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參數(shù)資料
| 型號(hào)： | 840002AGT |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類(lèi)： | XO, clock |
| 英文描述： | 226.67 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)： | 1/13頁(yè) |
| 文件大?。?/td> | 808K |
| 代理商： | 840002AGT |
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Integrated
Circuit
Systems, Inc.
840002AG
www.icst.com/products/hiperclocks.html
REV. B FEBRUARY 17, 2006
1
ICS840002
FEMTOCLOCKSCRYSTAL-TO-
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
GENERAL DESCRIPTION
The ICS840002 is a 2 output LVCMOS/LVTTL
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_SEL1:0):
212.5MHz, 159.375MHz, 156.25MHz, 106.25MHz, and
53.125MHz.The ICS840002 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 ICS840002 is packaged in a 16-pin TSSOP package.
HiPerClockS
ICS
BLOCK DIAGRAM
PIN ASSIGNMENT
F_SEL0
nXTAL_SEL
TEST_CLK
OE
MR
nPLL_SEL
VDDA
VDD
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
F_SEL1
GND
Q0
Q1
VDDO
XTAL_IN
XTAL_OUT
ICS840002
16-Lead TSSOP
4.4mm x 5.0mm x 0.92mm
package body
G Package
Top View
FEATURES
Two LVCMOS outputs @ 3.3V, 17
Ω typical output impedance
Selectable crystal oscillator interface
or LVCMOS single-ended input
Output frequency range: 46.66MHz - 233.33MHz
VCO range: 560MHz - 700MHz
Supports the following output frequencies: 212.5MHz,
159.375MHz, 156.25MHz, 106.25MHz and 53.125MHz
RMS phase jitter @ 212.5MHz (637kHz - 10MHz):
0.83ps (typical)
Typical phase noise at 212.5MHz:
Offset
Noise Power
100Hz ............... -91.3 dBc/Hz
1kHz ............. -114.3 dBc/Hz
10kHz ............. -120.7 dBc/Hz
100kHz ............. -120.2 dBc/Hz
Full 3.3V or 3.3V core/2.5V output supply modes
0°C to 70°C ambient operating temperature
Available in both standard and lead-free RoHS compliant
packages
Q0
Q1
OE
F_SEL1:0
nPLL_SEL
nXTAL_SEL
XTAL_IN
XTAL_OUT
TEST_CLK
MR
OSC
Phase
Detector
VCO
M = ÷24 (fixed)
F_SEL1:0
0 0 ÷3
0 1 ÷4
1 0 ÷6
1 1 ÷12 (default)
0
1
0
2
N
26.5625MHz
Pullup
Pulldown
Pullup:Pullup
Pulldown
FREQUENCY SELECT FUNCTION TABLE FOR FIBRE CHANNEL APPLICATIONS
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DATA SHEET
ICS840002
IDT / ICS FEMTOCLOCKS CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER
ICS840002
1
FEMTOCLOCKS CRYSTAL-TO-LVCMOS/LVTTL
FREQUENCY SYNTHESIZER
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