MAX4282ESA

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4282ESA is a dual-channel, open-loop, unity-gain-stable operational amplifier from the GainAmp family. It operates on a single +2.5V to +5.5V supply with a typical supply current of 320µA per amplifier. The device features rail-to-rail outputs capable of driving a 1kΩ load and maintains stability with capacitive loads up to 470pF. Input common-mode voltage ranges from VEE - 0.15V to VCC - 1.2V. Key electrical parameters include a gain-bandwidth product of 2MHz, a slew rate of 0.7V/µs, and an input offset voltage of ±0.5mV.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Unity-gain stable open-loop architecture optimized for flexible circuit prototyping
• Rail-to-rail output stage ensures maximum signal swing while driving standard loads
• Integrated high-voltage fault protection withstands inputs up to ±17V without damage

Instrumentation, Op Amps, Buffer Amps Applications

• Portable instruments and smart-card readers
• Infrared receivers and remote controls
• Low-side current-sense amplifiers
• Photodiode preamplifiers

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific package variant (SOIC-8) against the datasheet pinout configuration. Confirm that the application requires an open-loop topology rather than fixed-gain variants within the same family. Ensure power supply rails remain within the specified +2.5V to +5.5V range to maintain guaranteed performance specifications.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when a dual-channel, unity-gain-stable op amp is required for low-power single-supply designs. It serves as the core amplifier for the GainAmp family, allowing designers to prototype circuits before utilizing fixed-gain versions. Consider its 2MHz bandwidth and 320µA current consumption for applications prioritizing moderate speed and efficiency.

Instrumentation, Op Amps, Buffer Amps Part Context

This device belongs to the Maxim Integrated GainAmp family, which combines precision op amps with internal components. While other family members feature factory-trimmed resistors for fixed gains, the MAX4282 provides a standard open-loop configuration. This allows users to implement custom feedback networks while retaining the family's low-power and rail-to-rail characteristics.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

MAX4281 (single channel), MAX4284 (quad channel).

Instrumentation, Op Amps, Buffer Amps FAQ

What is the input common-mode voltage range?

The input common-mode voltage extends from 150mV below the negative supply (VEE - 0.15V) to within 1.2V of the positive supply (VCC - 1.2V).

Is the MAX4282 stable with capacitive loads?

Yes, the amplifier is stable with capacitive loads up to 470pF without requiring an isolation resistor.