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參數(shù)資料
| 型號(hào)： | ICS843252AG |
| 元件分類： | 時(shí)鐘產(chǎn)生/分配 |
| 英文描述： | 680 MHz, OTHER CLOCK GENERATOR, PDSO16 |
| 封裝： | 4.40 X 5 MM, 0.92 MM HEIGHT, MO-153, TSSOP-16 |
| 文件頁(yè)數(shù)： | 1/15頁(yè) |
| 文件大?。?/td> | 194K |
| 代理商： | ICS843252AG |
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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.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS843252AG-04 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS? CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR |
| ICS843252AG-04LF | 功能描述:IC CLK GENERATOR LVPECL 16-TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:HiPerClockS™, FemtoClock™ 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:時(shí)鐘/頻率合成器，扇出分配 PLL:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 除法器/乘法器:- 電源電壓:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-VFQFP-EP（8x8） 包裝:帶卷 (TR) 其它名稱:844S012AKI-01LFT |
| ICS843252AG-04LFT | 功能描述:IC CLK GENERATOR LVPECL 16-TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:HiPerClockS™, FemtoClock™ 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:時(shí)鐘/頻率合成器，扇出分配 PLL:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 除法器/乘法器:- 電源電壓:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-VFQFP-EP（8x8） 包裝:帶卷 (TR) 其它名稱:844S012AKI-01LFT |
| ICS843252AG-04T | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR |
| ICS843252AG-45LF | 功能描述:IC SYNTHESIZER LVPECL 16-TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:HiPerClockS™, FemtoClock™ 標(biāo)準(zhǔn)包裝:2,000 系列:- 類型:PLL 頻率合成器 PLL:是 輸入:晶體 輸出:時(shí)鐘 電路數(shù):1 比率 - 輸入:輸出:1:1 差分 - 輸入:輸出:無(wú)/無(wú) 頻率 - 最大:1GHz 除法器/乘法器:是/無(wú) 電源電壓:4.5 V ~ 5.5 V 工作溫度:-20°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-LSSOP（0.175"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-SSOP 包裝:帶卷 (TR) 其它名稱:NJW1504V-TE1-NDNJW1504V-TE1TR |
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