MAX9000ESA+T

Overview

The MAX9000ESA+T is a low-power, high-speed single-supply integrated circuit combining an operational amplifier, a comparator, and a precision voltage reference. It operates from a +2.5V to +5.5V supply with quiescent current typically at 410µA. The op-amp offers unity-gain stability with a 1.25MHz gain-bandwidth product. The comparator features a 185ns propagation delay and ±2mV hysteresis. An internal 1.230V reference provides ±1% accuracy. It is housed in an 8-pin SO package.

Feature Summary

• Combines a high-speed op amp, fast comparator, and precision reference in a compact 8-pin SO package
• Operates on a single +2.5V to +5.5V supply with ultra-low power consumption
• Features rail-to-rail outputs for both the amplifier and comparator stages
• Includes built-in ±2mV comparator hysteresis for noise immunity

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 suffix 'ESA+T' against the manufacturer's official documentation to confirm the exact package type, temperature range, and tape-and-reel packaging configuration. Ensure compatibility with the required operating environment and electrical specifications before integration.

Selection Notes

Select this component when a combined solution for amplification, comparison, and reference generation is required in a space-constrained design. It is suitable for applications needing rail-to-rail output swing and low supply current within a single-supply voltage range of 2.5V to 5.5V.

Part Context

This device belongs to the MAX9000 family of mixed-signal ICs designed by Analog Devices/Maxim Integrated. The family integrates multiple analog functions into a single chip to reduce board space and component count. The MAX9000 variant specifically includes an internal precision reference connected to the comparator's inverting input.

Replacement Considerations

Consult the official datasheet selector guide for pin-compatible alternatives within the MAX9000 series, such as the MAX9001 or MAX9002, which offer variations in shutdown modes or reference availability.

FAQ

How does the MAX9000ESA+T handle overdriven inputs?

The device is designed with no phase reversal for overdriven inputs for both the operational amplifier and the comparator, ensuring stable operation even when input signals exceed the common-mode range.

What is the function of the internal reference in the MAX9000?

The MAX9000 includes an internal 1.230V precision reference with ±1% initial accuracy. In this specific part, the comparator's inverting input is internally connected to this reference output.