MAX9005ESA

Overview

The MAX9005ESA 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 6.0V/µs slew rate for closed-loop gains of +10V/V or greater. The comparator features 185ns propagation delay and ±2mV built-in hysteresis. Outputs swing rail-to-rail, and the device is housed in an 8-pin SOIC package.

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 stable switching
• Low power consumption suitable for battery-powered portable applications

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors. Confirm package integrity and pin alignment upon receipt. Review manufacturer documentation for handling precautions and storage conditions. Ensure compatibility with existing design specifications before integration.

Selection Notes

Select this part when a combined amplification, comparison, and reference solution is required in limited space. Choose over discrete components to reduce board area and simplify biasing networks. Consider the decompensated nature requiring minimum gain of ten for stability.

Part Context

This component belongs to the MAX9000 family of mixed-signal ICs designed for portable electronics. It integrates multiple analog functions typically found as separate chips into a single monolithic structure. The family includes variants with shutdown modes and different gain stabilities.

Replacement Considerations

Consult official manufacturer documentation for confirmed substitute part numbers. Verify electrical parameter equivalence and pinout compatibility before substitution.

FAQ

Is the MAX9005 op-amp unity-gain stable?

No, the MAX9005 op-amp is decompensated and requires a closed-loop gain of +10V/V or greater for stability.

Does the MAX9005 include an internal voltage reference?

No, the MAX9005 does not contain an internal reference; only the MAX9000, MAX9001, MAX9003, and MAX9004 models include one.

What is the input common-mode voltage range for the comparator?

The comparator input common-mode voltage extends from 150mV below the negative supply to within 1.1V of the positive supply.