參數(shù)資料
型號: TUA1030
廠商: INFINEON TECHNOLOGIES AG
元件分類: 調(diào)諧器
英文描述: 3-BAND, VIDEO TUNER, PDSO24
封裝: PLASTIC, TSSOP-24
文件頁數(shù): 24/33頁
文件大小: 575K
代理商: TUA1030
Reference
5 - 30
TUA1030
preliminary
Wireless Components
Confidential
Specification, January 2002
5.3
Measurement Circuits
5.3.1
Gain (GV) measurement in LOW band
GVHF25U
s
Zi >> 50 => Vi = 2 x Vmeas = 80 dBV
s
Vi = Vmeas + 6dB = 80 dBV
s
Gv = 20 log(V0 / Vi)
5.3.2
Gain (GV) measurement in MID and HIGH bands
GUHF25U
s
Vi = Vmeas = 70 dBV
s
Gv = 20 log(V0 / Vi) + 1 dB (1 dB = insertion loss of balun)
Device
under
Test
IFOUT
LOWIN
V
i
50
50
V
meas
RMS
Votmeter
50
spectrum
analyser
V
o
Device
under
Test
IFOUT
MID/
HIGHIN
V
i
50
50
V
meas
RMS
Votmeter
Balun
1:1
MID/
HIGHIN
50
spectrum
analyser
V
o
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