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参数资料
| 型号： | ICS843252AGLF |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 680 MHz, OTHER CLOCK GENERATOR, PDSO16 |
| 封装： | 4.40 X 5 MM, 0.92 MM HEIGHT, ROHS COMPLIANT, MO-153, TSSOP-16 |
| 文件页数： | 1/15页 |
| 文件大小： | 194K |
| 代理商： | ICS843252AGLF |
843252AG
www.icst.com/products/hiperclocks.html
REV. A NOVEMBER 9, 2005
1
Integrated
Circuit
Systems, Inc.
ICS843252
FEMTOCLOCKSCRYSTAL-TO-3.3V LVPECL
FREQUENCY SYNTHESIZER
PRELIMINARY
GENERAL DESCRIPTION
The ICS843252 is a 2 differential output LVPECL
Synthesizer designed to generate Ethernet refer-
ence clock frequencies and is a member of the
HiPerClocks family of high performance clock
solutions from ICS. Using a 19.53125MHz or
25MHz, 18pF parallel resonant crystal, the following frequen-
cies can be generated based on the settings of 4 frequency
select pins (SEL[A1:A0], SEL[B1:B0]): 625MHz, 312.5MHz,
156.25MHz, and 125MHz.
The two banks have their own dedicated frequency select
pins and can be independently set for the frequencies
mentioned above. The ICS843252 ICS’ 3rd generation
low phase noise VCO technology and can achieve 1ps or
lower typical rms phase jitter, easily meeting Ethernet
jitter requirements. The ICS843252 is packaged in a small
16-pin TSSOP package.
FEATURES
Two 3.3V differential LVPECL output pairs
Using a 19.53125MHz or 25MHz crystal, the two output
banks can be independently set for 625MHz, 312.5MHz,
156.25MHz or 125MHz
Crystal oscillator interface
VCO range: 490MHz to 680MHz
RMS phase jitter @ 156.25MHz (1.875MHz - 20MHz):
0.47ps (typical)
Full 3.3V supply mode
0°C to 70°C ambient operating temperature
Industrial temperature available upon request
Available in both standard and lead-free RoHS-compliant
packages
HiPerClockS
ICS
BLOCK DIAGRAM
XTAL_IN
XTAL_OUT
QA
nQA
QB
nQB
PIN ASSIGNMENT
nQB
QB
VCCO_B
SELB1
SELB0
VCCO_A
QA
nQA
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
XTAL_IN
XTAL_OUT
VEE
SELA1
SELA0
VCC
VCCA
FB_SEL
ICS843252
16-Lead TSSOP
4.4mm x 5.0mm x 0.92mm
package body
G Package
Top View
OSC
Phase
Detector
VCO
490MHz - 680MHz
Feedback Divider
2
0 0
÷1
0 1
÷2
1 0
÷3
1 1
÷4 (default)
0 0
÷2
0 1
÷4
1 0
÷5
1 1
÷8 (default)
0 = ÷25 (default)
1 = ÷32
SELA[0:1}
FB_SEL
SELB[0:1}
Pulldown
Pullup
The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on
initial product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications
without notice.
相关PDF资料 |
PDF描述 |
|---|---|
| ICS843252AG | 680 MHz, OTHER CLOCK GENERATOR, PDSO16 |
| ICS843256AGILF | 333.33 MHz, OTHER CLOCK GENERATOR, PDSO24 |
| ICS843256AMI | 333.33 MHz, OTHER CLOCK GENERATOR, PDSO24 |
| ICS843256AMIT | 333.33 MHz, OTHER CLOCK GENERATOR, PDSO24 |
| ICS843256AGIT | 333.33 MHz, OTHER CLOCK GENERATOR, PDSO24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS843252AGLFT | 功能描述:IC SYNTHESIZER LVPECL 16-TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:HiPerClockS™, FemtoClock™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
| ICS843252AGT | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843253AGI-45LF | 功能描述:IC SYNTHESIZER LVPECL 16-TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:HiPerClockS™, FemtoClock™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
| ICS843253AGI-45LFT | 功能描述:IC SYNTHESIZER LVPECL 16-TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:HiPerClockS™, FemtoClock™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
| ICS843256 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER |
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