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ICS84320I-01 fiches techniques PDF

ICST - CRYSTAL-TO-3.3V DIFFERENTIAL

Numéro de référence ICS84320I-01
Description CRYSTAL-TO-3.3V DIFFERENTIAL
Fabricant ICST 
Logo ICST 





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ICS84320I-01 fiche technique
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Integrated
Circuit
Systems, Inc.
ICS84320I-01
780MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL
LVPECL FREQUENCY SYNTHESIZER
GENERAL DESCRIPTION
The ICS84320I-01 is a general purpose, dual
ICS output Crystal-to-3.3V Differential LVPECL
HiPerClockS™ High Frequency Synthesizer and a member of
the HiPerClockS™ family of High Performance
Clock Solutions from ICS. The ICS84320I-01
has a selectable TEST_CLK or crystal inputs. The VCO
operates at a frequency range of 620MHz to 780MHz. The
VCO frequency is programmed in steps equal to the
value of the input reference or crystal frequency. The VCO
and output frequency can be programmed using the
serial or parallel interfaces to the configuration logic. The
low phase noise characteristics of the ICS84320I-01
make it an ideal clock source for 10 Gigabit Ethernet,
SONET, and Serial Attached SCSI applications.
BLOCK DIAGRAM
VCO_SEL
XTAL_SEL
TEST_CLK
XTAL_IN
XTAL_OUT
OSC
0
1
MR
S_LOAD
S_DATA
S_CLOCK
nP_LOAD
PLL
PHASE DETECTOR
VCO
÷M
÷N
÷1
0 ÷2
÷4
1 ÷8
CONFIGURATION
INTERFACE
LOGIC
FEATURES
Dual differential 3.3V LVPECL outputs
Selectable crystal oscillator interface
or LVCMOS/LVTTL TEST_CLK
Output frequency range: 77.5MHz to 780MHz
Crystal input frequency range: 14MHz to 40MHz
VCO range: 620MHz to 780MHz
Parallel or serial interface for programming counter
and output dividers
Duty cycle: 44% - 56% (N > 1)
RMS period jitter: 2.0ps (typical)
RMS phase jitter at 155.52MHz, using a 38.88MHz crystal
(12kHz to 20MHz): 2.38ps (typical)
RMS phase noise at 155.52MHz (typical)
Offset
Noise Power
100Hz ................ -90.5 dBc/Hz
1kHz ............... -114.2 dBc/Hz
10kHz ............... -123.6 dBc/Hz
100kHz ............... -128.1 dBc/Hz
3.3V supply voltage
-40°C to 85°C ambient operating temperature
Available in both, Standard and RoHS/Lead-Free
compliant packages
PIN ASSIGNMENT
FOUT0
nFOUT0
FOUT1
nFOUT1
TEST
32 31 30 29 28 27 26 25
M5 1
24 XTAL_OUT
M6 2
M7 3
ICS84320I-01 23 TEST_CLK
32-Lead LQFP
22 XTAL_SEL
M8 4 7mm x 7mm x 1.4mm 21 VCCA
N0 5
package body
20 S_LOAD
N1 6
nc 7
Y Package
Top View
19 S_DATA
18 S_CLOCK
VEE 8
17 MR
9 10 11 12 13 14 15 16
M0:M8
N0:N1
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.
84320AYI-01
www.icst.com/products/hiperclocks.html
REV. A AUGUST 11, 2005
1

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