MAX9004EUB

Overview

The MAX9004EUB is a low-power, high-speed single-supply integrated circuit combining an operational amplifier, a comparator, and a precision voltage reference. It operates from +2.5V to +5.5V supplies with typical quiescent current of 410µA. The op amp features an 8MHz gain-bandwidth product and is stable for closed-loop gains of +10V/V or greater. The device includes a shutdown mode reducing supply current to 2µA. It incorporates a 1.230V ±1% internal reference with 8ppm/°C drift and a fast 185ns propagation delay comparator.

Feature Summary

• Integrates a decompensated op amp, a fast comparator, and a precision reference in a compact package
• Features a dedicated shutdown control pin that reduces supply current to 2µA and places outputs in a high-impedance state
• Provides rail-to-rail output swing capability for both the amplifier and comparator stages
• Includes built-in hysteresis on the comparator input to ensure noise immunity and prevent oscillations

Applications

• Single-supply zero-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 the exact package type and temperature range. Confirm availability status directly with authorized distributors as inventory levels fluctuate. Ensure the selected variant matches the required electrical characteristics for your specific application design.

Selection Notes

Select this component when a combined solution for amplification, comparison, and reference generation is required in a space-constrained design. Choose the MAX9004 specifically if the application demands a decompensated amplifier with an 8MHz bandwidth and requires the power-saving shutdown functionality provided by the EUB package variant.

Part Context

This device belongs to the MAX9000 family of mixed-signal ICs designed for portable and battery-powered applications. The family offers various configurations of op amps, comparators, and references. The MAX9004 specifically integrates all three functional blocks within a single chip, providing a comprehensive signal conditioning solution for analog front-end designs.

Replacement Considerations

Consult official manufacturer documentation for confirmed substitute part numbers. Verify that any replacement maintains compatibility with the required supply voltage range, package dimensions, and electrical performance specifications.

FAQ

What is the stability requirement for the operational amplifier section?

The amplifier in the MAX9004 is decompensated and is stable only for closed-loop gains of +10V/V or greater.

How does the shutdown mode affect the device operation?

Asserting the shutdown logic high sets the outputs into a high-impedance state and reduces the supply current to approximately 2µA.

What are the input common-mode voltage limits for the comparator?

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