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參數(shù)資料
| 型號： | TDA6651 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog) |
| 中文描述： | 5伏混頻器/振蕩器，低噪聲的混合型地面調(diào)諧器鎖相環(huán)頻率合成器（數(shù)字和模擬） |
| 文件頁數(shù)： | 32/55頁 |
| 文件大?。?/td> | 377K |
| 代理商： | TDA6651 |
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2004 Mar 22
32
Philips Semiconductors
Product specification
5 V mixer/oscillator and low noise PLL synthesizer
for hybrid terrestrial tuner (digital and analog)
TDA6650TT;
TDA6651TT
handbook, full pagewidth
MCE452
Lp
Cp
Cs
Cc
TL
to the IC
mixer input
Lp
Cp
Ls
Cc
TL
to the IC
mixer input
BNC
connector
connector
Fig.17 Input circuit for optimum noise figure in low and mid band.
For f
RF
= 50 MHz
(Schematic A)
Loss = 0 dB.
Cs = 12 pF in parallel with a 0.8 pF to 8 pF trimmer.
Cp = 18 pF in parallel with a 0.8 pF to 8 pF trimmer.
Cc = 4.7 nF.
Lp = 8 turns,
5 mm, wire
= 0.4 mm air coil
TL = 50
semi rigid cable, length = 75 mm.
For f
RF
= 150 MHz
(Schematic A)
Loss = 0 dB.
Cs = 0.8 pF to 8 pF trimmer.
Cp = 0.4 pF to 2.5 pF trimmer.
Cc = 4.7 nF.
Lp = 4 turns,
4.5 mm, wire
= 0.4 mm air coil
TL = 50
semi rigid cable, length = 75 mm.
For f
RF
= 300 MHz
(Schematic B)
Loss = 0.5 dB.
Cp = 8.2 pF in parallel with a 0.8 pF to 8 pF trimmer.
Cc = 4.7 nF.
Ls = 2 turns,
1.5 mm, wire
= 0.4 mm air coil.
Lp = 2 turns,
1.5 mm, wire
= 0.4 mm air coil.
TL = 50
semi rigid cable, length = 75 mm.
Schematic A.
Schematic B.
38.9 MHz
V
A
B
C
D
HYBRID
FILTER
LBIN
or
MBIN
IFOUTA
DUT
IFOUTB
V
CCA
fce749
50
wanted
signal
source
unwanted
signal
source
AM = 30%
1 kHz
10 dB
attenuator
V
meas
RMS
voltmeter
50
50
e
u
e
w
50
modulation
analyzer
27
V
o
Fig.18 Cross modulation measurement in low and mid band with asymmetrical IF output.
V
o
= V
meas
+ 3.75 dB.
Wanted signal source at f
RFpix
is 80 dB
μ
V.
Unwanted output signal at f
snd
.
The level of unwanted signal is measured by causing 1% AM modulation in
the wanted signal.
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|---|---|
| TDA6651ATT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog) |
| TDA6651ATT/C3 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog) |
| TDA6651ATT/C3/S2 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog) |
| TDA6651ATT/C3/S3 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog) |
| TDA6651TT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog) |
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