7XNS-A7518DY 데이터 시트보기 (PDF) - Philips Electronics

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7XNS-A7518DY

AM receiver circuit

Philips Electronics 

Philips Semiconductors

AM receiver circuit

Product specification

TDA1072A

Fig.9 A.F. output as a function of r.f. input using the circuit of Fig.8 with that of Fig.1.

Fig.10 Suppression of cross-modulation as a function of input signal, measured in the circuit of Fig.8 with the input

circuit as shown in Fig.11. Curve is for Wanted Vo(af)/Unwanted Vo(af) = 20 dB; Vrfw, Vrfu are signals at the

aerial input, V'aew, V'aeu are signals at the unloaded output of the aerial.

Wanted signal (V'aew, Vrfw): fi = 1 MHz; fm = 400 Hz; m = 30%.

Unwanted signal (V'aeu, Vrfu): fi = 900 kHz; fm = 400 Hz; m = 30%.

Effective selectivity of input tuned circuit = 21 dB.

May 1984

11

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