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參數(shù)資料
| 型號(hào)： | TDA5745TS |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類(lèi)： | 衰減器 |
| 英文描述： | DIODE: SCHOTTKY, 60V, 1A, PACKAGE SMA |
| 中文描述： | RF/MICROWAVE DOUBLE BALANCED MIXER |
| 文件頁(yè)數(shù)： | 9/20頁(yè) |
| 文件大?。?/td> | 123K |
| 代理商： | TDA5745TS |
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1998 Mar 09
9
Philips Semiconductors
Preliminary specification
Low power mixers/oscillators for
hyperband tuners
TDA5744; TDA5745
TEST AND APPLICATION INFORMATION
Fig.4 Voltage gain (G
V
) measurement in the VHF band.
(1) N1 is 2
×
5 turns.
(2) N2 is 2 turns.
The gain is defined as the transducer gain plus the voltage transformation ratio (T
loss
) of the transformer.
Z
i
>> 50
V
i
= 2
×
V
meas
; V
i
= 80 dB
μ
V.
V
o
= V’
meas
+ 16 dB (transformer ratio
and transformer loss); G
V
= 20 log
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 (G
V
) measurement in the UHF band.
(1) N1 is 2
×
5 turns.
(2) N2 is 2 turns.
The gain is defined as the transducer gain plus the voltage transformation ratio (T
loss
) of the transformer.
V
i
= V
meas
; V
i
= 70 dB
μ
V.
V
o
= V’
meas
+ 16 dB (transformer ratio
and transformer loss); G
v
= 20 log
+ 1 dB (1 dB = correction for hybrid loss).
N2
5
=
V
o
V
i
------
handbook, full pagewidth
Vi
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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