MAX97000
Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifier
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Industry's Smallest 2mm x 2mm 25-Bump WLP Audio Subsystem with Limiter, Best Class D and H Class Headphone Amplifier
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Features
- 1.6V to 2.0V Headphone Supply Voltage
- 2.7V to 5.5V Speaker Supply Voltage
- Internal LDO Allows Single-Supply Operation
- 725mW Speaker Output (VPVDD = 3.7V, ZSPK = 8Ω + 68µH)
- 40mW/Channel Headphone Output (RHP = 16Ω)
- Low-Emission Class D Amplifier
- Efficient Class H Headphone Amplifier
- Ground-Referenced Headphone Outputs
- Two Stereo Single-Ended/Mono Differential Inputs
- Integrated Distortion Limiter (Speaker Outputs)
- Integrated DPST Analog Switch
- No Clicks and Pops
- TDMA Noise Free
- 2mm x 2mm, 25-Bump 0.4mm Pitch WLP Package
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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 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-levels signals without compromising the quality of large signals.
All control is performed using the 2-wire, I²C interface. The MAX97000 operate in the extended -40°C to +85°C temperature range, and is available in the 2mm x 2mm, 25-bump WLP package (0.4mm pitch).
Applications
- Cell Phones
- Portable Multimedia Players
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MAX97000
Documentation
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Software & Part Ecosystem
Evaluation Kits 1
MAX97000EVKIT
Evaluation Kit for the MAX97000
Features and Benefits
- 2.7V to 5.5V Single-Supply Operation
- 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 Detail
The MAX97000 evaluation kit (EV kit) is a fully assembled and tested PCB that evaluates the MAX97000 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 MAX97000. Pads are provided for accessing the analog inputs and amplifier outputs.
The MAX97000 EV kit requires a 2.7V to 5.5V power supply. The on-chip LDO generates an internal 1.8V supply from the 2.7V to 5.5V supply.
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.
Applications
- Cell Phones
- Portable Multimedia Players