TDA5636 데이터 시트보기 (PDF) - Philips Electronics

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TDA5636

9 V VHF, hyperband and UHF mixers- oscillators for TV and VCR 3-band tuners

Philips Electronics 

Philips Semiconductors

9 V VHF, hyperband and UHF mixers-

oscillators for TV and VCR 3-band tuners

Product specification

TDA5636; TDA5637

handbook, full pagewidth

signal

source

50 Ω

e

Vmeas V

AIN

IFOUT

27 Ω

50 Ω Vi

D.U.T.

Vo

V'meas

spectrum

analyzer

50 Ω

RMS

voltmeter

GND

MBH466

Zi (AIN) >> 50 Ω ⇒ Vi = 2 × Vmeas.

Vo

=

V’meas

×





5----0---5--+-0----2---7--

.

Gv = 20 log -VV----o-i .

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 (diameter. = 5.5 mm, wire diameter. = 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 = 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 = 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 Jun 10

11

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