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发布者:来自网络 发布时间:2015/5/21 阅读:2509次    关键字: 音频功放
EMA2012-2.7W Mono Class-D Audio Amplifier


EMA2012-2.7W Mono Filter-less Class-D Audio Amplifier with Default Gain +18dB DataSheet

Description
    The EMA2012 is a mono, filter-less class-D
audio amplifier. Operating with 5.0V loudspeaker
driver supply, it can deliver 2.7W output power
into 4 Ω loudspeaker within 10% THD+N or 2.2W
at 1% THD+N. The gain can be reduced by
external input resistors.
    The EMA2012 is a mono audio amplifier with
high efficiency and suitable for the notebook
computer, and portable multimedia device.

Features
􀁺 Supply voltage range: 2.5 V to 5.5 V
􀁺 Support single-ended or differential analog input
􀁺 Low static operation current
􀁺 Low shut-down current
􀁺 Short power-on transient time
􀁺 Internal pull-low resistor on shut-down pins
􀁺 Short-circuit protection
􀁺 Over-temperature protection
􀁺 Default gain +18dB
􀁺 Loudspeaker power within 10% THD+N
􀂄 1.66W/ch into 8Ω loudspeaker
􀂄 2.70W/ch into 4Ω loudspeaker
􀁺 Loudspeaker efficiency
􀂄 90% @ 8Ω, THD+N=10%
􀂄 85% @ 4Ω, THD+N=10%
􀁺 TDFN-8 packages
􀁺 Integrated de-pop circuitry
􀁺 Internal generated 450kHz switching frequency

Applications
􀁺 Monitor audio
􀁺 PDA
􀁺 Portable multimedia devices
􀁺 Notebook computer
􀁺 Mobile phone

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