ICs for FM/AM Tuner
1
n Block Diagram
AN7293NFBQ
FM-IF, NC, MPX IC for Car Radio
n Overview
The AN7293NFBQ is an IC having FM-IF, NC and
MPX function for car radio. A tuner block of car radio can
be constructed by this IC and the AN7289NFBQ/NSC.
n Features
• A less number of external components is required (8
components reduction compared with our conventional
IC)
• Neighbering-station interference characteristics im-
provement by band-ATC function
• Band-mute on/off function
• DIL package product (the AN7293NSC) is also available
n Applications
• Car radios
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
Unit: mm
SSOP032-P-0375
F
orced mono
A
TC-Adj.
SEP-Adj.
R-Out L-Out
Mute-Adj. SD-Adj.AFC ST
-Ind.
Mono: high Stereo: lo
w
24 23 22 21 20 19 18 17
1 2 3 4 5 6 7 8
25
26
27
28
29
30
31
32
16
15
14
13
12
11
10
9
V
REF
IF-In
V
S
Out
V
BAND
IF
det.
IF
limiter
Level
det.
Multipath
det.
Band-det.
SD
IF-counter
Mute PNL
Noise
det.
Demod.
VCO
PLL
Pilot
det.
GND
V
REF
V
CC