Panasonic AN7261FBQ Datasheet
ICs for FM/AM Tuner
AN7261FBQ
FM multiplex reception IC
■ 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.
■ 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
■ Applications
• VICS, RDS
■ Block Diagram
adj.
C
Band23V
V
REF
GND1
25
26
24
V
REF
22
Mute adj.
21
20
IF
det.
19
24 17
25
32
18
0.1±0.1
7.0±0.3
9.2±0.4
LQFP032-P-0707
CC1
V
18
17
16
AFC
Mute
15
SD adj.
Unit : mm
16
–0.05
+0.10
0.3
7.0±0.3
0.8
9
–0.05
+0.10
0.15
(0.55)
0.625±0.100 0.625±0.100
9.2±0.4
1.4±0.2
27
IF
limiter
28
29
V
C
30
Level
det.
AGC
Band det.
SD
IF counter
14
13
12
11
Det.
GND2
amp.
31
10
OSC
OSC
1
IF
amp.
8
N.C.
9
AGC
Mix.
2
3
4
5
6
7
CC2
RF in
V
ADX
32
1
AN7261FBQ ICs for FM/AM Tuner
■ Pin Descriptions
Pin No. Description
1 1st IF input
2 GND for 1st IF input
3 Mixer output 1
4 Mixer output 2
5 PIN diode driver
6 Mix. Input
7V
CC2
8N.C.
9 AGC output
10 OSC buffer output
11 GND2
12 OSC
13 SD/IF counter output
14 Detection output
15 SD sensitivity adjustment
16 AFC voltage output
Pin No. Description
17 Higher freguency correction adjustment
18 V
CC1
19 FM detection
20 2nd IF output
21 Mute adjustment
22 Mute voltage output
23 Control voltage adjustment
24 Band mute SW/band signal output
25 V
REF
26 GND1
27 2nd IF input
28 GND for 2nd IF input
29 Control voltage output
30 Keyed-AGC input
31 AGC sensitivity adjustment
32 1st IF output
■ Absolute Maximum Ratings
Parameter Symbol Rating Unit
Supply voltage V
Supply current I
2
Power dissipation
Operating ambient temperature
Storage temperature
Note)*1: Ta = 25°C except power dissipation, operating ambient temperature and storage temperature.
2: Ta = 80°C
*
*
1
*
1
*
CC
CC
P
D
T
opr
T
stg
9.1 V
66 mA
343.6 mW
−30 to +80 °C
−55 to +150 °C
■ Recommended Operating Range
Parameter Symbol Range Unit
Supply voltage V
CC
7.2 to 9.0 V
2
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