AN7531SA Datasheet, PDF (1/10 Pages) Panasonic Semiconductor – Headphone amplifier IC for portable equipment

ICs for Audio Common Use
AN7531SA
Headphone amplifier IC for portable equipment
I Overview
AN7531SA is an audio signal processing IC in
which bass boost amplifiers, ALC circuit and beep
circuit are built in the headphone amplifiers for use
in portable equipment. Its headphone output block
is using the center amplifier method which elimi-
nates the need for coupling capacitor so that the
circuit is most suitable for rationalization of audio
circuit.
7.8±0.3
24
13
1
12
Unit: mm
(0.5)
I Features
• Output coupling capacitor is not required (Center
amplifier method)
• Built-in bass boost amplifiers
• ALC circuit
• Built-in mute circuit
• Built-in beep circuit
• With mixed output pin of power amplifier
I Applications
• Portable CD and MD players, etc.
(0.625)
0.65
0.22^{+–00..015}
Seating plane
SSOP024-P-0300B
Note) The package of this product will be changed to lead-free type
(SSOP024-P-0300E). See the new package dimensions section
later of this datasheet.
I Block Diagram
BST
SW
Bias
Standby Mute
SW SW
Beep
ATT
SW
C-amp.
SW
ALC
det.
Publication date: December 2001
SDC00038CEB
1