MAX4061ETA+T

Audio Amplifiers Overview

The MAX4061ETA+T is a differential-input microphone preamplifier optimized for notebook and PDA audio systems. It operates from a single 2.4V to 5.5V supply with a typical supply current of 750µA. The device features adjustable gain set by a single external resistor, high power-supply rejection (86dB at 1kHz), and common-mode rejection (70dB at 1kHz). It includes a complete shutdown mode reducing current to 0.3µA. The part is housed in an 8-pin TDFN package with an exposed pad.

Audio Amplifiers Feature Summary

• Differential input structure providing superior noise rejection in digitally intense environments
• Adjustable voltage gain configured via a single external resistor between G1 and G2 pins
• Complete shutdown mode that reduces supply current to 0.3µA and disconnects microphone bias
• Integrated low-noise microphone bias generator with rail-to-rail output capability

Audio Amplifiers Applications

• Notebook Audio Systems
• Tablet PCs
• PDA Audio Systems
• USB Audio Peripherals
• AES-42-Compliant Microphones

Audio Amplifiers Procurement Notes

Verify the specific suffix 'ETA+' corresponds to the 8-pin TDFN package with an exposed pad and lead-free/RoHS compliance as indicated in the manufacturer's ordering information. Confirm the 'T' suffix denotes tape-and-reel packaging if required for automated assembly processes. Ensure compatibility with the specified operating temperature range of -40°C to +85°C for the target application environment.

Audio Amplifiers Selection Notes

Select this component when designing portable audio circuits requiring low-power consumption and high signal integrity. The adjustable gain feature allows optimization of the system signal-to-noise ratio. It is suitable for applications where physical layout constraints require the amplifier to be remote from the microphone sensor. Ensure the design accommodates the 2.4V minimum supply voltage requirement distinct from the fixed-gain MAX4060 variant.

Audio Amplifiers Part Context

This device belongs to the MAX4060/MAX4061/MAX4062 family of differential microphone preamplifiers manufactured by Analog Devices Inc./Maxim Integrated. While sharing similar core architectures for low-noise audio amplification, the MAX4061 is distinguished by its adjustable gain capability and dedicated shutdown control pin, unlike the fixed-gain MAX4060 or the auxiliary-input enabled MAX4062.

Audio Amplifiers Replacement Considerations

MAX4060ETA+ shares the same 8-pin TDFN package but lacks adjustable gain and shutdown functionality. MAX4061EUA+ offers identical electrical performance in an 8-pin µMAX package.