Philips TDA1597 - Manual (Page 12)

1997 Feb 27 12
Philips Semiconductors Product specification
IF amplifier/demodulator for FM radio receivers TDA1597
0
10
− 6 10
− 5 10
− 4 10
− 3 10
− 2 10
− 1 1
MBE520
− 20
− 40
− 60
−
80
− 100
Vi20 (rms) (V)
V4
(dB)
(1)
(2)
Fig.7 FM-MUTE-ON: Typical AM suppression as a function of the input signal V
iIF
(pin 20) with
∆
f =
±
22.5 kHz;
f
m
= 1 kHz; AM with f
m
= 400 Hz; m = 0.3 and 250 to 15000 Hz bandwidth.
(1) Audio signal.
(2) Spurious AM signal.
Fig.8 FM-MUTE-OFF: Typical AM suppression as a function of the input signal V
iIF
(pin 20) with
∆
f =
±
22.5 kHz;
f
m
= 1 kHz; AM with f
m
= 400 Hz; m = 0.3 and 250 to 15000 Hz bandwidth.
(1) Audio signal.
(2) Spurious AM signal.
handbook, full pagewidth
20
V4
(dB)
− 20
− 40
− 60
− 80
0
MEH073
10
− 6 10
− 5 10
− 4 10
− 3 10
− 2 10
− 1 1
(1)
(2)
Vi20 (rms) (V)