TDA1572T Philips Semiconductors, TDA1572T Datasheet - Page 11

• Manufacturer Part Number: TDA1572T
• Description: AM receiver
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Note
1. AF signals at the IF output will be suppressed by a coupling capacitor to the demodulator and by full wave-detection
May 1992
I
I
1(osc)
1(2osc)
2IF
3IF
IF
IF
AM receiver
Fig.3
SYMBOL
in the demodulator.
AF output as a function of RF input in the
circuit of Fig.1; f
m = 30%.
Unwanted signals
Suppression of IF whistles at
IF suppression at RF input;
Residual oscillator signal at mixer output;
V
of m = 30%
at f
at f
for symmetrical input
for asymmetrical input
at f
at 2
i
= 15 V; m = 0% related to AF signal
i
i
osc
2
3
f
osc
i
= 1 MHz; f
f
f
IF
IF
PARAMETER
m
= 400 Hz;
11
Fig.4
Total harmonic distortion and (S + N)/N as
functions of RF input in the circuit of Fig.1;
m = 30% for (S + N)/N curve and m = 80%
for THD curve.
MIN.
37
44
40
40
1
1.1
TYP.
Product specification
MAX.
TDA1572T
dB
dB
dB
dB
A
A
UNIT