MAX97001

Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifiers

2mm x 2.5mm, 20-Bump WLP Audio Subsystem with Limiter and Industry's Best Class D Speaker and Class H Headphone Amplifiers

Data Sheet (Rev. 1)

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Overview

2.7V to 5.5V Speaker Supply Voltage
1.6V to 2V Headphone Supply Voltage
700mW Speaker Output (V_PVDD = 3.7V, Z_SPK = 8Ω + 68µH)
37mW/Channel Headphone Output (R_HP = 16Ω)
Low-Emission Class D Amplifier
Efficient Class H Headphone Amplifier
Ground-Referenced Headphone Outputs
2 Stereo Single-Ended/Mono Differential Inputs
Integrated Distortion Limiter (Speaker Outputs)
Integrated DPST Analog Switch
No Clicks and Pops
TDMA Noise Free
2mm x 2.5mm, 20-Bump, 0.5mm Pitch WLP Package

The MAX97001 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 1µA 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 MAX97001 operates over the extended -40°C to +85°C temperature range, and is available in the 2mm x 2.5mm, 20-bump, WLP package (0.5mm pitch).

Applications

Cell Phones
Portable Multimedia Players

Documentation

Data Sheet 1

MAX97001: Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifiers Data Sheet (Rev.1) 08/03/2010

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Evaluation Kits

Evaluation Kit for the MAX97001

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Features and Benefits

Proven Audio PCB Layout
On-Board USB Interface Circuit Generates I²C-Compatible Signals
PCB Pads for User-Supplied I²C-Compatible Signals
Surface-Mount Components
Windows 2000-, Windows XP-, and Windows Vista (32-Bit)-Compatible Software
Fully Assembled and Tested

Product Details

The MAX97001 evaluation kit (EV kit) is a fully assembled and tested PCB that evaluates the MAX97001 mono Class D audio power amplifier and stereo Class H DirectDrive® headphone amplifier communicating over a 2-wire I²C interface. The EV kit features an on-board microcontroller for communicating with the I²C interface of the MAX97001. PCB pads are provided for accessing the analog inputs and amplifier outputs.

The MAX97001 EV kit requires a 2.7V to 5.5V supply for PVDD and a 1.8V supply for VDD.

Windows® 2000-, Windows XP®-, and Windows Vista®-compatible software is provided to facilitate configuration. The software controls an on-board microcontroller over USB, which generates I²C commands.