Philips TDA1597 - Manual (Page 11)

1997 Feb 27 11
Philips Semiconductors Product specification
IF amplifier/demodulator for FM radio receivers TDA1597
Fig.5 FM-MUTE-ON: Audio signal and noise as functions of the input signal V
iIF
(pin 20) with
∆
f =
±
22.5 kHz;
f
m
= 1 kHz; de-emphasis 50
µ
s.
(1) Audio signal.
(2) Noise.
0
10
− 6
10
− 5
10
− 4
10
− 3
10
− 2
10
− 1
1
MBE519
− 20
−
40
− 60
− 80
−
100
Vi20 (rms) (V)
V4
(dB)
(1)
(2)
Fig.6 FM-MUTE-OFF: Audio signal and noise as functions of the input signal V
iIF
(pin 20) with
∆
f =
±
22.5 kHz;
f
m
= 1 kHz; de-emphasis 50
µ
s.
(1) Audio signal.
(2) Noise.
handbook, full pagewidth
20
V4
(dB)
− 20
− 40
− 60
− 80
0
MEH071
10
− 6 10
− 5 10
− 4 10
− 3 10
− 2 10
− 1 1
(1)
(2)
Vi20 (rms) (V)