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參數(shù)資料
| 型號： | SP5669 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | 2.7GHz I2C Bus Controlled Synthesiser |
| 中文描述： | 2.7GHz的I2C總線控制合成器 |
| 文件頁數(shù)： | 9/15頁 |
| 文件大?。?/td> | 237K |
| 代理商： | SP5669 |
9
SP5669
Double Conversion Tuner Systems
The high 2.7GHz maximum operating frequency and
excellent noise characteristics of the SP5669 enables
the construction of double conversion high IF tuners.
A typical system shown in Fig.8 will use the SP5669 as
the first LO control for full band upconversion to an IF of
greater than 1GHz.
The wide range of reference division ratios allows
the SP5669 to be used both for the up converter LO with
a high phase comparator frequency (hence low phase
noise) and the down converter which utilises the device
in a lower comparison frequency mode (which offers a
fine step size).
50–900MHz
1.6GHz
38.9MHz
1650–2700MHz
SP5669
SP5669
First LO
Second LO
Reference Clock
Figure. 8 Example of double conversion from VHF/UHF frequencies to TV IF
CONTROL
MICRO
15nF
68pF
+30V
+5V
22k
16k
47k
+12V
2n2
BCW31
1n
1n
10n
P3
P2
TUNER
OSCILLATOR
OUTPUT
13k3
P0
P1
SCL
SDA
ADDRESS
REF10n
18pF
4MHz
Optional application utilising
on–board crystal controlled
oscillator
2
3
4
5
6
7
13
12
11
10
8
9
1
16
14
15
ADC
Figure. 9 Typical appliction
Application Notes
A generic set of application notes AN168 for designing
with synthesisers such as the SP5659 has been written.
This covers aspects such as loop filter design and
decoupling. This application note is also featured in the
Media Data Book, or refer to the Mitel Semicondor
Internet Site http://www.gpsemi.com.
A generic test/demo board has been produced which
can be used for the SP5669. A circuit diagram and list
of components for the board is shown in Figs. 10 and 11.
The board can be used for the following purposes:
(A) Measuring RF sensitivity performance.
(B) Indicating port function.
(C) Synthesising a voltage controlled oscillator.
(D) Testing of external reference
S
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相關(guān)代理商/技術(shù)參數(shù) |
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| SP5669_97 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:2.7GHz I2C Bus Controlled Synthesiser |
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| SP5669KGMP1S | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:2.7GHz I2C Bus Controlled Synthesiser |
| SP5669KGMP1T | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:2.7GHz I2C Bus Controlled Synthesiser |
| SP567 | 制造商:Power-One 功能描述: |
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