參數(shù)資料
型號(hào): TDA6501
廠商: NXP Semiconductors N.V.
英文描述: 5 V mixer/oscillator and synthesizer for PAL and NTSC standards
中文描述: 5 V型混合機(jī)/振蕩器和合成器PAL和NTSC制式標(biāo)準(zhǔn)
文件頁(yè)數(shù): 30/37頁(yè)
文件大?。?/td> 223K
代理商: TDA6501
9397 750 15057
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02 — 14 June 2005
30 of 37
Philips Semiconductors
TDA6500; TDA6501
5 V mixer/oscillator and synthesizer for PAL and NTSC standards
V
o
= V
meas
×
= V
meas
+ attenuation
Wanted output signal at f
RFpix
; V
o
= 100 dB
μ
V.
Unwanted output signal at f
RFpix
+ 5.5 MHz.
The level of unwanted signal is measured by causing 0.09 % AM modulation in the wanted signal.
PAL: IF = 38.9 MHz; L = 680 nH; C = 25.9 pF and attenuation = 10.2 dB
Fig 15. Cross modulation measurement in mid and high bands
fce829
50
50
50
50
50
MHBIN1
MHBIN2
IFOUT
RMS
voltmeter
V
o
DUT
A
B
C
D
HYBRID
A
B
C
D
HYBRID
C
L
e
u
unwanted
signal
source
e
w
wanted
signal
source
AM = 30%
2 kHz
V V
meas
12 dB
attenuator
FILTER
38.9 MHz
(PAL & OFDM)
50
2
L
2
ω
2
+
-------------------------------
Loss in hybrid = 1 dB.
V
i
= V
meas
loss.
PAL: IF = 38.9 MHz; L = 680 nH; C = 25.9 pF
Fig 16. Maximum RF input level without lock-out in mid and high bands
V
i
50
50
50
V
MHBIN1
MHBIN2
IFOUT
V
meas
RMS
voltmeter
DUT
signal
source
A
B
C
D
HYBRID
e
fce220
50
spectrum
analyzer
C
L
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