IS31AP2031 Datasheet, PDF (1/12 Pages) Integrated Silicon Solution, Inc – CLASS-G AUDIO POWER AMPLIFIER

IS31AP2031
CLASS-G AUDIO POWER AMPLIFIER
WITH INTEGRATED CHARGE PUMP CONVERTER
January 2012
GENERAL DESCRIPTION
The IS31AP2031 is a Class-G audio power amplifier
with automatic gain control. It drives up to 2.0W (10%
THD+N) into an 8Ω speaker from a 4.2V V_DD supply.
The IS31AP2031 provides low cost, space saving
solution for portable equipments which need audio
output with higher power by boosting up supply voltage.
Its external components just include a few capacitors
and resistors (no inductor).
The IS31AP2031 use fully differential design to reduce
RF noise. The IS31AP2031 integrates de-pop circuitry to
reduce pop and click noise during power on/off or
shutdown enable operation. The IS31AP2031 also
integrates thermal and short circuit protection function.
IS31AP2031 is available in QFN-20 (3mm × 3mm)
package. It operates from 2.7V to 4.5V over the
temperature range of -40°C to +85°C.
FEATURES
 Operates from 2.7V to 4.5V
 2.0W into an 8Ω load from a 4.2V supply(10%
THD+N)
 4 gain levels: 12dB, 16dB, 24dB, 27.5dB
 AGC function
 Pulse Count Control serial interface
 8kV HBM ESD
 Thermal and short-circuit protection
 Integrated Click-and-Pop suppression circuitry
 Available in QFN-20(3mm × 3mm) package
APPLICATIONS
 Smart phones
 Cellular phones
 PDAs
 GPS
 Portable electronics
TYPICAL APPLICATION CIRCUIT
VBattery
10 F
VDD
0.1 F
AVIN
0.1 F
10V
10 F
Mode Control
100k
Differential
Input
CIN
22nF
RIN
10k
CIN
22nF
RIN
10k
SDB
CP
CN
IS31AP2031
IN+
OUT
IN-
OUT
FS
100k
GND
Figure 1 Typical Application Circuit (Differential Input)
4.7 F
Integrated Silicon Solution, Inc. – www.issi.com
1
Rev.A, 12/28/2011