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ICS84320AYI-01 Datasheet(PDF) 1 Page - Integrated Circuit Systems

Part # ICS84320AYI-01
Description  780MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL
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Manufacturer  ICST [Integrated Circuit Systems]
Direct Link  http://www.icst.com
Logo ICST - Integrated Circuit Systems

ICS84320AYI-01 Datasheet(HTML) 1 Page - Integrated Circuit Systems

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84320AYI-01
www.icst.com/products/hiperclocks.html
REV. A AUGUST 11, 2005
1
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
output Cr ystal-to-3.3V Differential LVPECL
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
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
1
kHz ............... -114.2 dBc/Hz
10
kHz ............... -123.6 dBc/Hz
100
kHz ............... -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
32 31 30 29 28 27 26 25
9
10 11 12 13 14 15 16
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
XTAL_OUT
TEST_CLK
XTAL_SEL
VCCA
S_LOAD
S_DATA
S_CLOCK
MR
M5
M6
M7
M8
N0
N1
nc
VEE
ICS84320I-01
32-Lead LQFP
7mm x 7mm x 1.4mm
package body
Y Package
Top View
HiPerClockS™
ICS
OSC
VCO_SEL
XTAL_SEL
TEST_CLK
XTAL_IN
XTAL_OUT
S_LOAD
S_DATA
S_CLOCK
nP_LOAD
M0:M8
N0:N1
VCO
PLL
FOUT0
nFOUT0
FOUT1
nFOUT1
TEST
CONFIGURATION
INTERFACE
LOGIC
÷ M
0
1
0
1
PHASE DETECTOR
÷ 1
÷ 2
÷ 4
÷ 8
MR
÷ N
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.
PIN ASSIGNMENT


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