MAX9890BETA/V+

Audio Special Purpose Overview

The MAX9890BETA/V+ is an audio click-pop suppressor manufactured by Analog Devices Inc./Maxim Integrated. It provides click-and-pop suppression for devices such as CODECs with integrated headphone amplifiers that lack a clickless/popless startup/power-up or shutdown/power-down. The device controls the ramping of the DC bias voltage on the output-coupling capacitors and the application of the audio signal to ensure no audible transients are present at the headphones. The 'B' suffix indicates a 330ms startup time, suitable for use with coupling capacitors greater than 100µF. It operates within a supply voltage range of 2.7V to 5.5V and features low power consumption (14µA typical supply current, 0.001µA in shutdown). The component is specified for operation over the -40°C to +85°C temperature range.

Audio Special Purpose Feature Summary

• 36dB Click-Pop Suppression
• 2.7V to 5.5V Single-Supply Operation
• Clickless/Popless Startup/Power-Up and Shutdown/Power-Down
• 0.001µA Low-Power Shutdown Mode
• THD+N < 0.003% Into 32Ω
• ±8kV ESD Protected Outputs (Human Body Model)
• Requires Only One 0.1µF Capacitor to Complete the Circuit
• Low 14µA Supply Current
• 8-Pin TDFN Package (3mm x 3mm x 0.8mm)

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 'BETA/V+' against official documentation to confirm pinout and electrical tolerances. Note that the MAX9890 family has been subject to obsolescence notices; check the latest product lifecycle status with the manufacturer or authorized distributors. Ensure packaging matches required handling specifications.

Audio Special Purpose Selection Notes

Select this component when designing audio paths requiring effective click and pop mitigation. The 'B' variant is specifically chosen for applications using coupling capacitors larger than 100µF due to its 330ms startup time. Verify that the 2.7V minimum supply voltage meets the system's power budget and that the analog interface is compatible with the preceding audio stage.

Audio Special Purpose Part Context

This part belongs to the Maxim Integrated audio specialty category, specifically engineered as a click-pop suppressor. It addresses transient noise issues common in audio switching scenarios where CODECs do not have built-in protection.