1997 Feb 27
10
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
TDA1597
Fig.4 Test circuit.
The pin numbers given in parenthesis refer to the TDA1597.
switch S4 (MODE):
(1) FM-MUTE-OFF.
(2) FM-MUTE-ON.
(3) FM-OFF.
handbook, full pagewidth
MED832
(1)
1
(2)
2
(3)
3
20
(18)
(4)
4
(5)
5
(6)
6
(7)
7
S4
100
nF
(1)
(3)
(2)
(8)
8
(9)
10
11
(10)
12
+
5 V
STOP-1
STOP-0
Vmute
13
(11)
14
(12)
15
(13)
16
(14)
17
(15)
9
n.c.
n.c.
level (weighted)
level (unweighted)
VoAF (unweighted)
VoAF (weighted)
Vref (3.7 V)
10
Ω
220 k
Ω
3.9 k
Ω
10 k
Ω
S3
S2
4.7
nF
100 nF
(
+
8.5 V)
VP
S1
3.3
k
Ω
100
pF
220
nF
47
nF
22 nF
IF = 10.7 MHz
22 nF
R1
150
Ω
R2
50
Ω
27
k
Ω
18
(16)
19
(17)
27
k
Ω
IF
QL = 19
TDA1597T