參數(shù)資料
型號: ICS843002AG-01LF
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 1/17頁
文件大?。?/td> 0K
描述: IC SYNTHESIZER LVPECL 20-TSSOP
標(biāo)準(zhǔn)包裝: 74
系列: HiPerClockS™, FemtoClock™
類型: 頻率合成器
PLL: 帶旁路
輸入: 晶體
輸出: LVPECL
電路數(shù): 1
比率 - 輸入:輸出: 1:2
差分 - 輸入:輸出: 無/是
頻率 - 最大: 170MHz
除法器/乘法器: 是/無
電源電壓: 2.97 V ~ 3.63 V
工作溫度: -30°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 20-TSSOP
包裝: 管件
其它名稱: 800-1952-5
843002AG-01LF
ICS843002AG-01LF-ND
843002AG-01
www.icst.com/products/hiperclocks.html
REV. B MAY 6, 2005
1
Integrated
Circuit
Systems, Inc.
ICS843002-01
FEMTOCLOCKSCRYSTAL-TO-
3.3V LVPECL FREQUENCY SYNTHESIZER
GENERAL DESCRIPTION
The ICS843002-01 is a 2 output LVPECL
synthesizer optimized to generate Ethernet
reference clock frequencies and is a member of
the HiPerClocksTM family of high performance
clock solutions from ICS. Using a 25MHz 18pF
parallel resonant crystal, the following frequencies can be
generated based on the 2 frequency select pins
(F_SEL[1:0]): 156.25MHz, 125MHz, and 62.5MHz. The
ICS843002-01 uses ICS’ 3rd generation low phase noise VCO
technology and can achieve 1ps or lower typical rms phase
jitter, easily meeting Ether net jitter requirements. The
ICS843002-01 is packaged in a small 20-pin TSSOP package.
FEATURES
Two 3.3V LVPECL outputs
Selectable crystal oscillator interface
or LVCMOS single-ended input
Supports the following input frequencies:
156.25MHz, 125MHz and 62.5MHz
VCO range: 560MHz - 680MHz
RMS phase jitter @ 156.25MHz, using a 25MHz crystal
(1.875MHz-20MHz): 0.54ps (typical)
Typical phase noise at 156.25MHz
Phase noise:
Offset
Noise Power
100Hz ............... -97.3 dBc/Hz
1KHz .............. -119.1 dBc/Hz
10KHz .............. -126.4 dBc/Hz
100KHz .............. -127.6 dBc/Hz
Full 3.3V supply mode
Lead-Free package fully RoHS compliant
-30°C to 85°C ambient operating temperature
HiPerClockS
ICS
PIN ASSIGNMENT
1
0
1
0
Phase
Detector
VCO
625MHz
(w/25MHz
Reference)
M = 25 (fixed)
F_SEL[1:0]
0 0
÷4
0 1
÷5
1 0
÷10
1 1 not used
OSC
2
ICS843002-01
20-Lead TSSOP
6.5mm x 4.4mm x 0.92mm
package body
G Package
Top View
BLOCK DIAGRAM
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FREQUENCY SELECT FUNCTION TABLE
F_SEL[1:0]
nPLL_SEL
TEST_CLK
XTAL_IN
XTAL_OUT
nXTAL_SEL
MR
Q0
nQO
Q1
nQ1
Pulldown
25MHz
nc
VCCO
Q0
nQ0
MR
nPLL_SEL
nc
VCCA
F_SEL0
VCC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VCCO
Q1
nQ1
VEE
VCC
nXTAL_SEL
TEST_CLK
XTAL_IN
XTAL_OUT
F_SEL1
Pulldown
DATA SHEET
ICS843002-01
IDT / ICS FEMTOCLOCKS CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
ICS843002-01
1
FEMTOCLOCKS CRYSTAL-TO-3.3V LVPECL
FREQUENCY SYNTHESIZER
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