Audio Subsystem - Maxim Integrated Products
Description
19-5004; Rev 0; 11/09
TION KIT EVALUA BLE AVAILA
Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifier
General Description Features
S 2.
7V to 5.
5V Single Supply Voltage S 725mW Speaker Output (VPVDD = 3.
7V, ZSPK = 8I + 68µH) S 40mW/Channel Headphone Output (RHP = 16I) S Low-Emission Class D Amplifier S Efficient Class H Headphone Amplifier S Ground-Referenced Headphone Outputs S Two 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 2mm, 25-Bump 0.
4mm Pitch WLP Package
MAX97000
The MAX97000 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 four inputs are configurable as two differential inputs or four single-ended inputs.
The entire subsystem is designed for maximum efficiency.
The high-efficiency 725mW 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 ground-referenced 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 MAX97000 operates in the extended -40NC to +85NC temperature range, and is available in the 2mm x 2mm, 25-bump WLP package (0.
4mm pitch).
Ordering Information
PART MAX97000EWA+ TEMP RANGE -40NC to +85NC PIN-PACKAGE 25 WLP
+Denotes a lead(Pb)-free/RoHS-compliant package.
Applications
Cell Phones Portable Multimedia Players
Simplified Block Diagram
www.
DataSheet4U.
com
BATTERY 2.
7V TO 5.
5V I2...
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