TDA5736 Просмотр технического описания (PDF) - Philips Electronics

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TDA5736

TDA5736; TDA5737 5 V VHF, hyperband and UHF mixers/oscillators for TV and VCR 3-band tuners

Philips Electronics 

Philips Semiconductors

5 V VHF, hyperband and UHF mixers/oscillators

for TV and VCR 3-band tuners

Product specification

TDA5736; TDA5737

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)

I1 = 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

I2 = semi rigid cable (RIM): 30 cm long

I3 = 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.

handbook, full pagewidth

NOISE

SOURCE

BNC

RIM

INPUT

CIRCUIT

(see Fig. 5)

AIN IFOUT1

D.U.T.

GND IFOUT2

TR

NOISE

METER

2x5

turns

2

turns

N1/N2 = 5

MBH046

NF = NFmeas − loss (input circuit) dB.

Fig.6 Noise figure measurement in band A.

1997 Feb 24

11

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