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MAX97000 具有單聲道D類揚(yáng)聲器放大器和H類耳機(jī)放大器
MAX97000 具有單聲道D類揚(yáng)聲器放大器和H類耳機(jī)放大器的音頻子系統(tǒng)
概述
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 4 inputs are configurable as 2 differential inputs or 4 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).
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).
關(guān)鍵特性
| 2.7V to 5.5V Single Supply Voltage | |
| 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 | |
| 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 2mm, 25-Bump 0.4mm Pitch WLP Package |
應(yīng)用/使用
蜂窩電話
便攜式多媒體播放器
便攜式多媒體播放器
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