MAX9890AEBL+T

Audio Special Purpose Overview

The MAX9890AEBL+T is a single-channel audio click-and-pop suppressor designed for devices such as CODECs with integrated headphone amplifiers that lack clickless/popless startup or shutdown capabilities. It operates on a 2.7V to 5.5V single supply, consuming 14μA during operation and 0.001μA in shutdown. The device provides 36dB of click-and-pop suppression by controlling the ramping of the DC bias voltage on output-coupling capacitors and the application of the audio signal. It maintains THD+N below 0.003% into a 32Ω load and features ±8kV HBM ESD protection on the outputs. The component is housed in a miniature 9-bump UCSP package (1.5mm x 1.5mm x 0.6mm). The 'A' suffix indicates a 200ms startup time, suitable for coupling capacitors up to 100μF.

Audio Special Purpose Feature Summary

• Provides 36dB click-and-pop suppression
• Ultra-low power consumption: 14μA active, 0.001μA shutdown
• High linearity with THD+N < 0.003% into 32Ω loads
• Robust ESD protection rated at ±8kV Human Body Model
• Single-supply operation from 2.7V to 5.5V
• Requires only one 0.1μF capacitor to complete the circuit

Audio Special Purpose Applications

• Cell Phones
• High-End Notebook Audio
• PDAs
• Portable DVD Players
• Portable MP3 Players

Audio Special Purpose Procurement Notes

Verify the specific suffix 'EBL' corresponds to the 9-bump UCSP package and 'A' indicates the 200ms turn-on time. Confirm RoHS compliance via the '+' designation. Check current availability status as older Maxim Integrated products may have limited stock or obsolescence notices.

Audio Special Purpose Selection Notes

Select the MAX9890A version when using output coupling capacitors of 100μF or less. Use the MAX9890B variant if the design requires larger capacitors exceeding 100μF for extended low-frequency response. Ensure the SHDN pin logic levels match the system control voltage.

Audio Special Purpose Part Context

This component belongs to the MAX9890 family of audio click-and-pop suppressors. The MAX9890AEBL+T specifically denotes the A-version with a 200ms startup time, packaged in the miniature 9-bump UCSP format. It serves as an interface between headphone amplifiers and output coupling capacitors to prevent audible transients.

Audio Special Purpose Replacement Considerations

The MAX9890BEBL+T is a functional alternative within the same package but features a longer 330ms turn-on time. Other packages such as TDFN-EP (MAX9890AETA) offer identical electrical performance but require different footprint layouts.