IS31AP4912

THD+N 0.024%
Status Prod
Vdd(V) 2.7~5.5
ICC(mA) 5.0
ISD(uA) 1.0
Channels 2
Document Eval Board
PSRR(dB) 95
Power Mw 30
Pkg-Pin(mm) UTQFN-12(2x2)
Product Family 31 = Commercial/Industrial Analog
Part Number 4912 = 4912
Product Type AP = Audio Power Amplifier
Package option blank = Tray or Tube

IS31AP4912 Features

  • 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

Overview

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.

 

Related Part Number(s)

Description Stock Qty Available Qty
IS31AP4912-UTLS2-TR 12,000