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參數(shù)資料
| 型號(hào)： | SP5848KG |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | 2.2/1.3GHz 3-Wire Bus Dual Low Phase Noise PLL |
| 中文描述： | 2.2/1.3GHz 3線總線雙低相位噪聲鎖相環(huán) |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 67K |
| 代理商： | SP5848KG |
1
Preliminary Information
SP5848
SP5848
2.2/1.3GHz 3-Wire Bus Dual Low Phase Noise PLL
Preliminary Information
Features
G
Dual independent PLL frequency synthesisers in a
single package, optimised for double conversion
cable tuners, offering improved application
G
2.2GHz up-synthesiser optimised for low phase
noise up to comparison frequencies of 4MHz
Ordering Information
SP5848/
KG/QP1S
SP5848/KG/QP1T
Applications
G
TV, VCR, and cable tuning systems
The SP5848 is a dual PLL frequency synthesizer
controlled by a 3-wire bus optimised for application in
double conversion tuners.
Each synthesiser loop within the SP5848 is
independently addressable and contains an RF
programmable divider, phase/frequency detector and
charge pump/loop amplifier section; a common
reference frequency oscillator and divider chain is
provided, whose ratios for each loop are independently
programmable.
Both synthesisers are optimised for low phase noise
performance and in addition synthesiser 2 is capable of
operation with a low comparison frequency.
G
1.3GHz down-synthesiser optimised for low phase
noise AND small step size
G
Common reference oscillator and divider with
independently selectable ratios for each
synthesiser
G
10:1 programmable charge pump current ratio in up
synthesiser
G
3-Wire bus programmable, each synthesiser
indepently addressable
G
Low power consumption, typ 100mW at 5V
G
ESD protection, (Normal ESD handling procedures
should be observed)
DS5076
Issue 1.6
October 1999
Description
RF1 INPUT
16/17
4 BIT
COUNT
11 BIT
COUNT
15 BIT LATCH
2 BIT
LATCH
PORT P0
PUMP 1
DRIVE 1
16 BIT LATCH
DATA
CLOCK
ENABLE
2
DATA
INTERFACE
RF 2 INPUT
16/17
4 BIT
COUNT
12 BIT
COUNT
1 BIT
LATCH
2 BIT
LATCH
5 BIT
LATCH
9
DIVIDE
PORT P1
PUMP 2
DRIVE 2
Figure 1 Block Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP5848QP1T | 2.2/1.3GHz 3-Wire Bus Dual Low Phase Noise PLL |
| SP8400 | Very Low Phase Noise Synthesiser Divider |
| SP8400KGMPES | Very Low Phase Noise Synthesiser Divider |
| SP8401 | Very Low Phase Noise 300MHz ±10/11 |
| SP8401KGMPES | Very Low Phase Noise 300MHz ±10/11 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP5848KGQP1S | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:2.2/1.3GHz 3-Wire Bus Dual Low Phase Noise PLL |
| SP5848QP1T | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:2.2/1.3GHz 3-Wire Bus Dual Low Phase Noise PLL |
| SP585 | 制造商:Power-One 功能描述: |
| SP5875P/F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SP5875P/F 是一顆電流模式PWM 控制芯片，內(nèi)建高壓電流源，在啟動(dòng)階段提供啟動(dòng)電流，由此可以構(gòu)建一個(gè)低損耗的啟動(dòng)電路。適用于60W以內(nèi)的方案。SP5875P/F 的CS 腳設(shè)置有前沿消隱功能，并且內(nèi)置斜坡補(bǔ)償，結(jié)合多種工作模式，方便構(gòu)建高效率、低成本的AC/DC 應(yīng)用方案。 |
| SP5876 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SP5876機(jī)功耗高性能離線反激PWM控制器 |
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