TDA5731M Datasheet, PDF (9/17 Pages) NXP Semiconductors – Low power VHF, UHF and hyperband mixer/oscillator for TV and VCR 3-band tuners

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 f_i < 180 MHz.
b) RF voltage level = 107.5 dBµV at f_i = 180 to 225 MHz.
c) RF voltage level = 97 dBµV at f_i = 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 f_R = 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 f_R = 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