TDA6502 datasheet(25/44 Pages) PHILIPS

Part #	TDA6502

Description	5 V mixers/oscillators and synthesizers for cable TV and VCR 2-band tuners

PDF	44 Pages

Scroll/Zoom	100%

Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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25 / 44 page

2000 Mar 16

Philips Semiconductors

Preliminary speciﬁcation

5 V mixers/oscillators and synthesizers for

cable TV and VCR 2-band tuners

TDA6502; TDA6502A;

TDA6503; TDA6503A

handbook, full pagewidth

FCE579

Ω

VHFIN

IFOUT

D.U.T.

NOISE

SOURCE

NOISE

FIGURE

METER

BNC

RIM

INPUT

CIRCUIT

NF = NFmeas − loss (of input circuit) (dB).

Fig.14 Noise figure (NF) measurement in VHF band.

handbook, full pagewidth

FCE580

Ω

45.75 MHz

VHFIN

IFOUT

HYBRID

18 dB

attenuator

Vmeas

RMS

voltmeter

modulation

analyzer

unwanted

signal

source

wanted

signal

source

AM = 30%

2 kHz

FILTER

D.U.T.

Fig.15 Cross modulation measurement in VHF band.

Vo =Vmeas ×

Wanted output signal at fRF(w) = 55.25 (361.25) MHz; Vo(w) = 100 dBµV.

Measuring the level of the unwanted output signal Vo(u) causing 0.3% AM modulation in the wanted output signal; fRF(u) = 59.75 (366.75) MHz.

fOSC = 101 (407) MHz.

Filter characteristics: fc = 45.75 MHz, f−3 dB(BW) = 1.4 MHz, f−30 dB(BW) = 3.1 MHz.

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TDA6502 Datasheet(PDF) 25 Page - NXP Semiconductors

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