TDA5630T 데이터 시트보기 (PDF) - Philips Electronics

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TDA5630T

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

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

Zin (AIN) >> 50 Ω => Vi = 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) = 20 log (V’meas/Vmeas) + 9.4 dB.

Fig.4 Gain measurement in band A.

handbook, full pagewidth

BNC C1

L1

I1

PCB

plug

C2

RIM-RIM

(a)

I3

PCB

BNC C3

I2

plug

RIM-RIM

C4

(b)

MBE286 - 1

(a) For fRF = 50 MHz:

mixer A frequency response measured = 57 MHz, loss = 0 dB

image suppression = 16 dB

C1 = 9 pF

C2 = 15 pF

L1 = 7 turns (diam. = 5.5 mm, wire diam. = 0.5 mm)

l1 = semi rigid cable (RIM): 5 cm long

(semi rigid cable (RIM); 33 dB/100 m; 50 Ω; 96 pF/m).

(b) For fRF = 180 MHz:

mixer A frequency response measured = 150.3 MHz, loss = 1.3 dB

image suppression = 13 dB

C3 = 5 pF

C4 = 25 pF

l2 = semi rigid cable (RIM): 30 cm long

l3 = semi rigid cable (RIM): 5 cm long

(semi rigid cable (RIM); 33 dB/100 m; 50 Ω; 96 pF/m).

Fig.5 Input circuit for optimum noise figure in band A.

1996 Mar 21

10

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