Philips Semiconductors
Product specification
FM radio circuit for MTS
TDA7021T
1) The AF output can be decreased by disconnecting the 100 nF capacitor from pin 16.
Fig.5 Test circuit for mono operation.
AC CHARACTERISTICS (STEREO OPERATION)
V
P
= 3 V; T
amb
= 25
°C;
measured in Fig.8; f
rf
= 96 MHz modulated with pilot
∆f
=
±
6,75 kHz and AF signal
∆f
=
±22,5
kHz; f
m
= 1 kHz; EMF = 1 mV (e.m.f. at a source impedance of 75
Ω);
r.m.s. noise voltage measured
unweighted (f = 300 Hz to 20 kHz); unless otherwise specified
PARAMETER
Sensitivity (e.m.f.)
for (S+N)/N = 26 dB
Selectivity
Signal-to-noise ratio
Channel separation
V
i
= L-signal; f
m
= 1 kHz; pilot on:
at f
rf
= 97 MHz
at f
rf
= 87,5 MHz and 108 MHz
α
α
−
−
26
14
−
−
dB
dB
see Fig.8; pilot off
see Fig.9; no modulation
EMF
S
+300
S
−300
(S+N)/N
−
−
−
−
11
40
22
50
−
−
−
−
µV
dB
dB
dB
CONDITIONS
SYMBOL
MIN.
TYP.
MAX.
UNIT
May 1992
7
PHILIPS [ NXP SEMICONDUCTORS ]
