TDA5732 查看數據表（PDF） - Philips Electronics
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TDA5732 Datasheet PDF : 18 Pages
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Philips Semiconductors
Low power VHF, UHF mixer/oscillator
for TV and VCR 2-band tuners
Preliminary specification
TDA5732M
handbook, full pagewidth
Vmeas V
wanted
input signal
50 Ω source
ew
unwanted
input signal
50 Ω source
eu
A
C
HYBRID
B
D
wanted
input
signal
50 Ω
50 Ω
RMS
voltmeter
A IN
IF
out
D.U.T.
A IN
MBE288
25 Ω
Vout 50 Ω
modulation analyzer
(unwanted AM on
the output wanted
frequency)
Wanted input signal = 80 dBµV; Zi >> 50 Ω ≥ wanted input signal = 2Vmeas; unwanted input signal modulated with 30% AM;
VoA(IF) = unwanted output signalVo when the output wanted signal is modulated with 0.3% AM.
Fig.5 Band A 1% cross modulation.
handbook, full pagewidth
wanted
input signal
50 Ω source
ew
unwanted
input signal
50 Ω source
eu
A
C
HYBRID
B
D
wanted
input
V
signal
50 Ω
RMS
voltmeter
A
C
HYBRID
C IN
IF
out
D.U.T.
B
D
50 Ω
50 Ω
C IN
MBE287
25 Ω
Vout 50 Ω
modulation analyzer
(unwanted AM on
the output wanted
frequency)
Wanted input signal = 70 dBµV; unwanted input signal modulated with 30% AM; VoA(IF) = unwanted output signal Vo when the
output wanted signal is modulated with 0.3% AM.
Fig.6 Band C 1% cross modulation.
1995 Mar 22
10
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