参数资料
型号: ICS8422004AGI
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 时钟产生/分配
英文描述: 226.66 MHz, OTHER CLOCK GENERATOR, PDSO24
封装: 4.40 X 7.80 MM, 0.92 MM HEIGHT, MO-153, TSSOP-24
文件页数: 1/14页
文件大小: 411K
代理商: ICS8422004AGI
8422004AGI
www.icst.com/products/hiperclocks.html
REV. B NOVEMBER 14, 2005
1
Integrated
Circuit
Systems, Inc.
ICS8422004I
FEMTOCLOCKSLVCMOS/CRYSTAL-TO-
LVHSTL FREQUENCY SYNTHESIZER
PRELIMINARY
GENERAL DESCRIPTION
The ICS8422004I is a 4 output LVHSTL Synthesizer
optimized to generate Fibre Channel reference
clock frequencies and is a member of the
HiPerClocksTM family of high performance clock
solutions from ICS. Using a 26.5625MHz 18pF
parallel resonant crystal, the following frequencies can be
generated based on the 2 frequency select pins (F_SEL[1:0]):
212.5MHz, 187.5MHz, 159.375MHz, 156.25, 106.25MHz and
53.125MHz. The ICS8422004I uses ICS’ 3rd generation low
phase noise VCO technology and can achieve 1ps or lower
typical rms phase jitter, easily meeting Fibre Channel jitter
requirements. The ICS8422004I is packaged in a small
24-pin TSSOP package.
FEATURES
Four LVHSTL outputs (VOHmax = 1.2V)
Selectable crystal oscillator interface
or LVCMOS/LVTTL single-ended input
Supports the following output frequencies: 212.5MHz,
187.5MHz, 159.375MHz, 156.25, 106.25MHz, 53.125MHz
VCO range: 560MHz - 680MHz
RMS phase jitter @ 212.5MHz, using a 26.5625MHz crystal
(637kHz - 10MHz): 0.59ps (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 and lead-free RoHS-compliant
packages
HiPerClockS
ICS
PIN ASSIGNMENT
1
0
1
0
Phase
Detector
VCO
M = 24 (fixed)
F_SEL[1:0]
0 0
÷3
0 1
÷4
1 0
÷6
1 1
÷12
2
OSC
ICS8422004I
24-Lead TSSOP
4.40mm x 7.8mm x 0.92mm
package body
G Package
Top View
nQ1
Q1
VDDO
Q0
nQ0
MR
nPLL_SEL
nc
VDDA
F_SEL0
VDD
F_SEL1
1
2
3
4
5
6
7
8
9
10
11
12
nQ2
Q2
VDDO
Q3
nQ3
GND
nc
nXTAL_SEL
TEST_CLK
GND
XTAL_IN
XTAL_OUT
24
23
22
21
20
19
18
17
16
15
14
13
BLOCK DIAGRAM
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4
24
6
5
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5
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1
FREQUENCY SELECT FUNCTION TABLE
F_SEL[1:0]
nPLL_SEL
TEST_CLK
XTAL_IN
XTAL_OUT
nXTAL_SEL
MR
Q0
nQ0
Q1
nQ1
Q2
nQ2
Q3
nQ3
Pulldown
26.5625MHz
Pulldown
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.
DATA SHEET
ICS8422004I
IDT / ICS FEMTOCLOCKS LVCMOS/CRYSTAL-TO-LVHSTL FREQUENCY SYNTHESIZER
ICS8422004I
1
FEMTOCLOCKS LVCMOS/CRYSTAL-TO-LVHSTL
FREQUENCY SYNTHESIZER
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