IS31AP4912

THD+N 0.024%
狀態 Prod
Vdd(V) 2.7~5.5
ICC(mA) 5.0
ISD(uA) 1.0
通道數 2
文件 Eval Board
PSRR(dB) 95
Power Mw 30
腳位尺寸(mm) UTQFN-12(2x2)
產品系列 31 = Commercial/Industrial Analog
IC代碼 4912 = 4912
產品類別 AP = Audio Power Amplifier
包裝選項 blank = Tray or Tube

IS31AP4912 特徵

  • Supply voltage from 2.7V ~ 5.5V
  • Ultra-low current shutdown mode
  • Ground referenced outputs
  • -95dB PSRR Thermal protect circuit Integrated click-and-pop suppression circuitry - No output DC-blocking capacitors Low output noise (7µV)
  • High SNR (103dB)
  • UTQFN-12 (2mm × 2mm) package
  • Cellular handsets and PDAs
  • Notebook PC
  • MP3

概觀

The IS31AP4912 is a Class-AB stereo headphone inverting amplifier with charge pump controller capable of delivering 30mW into a 32Ω load with less than 0.1% THD+N. The integrated charge pump generates a negative reference voltage to bias the outputs about ground. This eliminates the need for output DC- blocking capacitors resulting in a lower component count and cost. The gain of the amplifier is adjusted via external resistors. The IS31AP4912 integrates click-and-pop suppression circuitry to eliminate speaker noise which would occur during power ON/OFF transitions. It also integrates a thermal protection circuit to shutdown the amplifier if it gets too hot. Setting the SDB pin to a low state will cause the IS31AP4991 to enter a low-power shutdown mode with a quiescent current of less than 1µA. The IS31AP4912 is ideal for small portable electronics where size, battery life and cost are critical design parameters. IS31AP4912 is available in a space saving UTQFN-12 (2mm × 2mm) package. It operates from 2.7V to 5.5V over the temperature range of -40°C to +85°C.

 

相關IC编號

IC 編號 庫存數量 可用數量
IS31AP4912-UTLS2-TR 12,000