX9005 variant specifically excludes the internal voltage reference found in other family members, providing external access to the comparator's inverting input instead.

Replacement Considerations

Consult official manufacturer substitution guides for confirmed compatible alternatives. Verify that any replacement maintains the same 8MHz gain-bandwidth product and 185ns propagation delay specifications. Ensure the alternative device supports the required +2.5V to +5.5V single-supply operation range.