ICs for Audio Common Use
1
Publication date: December 2001 SDC00029BEB
AN7504SB
Pre-amp. and power amp. IC for 1.5 V headphone stereo
a73 Overview
The AN7504SB is a low voltage operation headphone
amp. IC for headphone C-cassette stereo. It incorporates
tape selector, pre-amp. , soft AGC bass-boost circuit, etc.
a73 Features
• Low voltage operation (0.98 V to 2.0 V)
• Tape selector switch built-in
• Low frequency boost function with soft AGC
a73 Applications
• Headphone stereo
a73 Block Diagram
SSOP028-P-0375A
Unit: mm
0.3
±
0.1
0.1
±
0.1
(0.4)
2.05
±
0.2
0.9
±
0.1
0
.9
±
0.1
0.2
+
0.1
−
0.05
1
11.6
±
0.3
9.3±0.3
7.2±0.3
14
28
15
0.8
12
8
Pre-in (R)
V
REF
Pre-in (L)
Pre-out (R) Lo
w BST
T
ape-select
Pre-out (L) PWR-in (L) PWR-in (R)
V
RPF
PWR-out (L)
V
CCP
PWR-out (R)
REV/FWD/
Pre-mute
STB/PWR mute
GND
2
27
3
26
4
25
5
24
6
23
7
22
8
21
9
20
10
19
11
18
12
17
13
16
14
15
Control
FWD/REV
Pre-mute
Ripple filterBias
AGC
Note) The package of this product will be changed
to lead-free type (SSOP028-P-0375E). See the
new package dimensions section later of this
datasheet.