MAX9001EUB-T

Overview

The MAX9001EUB-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 +2.5V to +5.5V supplies with typical quiescent current of 410µA. The unity-gain stable op amp offers a 1.25MHz gain-bandwidth product and rail-to-rail outputs. The device includes a shutdown mode reducing current to 2µA and features a 1.230V ±1% reference with 8ppm/°C drift.

Feature Summary

• Integrates a high-speed op amp, fast comparator, and precision reference in a compact µMAX package
• Features a dedicated shutdown mode that reduces supply current to 2µA for battery-powered applications
• Provides internal ±2mV hysteresis in the comparator to ensure noise immunity and prevent oscillations
• Operates with ground-sensing inputs allowing signals to swing down to the negative supply rail

Applications

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

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration when sourcing. Confirm the 'EUB' designation corresponds to the 10-pin µMAX package variant. Ensure the component meets RoHS compliance standards required for the target assembly process.

Selection Notes

Select this part when space-constrained designs require combined amplification, comparison, and reference functions. Choose the MAX9001 over the MAX9000 specifically for the inclusion of the shutdown control pin. Verify that the 1.25MHz bandwidth meets the signal processing requirements compared to higher-speed decompensated variants.

Part Context

This component belongs to the MAX9000 family of mixed-signal interface ICs designed for portable electronics. It consolidates three distinct analog blocks into a single footprint, simplifying schematic design and reducing board area. The family provides options for both unity-gain stable and decompensated amplifier configurations.

Replacement Considerations

Official substitutes within the same series include the MAX9000EUB+T, MAX9003EUB+T, and MAX9004EUB+T. These parts share identical pinouts and core functionality but differ in amplifier stability characteristics or the presence of the shutdown feature.

FAQ

How does the MAX9001 handle input signals that exceed the common-mode range?

The device is designed with no phase reversal for overdriven inputs, ensuring stable operation even when the common-mode voltage exceeds the specified limits.

What is the function of the SHDN pin on the MAX9001?

The SHDN pin enables a shutdown mode that places all outputs in a high-impedance state and reduces the supply current to approximately 2µA.