MAX4474EKA+T

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4474EKA+T is a dual-channel micropower operational amplifier from the MAX4464/MAX4470 family, manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +1.8V to +5.5V supply with a typical supply current of 750nA per amplifier. The device features a 40kHz gain-bandwidth product and is stable for closed-loop gains of ≥ +5V/V. It offers rail-to-rail output capability, ground-sensing inputs, and an operating temperature range of -40°C to +85°C in an 8-pin SOT23 package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-low power consumption with 750nA supply current per amplifier
• Rail-to-rail output stage capable of driving loads near supply rails
• Ground-sensing input common-mode voltage range
• No phase reversal for overdriven inputs

Instrumentation, Op Amps, Buffer Amps Applications

• Single lithium ion battery systems
• Two-cell NiCd or alkaline battery systems
• Portable instrumentation
• Micropower thermostats
• Electrometer amplifiers

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix 'EKA+T' corresponds to the 8-pin SOT23 package and the -40°C to +85°C temperature range as documented in the official datasheet. Confirm that the component meets lead-free/RoHS compliance requirements indicated by the '+' designation. Ensure compatibility with the required gain configuration, as this model requires a minimum closed-loop gain of +5V/V for stability.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select the MAX4474EKA+T when a dual-channel amplifier is required with ultra-low quiescent current for battery-powered applications. This part is suitable for designs needing rail-to-rail output swing and ground-referenced inputs. Note that it is decompensated and requires a minimum closed-loop gain of +5V/V; use unity-gain stable variants like the MAX4470 if lower gains are necessary.

Instrumentation, Op Amps, Buffer Amps Part Context

The MAX4474EKA+T belongs to the MAX4464/MAX4470/MAX4471/MAX4472/MAX4474 family of micropower op amps. These devices share similar electrical characteristics but differ in channel count and compensation. The MAX4474 specifically provides two channels optimized for higher bandwidth (40kHz) compared to the 9kHz variants, while maintaining the same low-power profile and package options.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct substitutes within the same family include the MAX4474EUA+ (µMAX package) and MAX4474ESA+ (SOIC package). For different channel counts or stability requirements, consider the MAX4470 (single, unity-gain stable), MAX4471 (dual, unity-gain stable), or MAX4472 (quad, unity-gain stable).