TDA5633 데이터 시트보기 (PDF) - Philips Electronics

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TDA5633

9 V VHF and UHF mixers/oscillators for TV and VCR cable tuners

Philips Electronics 

Philips Semiconductors

9 V VHF and UHF mixers/oscillators for TV

and VCR cable tuners

Product specification

TDA5632; TDA5633

handbook, full pagewidth

signal

source

50 Ω

e

Vmeas V

A IN

IF

27 Ω

out

50 Ω Vin

D.U.T.

Vout

V'meas

spectrum

analyzer

50 Ω

A IN

RMS

voltmeter

MBH333

Zi >> 50 Ω => Vin = 2Vmeas (Vin = 80 dBµV); Vout = V'meas × 5----0---5--+-0----2---7-- ; voltage gain for band A = 20 log -V-V---o-i--un--t .

Fig.4 Band A gain measurement.

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 (5.5 mm, wire diameter = 0.5 mm).

l1 = rigid cable (RIM): 5 cm long

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

(b) For fRF = 150 MHz:

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

image suppression = 13 dB.

C3 = 5 pF.

C4 = 25 pF.

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

l3 = rigid cable (RIM): 5 cm long

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

Fig.5 Input circuit for minimum noise figure.

1996 Aug 16

8

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