1997 Feb 27 10Philips 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-1STOP-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 kΩ
3.9 kΩ
10 kΩ
S3S2 4.7
nF
100 nF
(+8.5 V)
VPS1
3.3
kΩ
100
pF
220
nF
47
nF
22 nF
IF = 10.7 MHz
22 nF
R1
150 Ω
R2
50 Ω
27
kΩ
18
(16)
19
(17)
27
kΩ
IF
QL = 19