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On Semi NCP2830 1W无滤波器D类音频放大方案

    On Semi 公司的NCP2830是1W无滤波器D类音频放大器, 为8.0欧姆(?)桥接负载(BTL)提供连续的高质量音频输出,即使输入电压变化,总谐波失真(THD)都低于1%. NCP2830的工作电源电压介于2.7伏(V)与5.5 V,提供200微秒的(μS)的快速启动时间以及-88分贝(dB)的优异电源纹波抑制比(PSRR)。总能效高达89%,并提供100 dB信噪比(SNR)的低噪声性能,主要应用在手机和数码相机,PDA和PMP以及音频配件与GPS.本文介绍了NCP2830的主要特性,典型应用电路以及差分与单端配置.

    NCP2830 is a cost effective mono audio power amplifier designed for portable communication device applications such as mobile phones. Due to its integrated charge pump structure, this part is capable of delivering 1 W of continuous average power to an 8.0ohm Bridge Tied Load no matter the voltage provided by a lithium/Ion battery.

    NCP2830 is a preferred solution for long playback audio with minimum space required.Added to a fast start?up time of 200 us and a ?88dB PSRR, the NCP2830 audio power amplifier is specifically designed to provide high quality and level output power from low supply voltage, requiring very few external components.

    NCP2830主要特性:

    1 W to 8 _ load for VDD from 2.7 V up to 5.5 V

    High quality audio (THD+N = 0.04%)

    Low noise: SNR up to 100 dB

    Very Fast Turn On Time: 200 us

    Overall system efficiency optimization: up to 89%

    Superior PSRR (?88 dB): Direct Connection to Battery

    Very Low Quiescent Current 7 mA

    Optimized PWM Output Stage: Filterless Capability

    Selectable gain of 2 V/V or 4 V/V

    Fully Differential Capability:

    Thin QFN 3x3 mm, 20 pins

    This Device uses Halogen?Free Molding Compound

    This is a Pb?Free Device

    NCP2830应用:

    Cellular Phones and Digital Cameras

    Personal Digital Assistant and Portable Media Player

    Audio Accessories

    GPS

热门搜索:TLM825SA PS361206 01T1001JF 6SPDX TLM626NS TLP76MSG BTS412B2E3062A TLP602 PS-415-HG 2811271 PS-410-HGOEMCC 2856087 01T5001JF SBB8006-SS-1 SBB400 SS7619-15 2856032 TLP606B PSF2408 SS3612 TLP808TELTAA B10-8000-PCB 02T1001JF PSF3612 N060-004
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