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1997 Feb 27 4
Philips Semiconductors Product specification
IF amplifier/demodulator for FM radio receivers TDA1597
PINNING
SYMBOL
PIN
DESCRIPTION
DIP18 SO20
V
P
1 1 supply voltage (+8.5 V)
LVA 2 2 level adjustment for stop condition
ULV 3 3 unweighted level output/K2 adjustment
V
oAF
4 4 audio frequency output (MPX signal)
V
ref
5 5 reference voltage output
WLV 6 6 weighted level output
MODE 7 7 mode switch input
DDV 8 8 detune detector voltage
n.c. − 9 not connected
DEMI1 9 10 demodulator input 1
DEMI2 10 11 demodulator input 2
n.c. − 12 not connected
TSW 11 13 tau switch input
ST1 12 14 STOP-1, stop pulse output 1
ST0 13 15 STOP-0, stop pulse output 0
MUTE 14 16 muting voltage
GND 15 17 ground (0 V)
LFB1 16 18 IF limiter feedback 1
LFB2 17 19 IF limiter feedback 2
V
iIF
18 20 IF signal input
Fig.2 Pin configuration (DIP version).
handbook, halfpage
TDA1597
MED830
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
V
P
LVA
ULV
WLV
MODE
DDV
DEMI1
V
oAF
V
ref
V
iIF
DEMI2
TSW
ST1
ST0
MUTE
GND
LFB1
LFB2
Fig.3 Pin configuration (SO version).
handbook, halfpage
TDA1597T
MED831
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
P
LVA
ULV
WLV
MODE
DDV
n.c.
DEMI1
V
oAF
V
ref
V
iIF
n.c.
DEMI2
TSW
ST1
ST0
MUTE
GND
LFB1
LFB2