MAX4468EKA

Overview

The MAX4468EKA+T is a single-channel Class-AB microphone preamplifier manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 2.4 V to 5.5 V and features an input offset voltage (Vos) of 5 mV and an input bias current (Ib) of 100 nA. The device provides a common-mode rejection ratio (CMRR) of 80 dB and a power supply rejection ratio (PSRR) of 112 dB. Its gain-bandwidth product is 0.6 MHz, with a maximum power dissipation of 421 mW. It supports shutdown functionality and functions in temperatures from -40°C to +85°C.

Feature Summary

• Integrated shutdown control for power management
• High common-mode rejection for noise reduction
• Low input offset voltage for signal accuracy

Applications

• Microphone preamplification circuits
• Audio signal conditioning
• Portable audio devices

Procurement Notes

Verify the exact suffix against official documentation to confirm package type and temperature grade. Confirm RoHS compliance status through manufacturer datasheets. Check availability as distribution channels may vary. Ensure pinout compatibility with target PCB layout before procurement.

Selection Notes

Select this component for applications requiring low-power microphone amplification with high CMRR. Compare GBP and Vos against other MAX446x variants like MAX4467 or MAX4469 based on bandwidth needs. Verify SOT-23-8 footprint requirements against design constraints.

Part Context

Part of the MAX446x series of low-cost, micropower microphone preamplifiers. Designed for SC70/SOT23-8 packages. Offers Class-AB output stage performance optimized for audio applications.

Replacement Considerations

MAX4467EKA+T: Similar specs but lower GBP (0.2 MHz). MAX4469EKA+T: Dual-channel variant without shutdown.