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參數(shù)資料
| 型號： | TDA5637T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 調(diào)諧器 |
| 英文描述： | 9 V VHF, hyperband and UHF mixers- oscillators for TV and VCR 3-band tuners |
| 中文描述： | 3-BAND, VIDEO TUNER, PDSO24 |
| 封裝： | PLASTIC, SO-24 |
| 文件頁數(shù)： | 11/28頁 |
| 文件大?。?/td> | 217K |
| 代理商： | TDA5637T |
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1996 Jun 10
11
Philips Semiconductors
Product specification
9 V VHF, hyperband and UHF mixers-
oscillators for TV and VCR 3-band tuners
TDA5636; TDA5637
Fig.4 Band A gain measurement.
handbook, full pagewidth
MBH466
signal
source
V
V
D.U.T.
AIN
GND
IFOUT
e
50
27
50
50
Vi
Vo
meas
meas
V'
RMS
voltmeter
spectrum
analyzer
Z
i
(AIN)
>>
50
V
i
= 2
×
V
meas
.
50
V
o
V
i
V
o
= V’
meas
×
.
G
v
= 20 log
.
27
+
50
------
Fig.5 Input circuit for optimum noise figure in band A.
handbook, full pagewidth
MBE286 - 1
L1
C2
C1
PCB
plug
plug
BNC
BNC
RIM-RIM
I1
C4
C3
PCB
RIM-RIM
I3
I2
(a)
(b)
(a) For f
RF
= 50 MHz:
mixer A frequency response measured = 57 MHz, loss = 0 dB.
image suppression = 16 dB.
C1 = 9 pF.
C2 = 15 pF.
L1 = 7 turns (diameter. = 5.5 mm, wire diameter. = 0.5 mm).
l1 = semi rigid cable (RIM): 5 cm long
(semi rigid cable (RIM); 33 dB/100 m; 50
;
96 pF/m).
(b) For f
RF
= 150 MHz:
mixer A frequency response measured = 150.3 MHz, loss = 1.3 dB.
image suppression = 13 dB.
C3 = 5 pF.
C4 = 25 pF.
l2 = semi rigid cable (RIM): 30 cm long.
l3 = semi rigid cable (RIM): 5 cm long
(semi rigid cable (RIM); 33 dB/100 m; 50
;
96 pF/m).
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