TDA5732M Datasheet, PDF (11/18 Pages) NXP Semiconductors – Low power VHF, UHF mixer/oscillator for TV and VCR 2-band tuners

Philips Semiconductors
Low power VHF, UHF mixer/oscillator
for TV and VCR 2-band tuners
Preliminary specification
TDA5732M
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 ( 5.5mm, wire diam. = 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.7 Input circuit for minimum noise figure.
handbook, full pagewidth
DC supply
VP
6.8 kΩ
100 µF
100 µF
ripple
signal
47 Ω
MEASUREMENT
TEST CIRCUIT
OF FIG. 14
to
spectrum
analyser
MBE376
500 kHz ^f o
500 kHz
1995 Mar 22
Fig.8 Measurement set-up for ripple measurement,
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