Audio Subsystem - Maxim Integrated Products
Description
19-5111; Rev 0; 1/10
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TION KIT EVALUA BLE IL AVA A
Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifiers
General Description Features
S 2.
7V to 5.
5V Speaker Supply Voltage S 1.
6V to 2V Headphone Supply Voltage S 700mW Speaker Output (VPVDD = 3.
7V, ZSPK = 8ω + 68µH) S 37mW/Channel Headphone Output (RHP = 16I) S Low-Emission Class D Amplifier S Efficient Class H Headphone Amplifier S Ground-Referenced Headphone Outputs S 2 Stereo Single-Ended/Mono Differential Inputs S Integrated Distortion Limiter (Speaker Outputs) S Integrated DPST Analog Switch S No Clicks and Pops S TDMA Noise Free S 2mm x 2.
5mm, 20-Bump, 0.
5mm Pitch WLP Package
MAX97002
The MAX97002 mono audio subsystem combines a mono speaker amplifier with a stereo headphone amplifier and an analog DPST switch.
The headphone and speaker amplifiers have independent volume control and on/off control.
The 4 inputs are configurable as 2 differential inputs or 4 single-ended inputs.
The entire subsystem is designed for maximum efficiency.
The high-efficiency, 700mW, Class D speaker amplifier operates directly from the battery and consumes no more than 1FA in shutdown mode.
The Class H headphone amplifier utilizes a dual-mode charge pump to maximize efficiency while outputting a groundreferenced signal that does not require output coupling capacitors.
The speaker amplifier incorporates a distortion limiter to automatically reduce the volume level when excessive clipping occurs.
This allows high gain for low-level signals without compromising the quality of large signals.
All control is performed using the 2-wire I2C interface.
The MAX97002 operates over the extended -40NC to +85NC temperature range, and is available in the 2mm x 2.
5mm, 20-bump, WLP package (0.
5mm pitch).
Ordering Information
PART MAX97002EWP+ TEMP RANGE -40NC to +85NC PIN-PACKAGE 20 WLP
Applications
Cell Phones Portable Media Players
Simplified Block Diagram
1.
8V BATTERY I2C CONTROL
POWER ...
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