840001CK-32
www.icst.com/products/hiperclocks.html
REV. A NOVEMBER 23, 2005
1
Integrated
Circuit
Systems, Inc.
ICS840001-32
F
EMTO
C
LOCKS
TM C
RYSTAL
-
TO
-
LVCMOS/LVTTL F
REQUENCY
S
YNTHESIZER
PRELIMINARY
G
ENERAL
D
ESCRIPTION
The ICS840001-32 is a two output LVCMOS/
LVTTL Synthesizer and is a member of the
HiPerClocks
TM
family of high perfor mance
devices from ICS. The device uses a 40MHz
crystal to provide a 40MHz reference clock
output and to synthesize a 100MHz or 106.25MHz
output. The ICS840001-32 has excellent <1ps phase
jitter performance over the 637kHz 5MHz integration
range. The ICS840001-32 is packaged in a 3mm x 3mm
16-pin VFQFN, making it ideal for use on space con-
strained boards.
F
EATURES
One LVCMOS/LVTTL output, 15 typical output
impedence and one reference clock output
40MHz, 10pF parallel resonant crystal
Output frequencies: 100MHz or 106.25MHz
RMS phase jitter @ 106.25MHz, using a 40MHz crystal
(637kHz - 5MHz): 0.78ps (typical)
3.3V operating supply
0C to 70C ambient operating temperature
Availabe in both standard and lead-free RoHS-compliant
packages
HiPerClockSTM
ICS
B
LOCK
D
IAGRAM
P
IN
A
SSIGNMENT
OSC
Synthesizer
XTAL_IN
XTAL_OUT
Q
SEL
ICS840001-32
16-Lead VFQFN
3mm x 3mm x 0.95 package body
K Package
Top View
V
DD
XTAL_OUT
XTAL_IN
SEL
Q
V
DDO
_
Q
V
DD
REF_OUT
GND
nc
V
DDO
_
REF
_
OUT
GND
V
DDA
nc
nc
GND
1
2
3
4
12
11
10
9
5 6 7 8
16 15 14 13
REF_OUT
(Pullup)
F
UNCTION
T
ABLE
40MHz
100MHz or
106.25MHz
s
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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.
840001CK-32
www.icst.com/products/hiperclocks.html
REV. A NOVEMBER 23, 2005
2
Integrated
Circuit
Systems, Inc.
ICS840001-32
F
EMTO
C
LOCKS
TM C
RYSTAL
-
TO
-
LVCMOS/LVTTL F
REQUENCY
S
YNTHESIZER
PRELIMINARY
T
ABLE
2. P
IN
C
HARACTERISTICS
T
ABLE
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840001CK-32
www.icst.com/products/hiperclocks.html
REV. A NOVEMBER 23, 2005
3
Integrated
Circuit
Systems, Inc.
ICS840001-32
F
EMTO
C
LOCKS
TM C
RYSTAL
-
TO
-
LVCMOS/LVTTL F
REQUENCY
S
YNTHESIZER
PRELIMINARY
T
ABLE
3A. P
OWER
S
UPPLY
DC C
HARACTERISTICS
,
V
DD
= V
DDA
= V
DDO_REF_OUT
= V
DDO_Q
= 3.3V5%, T
A
= 0C
TO
70C
T
ABLE
4. C
RYSTAL
C
HARACTERISTICS
A
BSOLUTE
M
AXIMUM
R
ATINGS
Supply Voltage, V
DD
4.6V
Inputs, V
I
-0.5V to V
DD
+ 0.5 V
Outputs, V
O
-0.5V to V
DDO
+ 0.5V
Package Thermal Impedance,
JA
51.5C/W (0 lfpm)
Storage Temperature, T
STG
-65C to 150C
NOTE: Stresses beyond those listed under Absolute
Maximum Ratings may cause permanent damage to the
device. These ratings are stress specifications only. Functional
operation of product at these conditions or any conditions be-
yond those listed in the
DC Characteristics
or
AC Character-
istics
is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect product reliability.
T
ABLE
3B. LVCMOS/LVTTL DC C
HARACTERISTICS
,
V
DD
= V
DDA
= V
DDO_REF_OUT
= V
DDO_Q
= 3.3V5%, T
A
= 0C
TO
70C
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840001CK-32
www.icst.com/products/hiperclocks.html
REV. A NOVEMBER 23, 2005
4
Integrated
Circuit
Systems, Inc.
ICS840001-32
F
EMTO
C
LOCKS
TM C
RYSTAL
-
TO
-
LVCMOS/LVTTL F
REQUENCY
S
YNTHESIZER
PRELIMINARY
T
ABLE
5. AC C
HARACTERISTICS
,
V
DD
= V
DDA
= V
DDO_REF_OUT
= V
DDO_Q
= 3.3V5%, T
A
= 0C
TO
70C
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A
840001CK-32
www.icst.com/products/hiperclocks.html
REV. A NOVEMBER 23, 2005
5
Integrated
Circuit
Systems, Inc.
ICS840001-32
F
EMTO
C
LOCKS
TM C
RYSTAL
-
TO
-
LVCMOS/LVTTL F
REQUENCY
S
YNTHESIZER
PRELIMINARY
10
100
1k
10k
100k
1M
T
YPICAL
P
HASE
N
OISE
AT
106.25MH
Z
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
-190
-200
106.25MHz
RMS Phase Jitter (Random)
637kHz to 5MHz = 0.78ps (typical)
O
FFSET
F
REQUENCY
(H
Z
)
N
OISE
P
OWER
dBc
Hz
Phase Noise Result by adding
Fibre Channel Filter to raw data
Raw Phase Noise Data
Fibre Channel Filter
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