Maxim Integrated MAX5406EUM T

Description
The MAX5406 stereo audio processor provides a complete audio solution with volume, balance, bass, and treble controls.
It features dual 32tap logarithmic potentiometers for volume control, dual potentiometers for balance control, and linear digital potentiometers for tone control.
A simple debounced pushbutton interface controls all functions.
The MAX5406 advances the wiper setting once per button push.
Maxim's proprietary SmartWiperTM control eliminates the need for a microcontroller (HC) to increase the wiper transition rate.
Holding the control input low for more than 1s advances the wiper at a rate of 4Hz for 4s and 16Hz thereafter.
An integrated click/pop suppression feature eliminates the audible noise generated by the wiper's movements.
The MAX5406 provides a subwoofer output that internally combines the left and right channels.
An external filter capacitor allows for a customized cutoff frequency for the subwoofer output.
A bassboost mode enhances the lowfrequency response of the left and right channels.
An integrated bias amplifier generates the required (VDD Vss) / 2 bias voltage, eliminating the need for external op amps for unipolar operation.
The MAX5406 also features ambience control to enhance the separation of the left and rightchannel outputs for headphones and desktop speakers systems, and a pseudostereo feature that approximates stereo sound from a monophonic signal.
The MAX5406 is available in a 7mm x 7mm, 48pin TQFN package and in a 48pin TSSOP package and is specified over the extended (40°C to 85°C) temperature range.

Features
Audio Processor Including All Op Amps and Pots for Volume, Balance, Mute, Bass, Treble, Ambience, Pseudostereo, and Subwoofer
32Tap Volume Control (2dB Steps)
Small, 7mm x 7mm, 48Pin TQFN and 48Pin TSSOP Packages
Single 2.7V to 5.5V or Dual ±2.7V Supply Operation
Clickless Switching and Control
Mute Function to <90dB (typ)
Channel Isolation > 70dB (typ)
Two Sets of SingleEnded or Differential Stereo Inputs Can Be Used for Summing/Mixing
Debounced Pushbutton Interface Works with Momentary Contact Switches or Microprocessors (UPS)
Low 0.2µA (typ) Shutdown Supply Current
Shutdown Stores All Control Settings
0.02% (typ) THD into 10kΩ Load, 25µVRMS (typ) Output Noise
Internally Generated 1/2 FullScale Bias Voltage for SingleEnded Applications
PowerOn Volume Setting to 20dB
Internal Passive RF Filters for Analog Inputs Prevent High Frequencies from Reaching the Speakers

Applications
Automotive RearSeat Entertainment (RSE)
Desktop Speakers
Portable Audio
PDAs or MP3 Player Docking Stations
Karaoke Machines
FlatScreen TVs