TDA7021 Просмотр технического описания (PDF) - Philips Electronics

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TDA7021

FM radio circuit for MTS

Philips Electronics 

Philips Semiconductors

FM radio circuit for MTS

Product specification

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)

VP = 3 V; Tamb = 25 °C; measured in Fig.8; frf = 96 MHz modulated with pilot ∆f = ± 6,75 kHz and AF signal

∆f = ±22,5 kHz; fm = 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

CONDITIONS

SYMBOL MIN. TYP. MAX. UNIT

see Fig.8; pilot off

EMF

−

11

−

µV

see Fig.9; no modulation

S+300

−

40

−

dB

S−300

−

22

−

dB

(S+N)/N −

50

−

dB

Vi = L-signal; fm = 1 kHz; pilot on:

at frf = 97 MHz

α

at frf = 87,5 MHz and 108 MHz α

−

26

−

dB

−

14

−

dB

May 1992

7

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