ICs for FM/AM Tuner
1
AN7261FBQ
FM multiplex reception IC
n Overview
The AN7261FBQ is an FM-multiplex reception IC
including a front-end and an IF block for FM tuner. Since
the receiving circuit of FM multiplex signal is integrated
on a single chip, it is most suitable for saving the space of
sets.
n Features
• A single chip IC for an FM-multiplex tuner block, which
was conventionally composed of two ICs.
• Fewer external components
• Can be used for 15 MHz IF
n Applications
• VICS, RDS
LQFP032-P-0707
Unit : mm
7.0±0.3
(0.55)
1.4±0.2
0.625±0.100
0.625±0.100
0.1±0.1
9.2±0.4
7.0±0.3
0.8
9.2±0.4
0.3
+0.10 –0.05
0.15
+0.10 –0.05
18
24 17
9
16
32
25
n Block Diagram
25
V
REF
V
REF
26
GND1
27
28
29
V
C
30
31
32
16
AFC
15
SD adj.
14
Det.
13
12
11
GND2
10
OSC
9
AGC
1 2 3 4 5
ADX
6
RF in
7
V
CC2
8
N.C.
24
Band
23
V
C
adj.
22 21
Mute adj.
20 19 18
V
CC1
17
Mute
IF
det.
Mix.
OSC
AGC
amp.
IF
amp.
Band det.
SD
IF counter
IF
limiter
Level
det.