IS31AP2010E
MONO FILTER-LESS CLASS-D AUDIO POWER AMPLIFIER
Advanced Information May 2012 GENERAL DESCRIPTION The IS31AP2...
IS31AP2010E
MONO FILTER-LESS CLASS-D AUDIO POWER AMPLIFIER
Advanced Information May 2012 GENERAL DESCRIPTION The IS31AP2010E is a high efficiency, mono filter-less class-D audio power amplifier. A low noise, filter-less PWM architecture eliminates the output filter, reduces external component count, system cost, and simplifying design. In cellular handsets, the earpiece, speaker phone, and melody ringer speaker can each be driven by the IS31AP2010E. The gain of IS31AP2010E is externally configurable which allows independent gain control from multiple sources by summing signals from each function. IS31AP2010E is available in UTQFN-9 packages. It operates from 2.7V to 5.5V over the temperature range of -40°C to +85°C. FEATURES Supply
voltage from 2.7V ~ 5.5V High efficiency Less than 1μA shutdown current Optimized PWM output stage eliminates LC output filter Fully differential design reduces RF rectification and eliminates bypass capacitor Improved CMRR eliminates two input coupling
capacitors Integrated click-and-pop suppression circuitry UTQFN-9 package RoHS compliant and 100% lead(Pb)-free
APPLICATIONS TYPICAL APPLICATION CIRCUIT
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Wireless or cellular handsets and PDAs Portable DVD player Notebook PC Portable radio Educational toys Portable gaming
VBattery
CS 1 F CIN0.1 F
B1,B2
0.1 F
VCC C3 A3
RIN150k
OUT+ C1 A1 OUT-
Differential Input
CIN+ 0.1 F RIN+ 150k
IN-
IN+
IS31AP2010E
Shutdown Control
100k
Figure 1
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