MAX4285EUT-T

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4285EUT-T is a single-channel, high-speed ADC buffer amplifier in a 6-pin SOT-23 package. It operates from a +2.85V to +6.5V single supply or ±1.425V to ±3.25V dual supplies. Key electrical parameters include a 250MHz small-signal bandwidth, 350V/µs slew rate, and 8ns settling time to 0.1%. The device features a high-speed disable function that reduces quiescent current to 1mA and places the output in a high-impedance state (typically 35kΩ). It provides an output drive of -106mA to +77mA and maintains low distortion with 88dBc SFDR at 5MHz.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• High-speed performance optimized for driving demanding analog-to-digital converter inputs
• Integrated high-speed enable/disable control for power management and multiplexing applications
• Wide input common-mode range extending to the negative power-supply rail
• Space-saving 6-pin SOT-23 packaging suitable for compact designs

Instrumentation, Op Amps, Buffer Amps Applications

• High-speed ADC drivers
• Communications equipment
• Instrumentation systems
• CCD imaging systems
• Ultrasound devices

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix EUT-T corresponds to the 6-pin SOT-23 package and tape-and-reel delivery format. Confirm the temperature range is industrial (-40°C to +85°C) as indicated by the 'E' suffix. Ensure the component is lead-free and RoHS compliant per the manufacturer's standard specifications for this part number before finalizing procurement.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when unity-gain stability is required alongside high-speed buffering capabilities. The MAX4285 variant is internally compensated for gains of +1V/V or greater, distinguishing it from the gain-of-five compensated MAX4286. Consider the high-speed disable feature if system-level power reduction or signal isolation during idle states is necessary for the application design.

Instrumentation, Op Amps, Buffer Amps Part Context

This device belongs to the MAX4285–MAX4288/MAX4387/MAX4388 family of +3V/+5V, 250MHz ADC buffer amplifiers. While other members offer dual channels or different compensation characteristics, the MAX4285 specifically provides a single-channel solution in a compact SOT-23 footprint. It serves as a voltage-feedback operational amplifier designed to meet the dynamic input drive requirements of high-speed data acquisition systems.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct pin-compatible replacements within the same family include the MAX4286EUT-T, which offers similar performance but is compensated for gains of +5V/V or greater rather than unity gain.