TDA5731M/C1 데이터 시트보기 (PDF) - Philips Electronics

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TDA5731M/C1

Low power VHF, UHF and hyperband mixer/oscillator for TV and VCR 3-band tuners

Philips Electronics 

Philips Semiconductors

Low power VHF, UHF and hyperband

mixer/oscillator for TV and VCR 3-band tuners

Product specification

TDA5731M

9. The input level of a N + 5 − 1 MHz signal which gives a signal 30 dB below the oscillator carrier at the LO output.

10. Measured at 50 Ω with the following RF input voltages;

a) RF voltage level = 120 dBµV at fi < 180 MHz.

b) RF voltage level = 107.5 dBµV at fi = 180 to 225 MHz.

c) RF voltage level = 97 dBµV at fi = 225 to 860 MHz.

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 fR = 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 dia. = 0.5 mm)

l1 = rigid cable (RIM): 5 cm long

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

(b) For fR = 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 = 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.3 Input circuit for optimum noise figure.

1995 Mar 21

9

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