tda6503a NXP Semiconductors, tda6503a Datasheet - Page 27

• Manufacturer Part Number: tda6503a
• Description: 5 V Mixers/oscillators And Synthesizers For Cable Tv And Vcr 2-band Tuners
• Manufacturer: NXP Semiconductors

Philips Semiconductors
2001 Aug 22
handbook, full pagewidth
5 V mixers/oscillators and synthesizers for
cable TV and VCR 2-band tuners
V
Wanted output signal at f
Measuring the level of the unwanted output signal V
f
Filter characteristics: f
OSC
o
e w
e u
= V
= 413 (847) MHz.
meas
50
50
50
------------------ -
50
+
AM = 30%
unwanted
27
wanted
source
source
2 kHz
signal
signal
c
= 45.75 MHz, f
RF(w)
= 367.25 (801.25) MHz; V
B
A
HYBRID
C
D
50
Fig.18 Cross modulation measurement in UHF band.
3dB(BW)
= 1.4 MHz, f
50
o(u)
HYBRID
causing 0.3% AM modulation in the wanted output signal; f
A
B
o(w)
30dB(BW)
= 100 dB V.
C
D
= 3.1 MHz.
UHFIN
UHFIN
27
D.U.T.
IFOUT
V o
27
voltmeter
RMS
V
TDA6502; TDA6502A;
TDA6503; TDA6503A
attenuator
V meas
18 dB
RF(u)
= 371.25 (805.75) MHz.
45.75 MHz
FILTER
Product specification
modulation
analyzer
50
FCE583