TDA5631 Просмотр технического описания (PDF) - Philips Electronics

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TDA5631

9 V VHF, hyperband and UHF mixer/oscillator for TV and VCR 3-band tuners

Philips Electronics 

Philips Semiconductors

9 V VHF, hyperband and UHF

mixer/oscillator for TV and VCR 3-band tuners

Product specification

TDA5630;

TDA5631

signal

handbook, full pagewidth50 Ω source

e

Vmeas V

50 Ω

50 Ω

RMS

voltmeter

AC

HYBRID

BD

BIN1

(CIN1) IFOUT1

Vi D.U.T.

BIN2

(CIN2)

IFOUT2

TR

Vo

2x5

turns

2 V'meas

turns

N1/N2 = 5

spectrum

analyzer

50 Ω

MBH048

Loss of the hybrid: 0.8 to 1 dB depending on frequency.

Vi = Vmeas − loss of the hybrid.

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

Gv = 20 log (Vo/Vi) = 20 log (V’meas/Vmeas) + 15.4 dB + loss of the hybrid.

Fig.8 Gain measurement in bands B and C.

handbook, full pagewidth

NOISE

SOURCE

AC

HYBRID

50 Ω

BD

BIN1

(CIN1)

IFOUT1

D.U.T.

BIN2

(CIN2) IFOUT2

TR

NOISE

METER

2x5

turns

2

turns

N1/N2 = 5

MBH049

Loss of the hybrid: 0.8 to 1 dB depending on frequency.

NF = NFmeas − loss of the hybrid.

Fig.9 Noise figure measurement in bands B and C.

1996 Mar 21

12

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