IS31AP4913 Datasheet, PDF (1/11 Pages) Integrated Silicon Solution, Inc – 3D AND BASS ENHANCEMENT STEREO HEADPHONE DRIVER

IS31AP4913
3D AND BASS ENHANCEMENT STEREO HEADPHONE DRIVER
December 2011
GENERAL DESCRIPTION
The IS31AP4913 is a stereo headphone driver
designed to allow the removal of the output
DC-blocking capacitors for reduced component count
and cost. The IS31AP4913 is ideal for small portable
electronics where size and cost are in concerns.
The IS31AP4913 also features 3D and bass
enhancement which can be externally adjusted by a
simple RC network.
IS31AP4913 is available in QFN-20 (3mm × 3mm)
packages. It operates from 2.7V to 5.5V over the
temperature range of -40°C to +85°C.
FEATURES
 No output DC-blocking capacitors
 Bass enhancement
 3D enhancement
 Low output noise (8µV)
 High SNR (102dB)
 -92dB PSRR
 Pulse Count Control serial interface
 Thermal protection circuit
 Integrated click-and-pop suppression circuitry
 QFN-20 (3mm × 3mm) package
APPLICATIONS
 Cellular handsets and PDAs
 Notebook PC
 MP3
 Portable gaming
TYPICAL APPLICATION CIRCUIT
Audio In
CR_IN
0.47 F
RR_IN
30k
Mode Control
Audio In
CL_IN
0.47 F
RL_IN
30k
6.8pF
RR_F1
20k
RR_F3
120k
1
RR_F2
20k
20
INFR
BASSR
14
OUTR
CR_B RR_B
22nF 510k
VBattery
2
INR
12
VCC
18
VSS
13
VREF
17
PGND
10
SGND
4.7 F
0.1 F
3
IS31AP4913 3DR
11
CTRL
4
3DL
100k
5
INL
19
CN
16
CP
4.7 F 2.2 F
R3D
4.7k
C3D
47nF
2.2 F
CL_B RL_B
22nF 510k
6
BASSL
RL_F1
20k
INFL
15
OUTL
7
RL_F3
120k
RL_F2
20k
6.8pF
Figure 1 Typical Application Circuit
Note: The SGND and PGND pins of the IS31AP4913 must be routed separately back to the decoupling capacitor in order to provide proper
device operation. If the SGND and PGND pins are connected directly to each other, the part will function without the risk of failure, but the noise
and THD performance do not meet the specifications.
Integrated Silicon Solution, Inc. – www.issi.com
1
Rev.A, 11/17/2011