TDA5736M 데이터 시트보기 (PDF) - Philips Electronics

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TDA5736M

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

handbook, full paguenwwidtahnted

signal

50 Ω source

AC

AM = 30%

eu

HYBRID

50 Ω

B

wanted

ew

signal

source

D

50

Ω

AC

VIMB HYBRID

(VIMC)

BD

50

Ω

RFB

IF

(RFC)

out

D.U.T.

RFB

IF

(RFC)

out

Vo

2x5

turns

FILTER

18 dB

attenuator

33.9 MHz

2

V

turns

N1/N2 = 5 RMS

voltmeter

modulation

analyzer

50 Ω

MGE973

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

Wanted output signal at fRFW = 170 or 450 MHz (450 or 860 MHz); Vow = 70 dBµV.

We measure the level of the unwanted signal Vou causing 1% AM modulation in the wanted output signal;

fRFU = 165.5 or 445.5 MHz (445.5 or 855.5 MHz); fOSC = 203.9 or 483.9 MHz (483.9 or 893.9 MHz).

Vou = V’meas + 15.4 dB.

Filter characteristics: fc = 33.9 MHz, f−3dBBW = 1 MHz; f−30dBBW = 2.3 MHz.

Fig.11 Cross modulation measurement in bands B and C.

handbook, full pagewidth

1

2

0.5

5

0.2

10

–j

∞

10 5

2

1

0.5

0.2 40 MHz

0

+j

10

200 MHz

5

0.2

2

0.5

1

MBH055

Fig.12 Input admittance (S11) of the band A mixer input (40 to 200 MHz); Yo = 20 mS.

1997 Feb 24

14

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