參數(shù)資料
型號： 935250380518
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(shù)： 7/35頁
文件大?。?/td> 262K
代理商： 935250380518
1999 Jan 13
15
Philips Semiconductors
Product specication
5 V mixer/oscillator-PLL synthesizers for
hyperband tuners
TDA6404; TDA6405;
TDA6405A
TEST AND APPLICATION INFORMATION
Fig.4 Voltage gain (Gv) measurement in the VHF band.
(1) N1 is 2
× 5 turns
(2) N2 is 2 turns
Zi >> 50 Vi =2 × Vmeas; Vi =80dBV
Vo =V’meas + 16 dB (transformer ratio
and transformer loss)
Gv =20log
N1
N2
--------
5
=
V
o
V
i
------
handbook, full pagewidth
50
50
V
e
Vmeas
RMS
voltmeter
spectrum
analyzer
Vi
signal
source
MGK828
D.U.T.
VHFIN
IFOUT1
IFOUT2
50
Vo
V'meas
C
T
(1)
N1
(2)
N2
Fig.5 Voltage gain (Gv) measurement in the UHF band.
(1) N1 is 2
× 5 turns
(2) N2 is 2 turns
Vi =Vmeas; Vi =70dBV
Vo =V’meas + 16 dB (transformer ratio
and transformer loss)
Gv = 20 log
+ 1 dB (1 dB = correction for hybrid loss)
N1
N2
--------
5
=
V
o
V
i
------
handbook, full pagewidth
Vi
50
50
V
e
Vmeas
RMS
voltmeter
signal
source
50
A
B
C
D
HYBRID
D.U.T.
UHFIN1
IFOUT1
IFOUT2
UHFIN2
spectrum
analyzer
MGK829
50
Vo
V'meas
C
T
(1)
N1
(2)
N2
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