集成巴黎人手机版网址芯片资料和参数

芯片型号:AF4863

功能特点

AF4863 Dual 2.2W Audio Amplifier Plus Stereo Headphone

AF4863 2x2.2W 立体声耳机 音频功率放大器

General Description:

The AF4863 is a dual bridge-connected audio power amplifier which, when connected to a 5V supply, will deliver 2.2W to a 4Ω load (Note 1) or 2.5W to a 3Ω load (Note 2) with less than 1.0% THD+N. In addition, the headphone input pin allows the amplifiers to operate in single-ended mode when driving stereo headphones. Boomer audio power amplifiers were designed specifically to provide high quality output power from a surface mount package while requiring few external components. To simplify audio system design, the A4863 combines dual bridge

speaker amplifiers and stereo headphone amplifiers on one chip. The AF4863 features an externally controlled, low-power consumption shutdown mode, a stereo headphone amplifier mode, and thermal shutdown protection. It also utilizes circuitry to reduce “clicks and pops” during device turn-on.

Features:

■ PO at 1% THD+N

  AF4863LQ, 3Ω, 4Ω loads 2.5W(typ), 2.2W(typ)

  AF4863MTE, 3Ω, 4Ω loads 2.5W(typ), 2.2W(typ)

  AF4863MTE, 8Ω load 1.1W(typ)

  AF4863, 8Ω 1.1W(typ)

  输出功率PO:2.5W(typ) (5V,3Ω, 1% THD+N )

  输出功率PO:2.2W(typ) (5V,4Ω, 1% THD+N )

  输出功率PO:1.1W(typ) (5V,8Ω, 1% THD+N )

  单端模式THD+N,32Ω,75mW功率,装载0.5%(最大)

■ Single-ended mode THD+N at 75mW into 32Ω 0.5%(max)

■ Shutdown current 关断电流 0.7μA(typ)

■ Supply voltage range 输入电压 2.0V to 5.5V

■ Stereo headphone amplifier mode 立体声耳机放大器模式

■ “Click and pop” suppression circuitry

■ Unity-gain stable

■ Thermal shutdown protection circuitry 热关断保护巴黎人手机版网址

■ SOIC, TSSOP, exposed-DAP TSSOP, and LLP packages

Applications:

■ Multimedia monitors 多媒体监视器

■ Portable and desktop computers 便携式计算机&台式计算机

■ Portable televisions 便携式电视

替换参考:LM4863