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ICS84326AMT Datasheet

  • ICS84326AMT

  • CRYSTAL-TO-3.3V LVPECL SERIAL ATTACHED SCSI CLOCK SYNTHESIZ...

  • 171.20KB

  • 15页

  • ICS

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PRELIMINARY
Integrated
Circuit
Systems, Inc.
ICS84326
C
RYSTAL
-
TO
-3.3V LVPECL
S
ERIAL
A
TTACHED
SCSI C
LOCK
S
YNTHESIZER
/F
ANOUT
B
UFFER
F
EATURES
鈥?/div>
6 LVPECL outputs
鈥?/div>
Crystal oscillator interface
鈥?/div>
Output frequency: 75MHz or 150MHz
鈥?/div>
Crystal input frequency: 25MHz
鈥?/div>
Cycle-to-cycle jitter: 20ps (typical)
鈥?/div>
RMS phase jitter at 150MHz, using a 25MHz crystal
(899.8KHz to 20MHz): TBD
鈥?/div>
Phase noise:
Offset
100Hz ...............
1KHz ...............
10KHz ...............
100KHz ...............
Noise Power
TBD
TBD
TBD
TBD
G
ENERAL
D
ESCRIPTION
The ICS84326 is a Crystal-to-3.3V LVPECL Clock
Synthesizer/Fanout Buffer designed for Serial
HiPerClockS鈩?/div>
Attached SCSI applications and is a member of
the HiperClockS family of High Performance Clock
Solutions from ICS. Using a 25MHz crystal, the
6 LVPECL outputs can be set for either 75MHz or 150MHz
using the frequency select pins. The low jitter/low phase noise
characteristics make it an ideal clock source for use in Serial
Attached SCSI applications or for other applications which
require a 75MHz or 150MHz reference clock.
,&6
F
UNCTION
T
ABLE
Inputs
MR
1
0
0
F_SEL
X
0
1
Output Frequency
F_OUT
LOW
75MHz
150MHz
鈥?/div>
Full 3.3V or 3.3V core, 2.5V supply mode
鈥?/div>
0掳C to 70掳C ambient operating temperature
鈥?/div>
Industrial temperature information available upon request
B
LOCK
D
IAGRAM
P
IN
A
SSIGNMENT
Q0
nQ0
Q1
nQ1
Q2
nQ2
Q3
nQ3
Q4
nQ4
Q5
nQ5
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
V
CCO
F_SEL
nc
MR
XTAL1
XTAL2
nc
V
CCA
V
CC
PLL_SEL
V
EE
V
CCO
XTAL1
OSC
XTAL2
0
1
6
Output
Divider
PLL
/
6
/
Q0:Q5
nQ0:nQ5
Feedback
Divider
ICS84326
24-Lead, 300-MIL SOIC
7.5mm x 15.33mm x 2.3mm body package
M Package
Top View
MR
PLL_SEL
F_SEL
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.
84326AM
www.icst.com/products/hiperclocks.html
1
REV. A MARCH 10, 2003

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