1997 Feb 27
16
Philips Semiconductors
Product specification
IF amplifier/demodulator for FM radio receivers
TDA1597
Fig.16 Level output voltage V
3
dependent on input signal V
iIF
(pin 20); typical adjusting range.
(1) V
2
= 0 V.
(2) I
2
= 0 mA.
(3) V
2
= V
ref
.
10
0
10
−
6
10
−
5
10
−
4
10
−
3
10
−
2
10
−
1
1
MBE517
2
4
6
8
Vi20 (rms) (V)
(V)
V3
(1)
(2)
(3)
Fig.17 Total harmonic distortion dependent on detuning at FM-MUTE-ON;
∆
f =
±
75 kHz; f
m
= 1 kHz;
V
iIF
= 10 mV.
handbook, full pagewidth
0.5
0
−
80
−
60
−
40
−
20
0
20
40
60
80
MBE518
0.1
0.2
0.3
0.4
detune (kHz)
THD
(%)
