參數(shù)資料
型號(hào): TUA6034-T
廠商: INFINEON TECHNOLOGIES AG
英文描述: MB 6C 6#20 SKT PLUG
中文描述: 3波段數(shù)字電視/設(shè)置機(jī)頂盒調(diào)諧器IC
文件頁(yè)數(shù): 55/61頁(yè)
文件大?。?/td> 1281K
代理商: TUA6034-T
Specification
55
V 2.5, 2004-04-28
TUA6034, TUA6036
Reference
4.5
Measurement Circuits
4.5.1
Gain (G
V
) measurement in LOW band
Figure 10
Gain (G
V
) measurement in LOW band
Z
i
>> 50
=> V
i
= 2 x V
meas
= 80 dBμV
V
i
= V
meas
+ 6dB = 80 dBμV
V
0
= V’
meas
+ 16 dB (transformer ratio N1:N2 and transformer loss)
G
v
= 20 log(V
0
/ V
i
)
4.5.2
Gain (G
V
) measurement in MID and HIGH bands
Figure 11
Gain (G
V
) measurement in MID and HIGH bands
V
i
= V
meas
= 70 dBμV
V
0
= V’
meas
+ 16 dB (transformer ratio N1:N2 and transformer loss
G
v
= 20 log(V
0
/ V
i
) + 1 dB (1 dB = insertion loss of balun)
50
spectrum
analyser
Device
under
Test
IFOUT
LOWIN
IFOUT
V'
meas
V
0
V
i
50
C
Transformer
N1 : N2 = 10 : 2 turns
N1
N2
50
V
V
meas
RMS
Voltmeter
50
spectrum
analyser
Device
under
Test
MIDIN
HIGHIN
IFOUT
MIDIN
HIGHIN
IFOUT
V'
meas
V
0
V
i
50
C
Transformer
N1 : N2 = 10 : 2 turns
N1
N2
50
V
V
meas
RMS
Voltmeter
Balun
1:1
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