参数资料
型号: ICS8421002AGI-01LFT
厂商: IDT, Integrated Device Technology Inc
文件页数: 1/14页
文件大小: 0K
描述: IC FREQ SYNTHESIZER 20-TSSOP
标准包装: 2,500
系列: HiPerClockS™, FemtoClock™
类型: 频率合成器
PLL: 带旁路
输入: LVCMOS,LVTTL,晶体
输出: LVHSTL
电路数: 1
比率 - 输入:输出: 2:2
差分 - 输入:输出: 无/是
频率 - 最大: 170MHz
除法器/乘法器: 是/无
电源电压: 2.375 V ~ 3.465 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 20-TSSOP
包装: 带卷 (TR)
其它名称: 8421002AGI-01LFT
FEMTOCLOCKS CRYSTAL-TO-HSTL
FREQUENCY SYNTHESIZER
ICS8421002I-01
IDT / ICS HSTL FREQUENCY SYNTHESIZER
1
ICS8421002AGI-01 REV B
MARCH 02, 2009
GENERAL DESCRIPTION
The ICS8421002I-01 is a 2 output HSTL
Synthesizer optimized to generate Ether net
reference clock frequencies and is a member of
the HiPerClocksTM family of high performance clock
solutions from IDT. 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 ICS8421002I-01 uses IDT’s 3rd
generation low phase noise VCO technology and can achieve
1ps or lower typical rms phase jitter, easily meeting Ethernet
jitter requirements. The ICS8421002I-01 is packaged in a small
20-pin TSSOP package.
FEATURES
Two HSTL outputs (VOHmax = 1.5V)
Selectable crystal oscillator interface
or LVCMOS/LVTTL single-ended input
Supports the following output frequencies: 156.25MHz,
125MHz, 62.5MHz
VCO range: 560MHz - 680MHz
RMS phase jitter @ 156.25MHz, using a 25MHz crystal
(1.875MHz - 20MHz): 0.44ps (typical)
Power supply modes:
Core/Output
3.3V/1.8V
2.5V/1.8V
-40°C to 85°C ambient operating temperature
Available in both standard (RoHS 5) and lead-free (RoHS 6)
compliant packages
HiPerClockS
ICS
1
0
1
0
Phase
Detector
VCO
M = 25 (fixed)
F_SEL[1:0]
0 0
÷4 (default)
0 1
÷5
1 0
÷10
1 1
Not Used
2
OSC
ICS8421002I-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
REF_CLK
XTAL_IN
XTAL_OUT
nXTAL_SEL
MR
Q0
nQ0
Q1
nQ1
Pulldown
25MHz
Pulldown
nc
VDDO
Q0
nQ0
MR
nPLL_SEL
nc
VDDA
F_SEL0
VDD
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VDDO
Q1
nQ1
GND
VDD
nXTAL_SEL
REF_CLK
XTAL_IN
XTAL_OUT
F_SEL1
PIN ASSIGNMENT
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