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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)： | 1/15頁 |
| 文件大小： | 237K |
| 代理商： | SP5669 |
Ordering Information
SP5669/KG/MP1S (Tubes)
SP5669/KG/MP1T (Tape and reel)
The comparison frequency is obtained either from an
on–chip crystal controlled oscillator, or from an external
source. The oscillator frequency F
or the comparison
frequency F
may be switched to the REF/COMP
output. This feature is ideally suited to providing the
reference frequency for a second synthesiser such as in
a double conversion tuner (see Fig. 8).
The synthesiser is controlled via an I
2
C bus, and
responds to one of four programmable addresses which
are selected by applying a specific voltage to the
‘a(chǎn)ddress’ input. This feature enables two or more
synthesisers to be used in a system.
The device contains four switching ports P0–P3 and a
5–level ADC. The output of the ADC can be read via the
I
2
C
bus.
The device also contains a varactor line disable and
chargepump disable facility.
Features
G
Complete 2.7GHz single chip system
Compatible with UK DTT offset requirements
Optimised for low phase noise
Selectable divide by two prescaler
Selectable reference division ratio
Selectable reference/comparison frequency output
Selectable charge pump current
Four selectable I
2
C bus address
5–level ADC
Pin compatible with the SP5658 3–wire bus
controlled synthesiser and SP5659 I
2
C bus
synthesiser and SP5659 I
2
C bus synthesiser
ESD protection; (Normal ESD handling
procedures should be observed)
G
G
G
G
G
G
G
G
G
Applications
G
Complete 2.7GHz single chip system
Optimised for low phase noise
G
SP5669
2.7GHz I
2
C Bus Controlled Synthesiser
Preliminary Information
DS4852 -
Issue 2.1
May 1999
Description
The SP5669 is a single chip frequency synthesiser
designed for tuning systems up to 2.7GHz and offers
step size compatible with DTT offset requirements.
The RF preamplifier drives a divide by two prescaler
which can be disabled for applications up to 2GHz,
allowing direct interfacing with the programmable
divider so enabling a step size equal to the comparison
frequency. For applications up to 2.7GHz the divide by
two is enabled, giving a step size of twice the
comparison frequency.
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PDF描述 |
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| SP5748KGMP1S | 2.4GHz Very Low Phase Noise PLL |
| SP5748KGMP1T | 2.4GHz Very Low Phase Noise PLL |
| SP5748 | 2.4GHz Very Low Phase Noise PLL |
| SP5748KG | 2.4GHz Very Low Phase Noise PLL |
| SP5848KGQP1S | 2.2/1.3GHz 3-Wire Bus Dual Low Phase Noise PLL |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP5669_97 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:2.7GHz I2C Bus Controlled Synthesiser |
| SP5669KG | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:2.7GHz I2C Bus Controlled Synthesiser |
| 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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