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參數資料
型號: 935261234118
廠商: NXP SEMICONDUCTORS
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PDSO28
封裝: PLASTIC, SOT-341, SSOP-28
文件頁數: 17/44頁
文件大小: 241K
代理商: 935261234118
2000 Jan 24
24
Philips Semiconductors
Product specication
5 V mixers/oscillators and synthesizers for
cable TV and VCR 2-band tuners
TDA6402; TDA6402A;
TDA6403; TDA6403A
Fig.16 Gain (Gv) measurement in UHF band.
Loss (in hybrid) = 1 dB.
Vi =Vmeas loss (in hybrid) = 70 dBV.
Vo =V’meas ×
Gv = 20 log
50
22
+
50
-------------------
V
o
V
i
------
handbook, full pagewidth
MGE701
UHFIN2
Vi
50
22
50
50
V
UHFIN1 IFOUT
e
Vmeas
RMS
voltmeter
spectrum
analyzer
Vo
D.U.T.
V'meas
signal
source
50
A
B
C
D
HYBRID
Fig.17 Noise figure (NF) measurement in bands UHF.
Loss (in hybrid) = 1 dB.
NF = NFmeas loss (in hybrid).
handbook, full pagewidth
MGE702
22
UHFIN
IFOUT
D.U.T.
NOISE
SOURCE
NOISE
FIGURE
METER
50
A
B
C
D
HYBRID
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