TDA1572 데이터 시트보기 (PDF) - Philips Electronics

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TDA1572

AM receiver circuit

Philips Electronics 

Philips Semiconductors

AM receiver circuit

Product specification

TDA1572

Fig.9 AF output as a function of RF 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, V’rfu): fi = 900 kHz; fm = 400 Hz; m = 30%.

Effective selectivity of input tuned circuit = 21 dB.

December 1987

12

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