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TDA7000

FM radio circuit

Philips Electronics 

Philips Semiconductors

FM radio circuit

Product specification

TDA7000

Fig.3 A.F output voltage (Vo) and total harmonic distortion (THD) as a function of the e.m.f. input voltage (EMF)

with a source impedance (RS) of 75 Ω: (1) muting system enabled; (2) muting system disabled.

Conditions:

0 dB = 75 mV; frf = 96 MHz.

for S + N curve: ∆f = ± 22,5 kHz; fm = 1 kHz.

for THD curve; ∆f = ± 75 kHz; fm = 1 kHz.

Notes

1. The muting system can be disabled by feeding a current of about 20 µA into pin 1.

2. The interstation noise level can be decreased by choosing a low-value capacitor at pin 3. Silent tuning can be

achieved by omitting this capacitor.

May 1992

6

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