MAX9002ESA

Overview

The MAX9002ESA is a low-power, high-speed single-supply operational amplifier from the MAX9000 family. It operates within a +2.5V to +5.5V supply range and draws 340µA of quiescent current. The device features a unity-gain stable op amp with a 1.25MHz gain-bandwidth product and an 850mV/µs slew rate. It includes a comparator with 185ns propagation delay and ground-sensing inputs. The package is an 8-pin SOIC.

Feature Summary

• Combines a high-speed op amp and a fast comparator in a space-saving package
• Operates from a single +2.5V to +5.5V supply with low power consumption
• Op amp outputs swing rail-to-rail for extended dynamic range
• Ground-sensing inputs allow operation near the negative supply rail

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct package type and temperature rating. Confirm availability status as distribution channels may vary. Check for any recent product change notices or lifecycle updates directly from Analog Devices before finalizing procurement plans.

Selection Notes

Select this component when a combined op amp and comparator solution is required in a compact form factor. It is suitable for applications needing rail-to-rail output swing and ground-sensing capabilities on a single supply. Ensure the design does not require the internal precision reference found in other family members like the MAX9000.

Part Context

The MAX9002ESA belongs to the MAX9000 series of mixed-signal ICs integrating analog functions. Unlike the MAX9000 or MAX9003, it lacks an internal voltage reference, providing the comparator's inverting input externally. This configuration offers flexibility for custom reference designs while maintaining the high-speed performance characteristics of the family.

Replacement Considerations

Consult the official datasheet selector guide for pin-compatible alternatives within the MAX9000 series. Verify that substitute parts match the required gain stability and bandwidth specifications. Ensure any replacement maintains the same operating voltage range and package dimensions for direct board integration.

FAQ

Does the MAX9002ESA include an internal voltage reference?

No, the MAX9002 does not feature an internal precision reference. The comparator's inverting input is available externally for connection to an external reference source.

What is the gain stability characteristic of the op amp in the MAX9002?

The op amp in the MAX9002 is unity-gain stable with a gain-bandwidth product of 1.25MHz. This differs from decompensated variants in the family which require higher closed-loop gains.

How does the MAX9002 handle overdriven inputs?

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