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

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7XNS-A7518DY

AM receiver circuit

Philips Electronics 

Philips Semiconductors

AM receiver circuit

PARAMETER

Unwanted signals

Suppression of i.f. whistles at

Vi = 15 µV; m = 0% related to

a.f. signal of m = 30%

at fi ≈ 2 × fif

at fi ≈ 3 × fif

I.F. suppression at r.f. input

for symmetrical input

for asymmetrical input

Residual oscillator signal at mixer output

at fosc

at 2 × fosc

APPLICATION INFORMATION

Product specification

TDA1072A

SYMBOL

MIN. TYP. MAX. UNIT

α2if

α3if

αif

αif

I1(osc)

I1(2osc)

−

37

−

dB

−

44

−

dB

−

40

−

dB

−

40

−

dB

−

1

−

µA

−

1,1

−

µA

(1) Capacitor values depend on crystal type.

(2) Coil data: 9 windings of 0,1 mm dia laminated Cu wire on TOKO coil set 7K 199CN; Qo = 80.

Fig.2 Oscillator circuit using quartz crystal; centre frequency = 27 MHz.

May 1984

8

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