TDA5736 Просмотр технического описания (PDF) - Philips Electronics

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TDA5736

TDA5736; TDA5737 5 V VHF, hyperband and UHF mixers/oscillators for TV and VCR 3-band tuners

Philips Electronics 

Philips Semiconductors

5 V VHF, hyperband and UHF mixers/oscillators

for TV and VCR 3-band tuners

Product specification

TDA5736; TDA5737

7. The frequency drift is defined as the change in oscillator frequency when the ambient temperature varies from

Tamb = 25 to 0 °C and from Tamb = 25 to 50 °C.

8. Switch-on drift is defined as the change in oscillator frequency between 5 s and 15 mins after switch on.

9. With thermal compensation, the capacitors of the tank circuits have the following temperature coefficients:

a) In band A: C1, C6 and C8 are N750.

b) In band B: C4, C11, C12, C13 and C36 are N750.

c) In band C: C5, C7, C9 and C10 are N750; C2 is N220 and C3 is NP0.

10. SRF: spurious signal on LO with respect to LO output signal:

a) RF level = 120 dBµV at fRF < 180 MHz.

b) RF level = 107.5 dBµV at fRF = 180 to 225 MHz.

c) RF level = 97 dBµV at fRF = 225 to 860 MHz.

handbook, full pagewidth

signal

50 Ω source

e

V meas V

AIN

IF

out

50 Ω Vi

D.U.T.

RMS

voltmeter

GND

IF

out

TR

Vo

2x5

turns

2 V'meas

turns

N1/N2 = 5

spectrum

analyzer

50 Ω

MGD264

ZI (AIN) >> 50 Ω V i = 2 × Vmeas.

Vi = Vmeas + 6 dB.

Vo = V’meas + 15.4 dB (transformer ratio N1/N2 = 5 and transformer loss).

Gv = 20 log (Vo/Vi).

Fig.4 Band A gain measurement.

1997 Feb 24

10

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