Document Outline
- General Description
- Features
- Select Function Table
- Block Diagram
- Pin Assignment
- Pin Descriptions
- Pin Characteristics
- Absolute Maximum Ratings
- Power Supply 3.3V DC Characteristics
- Power Supply 3.3V/2.5V DC Characteristics
- LVCMOS DC Characteristics
- Crystal Characteristics
- 3.3V AC Characteristics
- 3.3V/2.5V AC Characteristics
- Parameter Measurement Information
- Application Information
- Reliability Information
- Transistor Count
- Package Outline
- Package Dimensions
- Ordering Information
Integrated
Circuit
Systems, Inc.
840002BG-32
www.icst.com/products/hiperclocks.html
REV. A JUNE 27, 2005
1
ICS840002-32
F
EMTO
C
LOCKS
TM C
RYSTAL
-
TO
-
LVCMOS/LVTTL F
REQUENCY
S
YNTHESIZER
PRELIMINARY
G
ENERAL
D
ESCRIPTION
The ICS840002-32 is a 2 output LVCMOS/
LVTTL Synthesizer optimized to generate
Fibre Channel or Serial ATA reference clock
f r e q u e n c i e s a n d i s a m e m b e r o f t h e
HiPerClocks
TM
family of high perfor mance
clock solutions from ICS. Using an 18pF parallel resonant
crystal, the following frequencies can be generated based
on 1 frequency select pin (SEL): 106.25MHz and 75MHz,
or 212.5MHz. The ICS840002-32 uses ICS' 3
rd
generation
low phase noise VCO technology and can achieve 1ps or
lower typical rms phase jitter, easily meeting Fibre Channel
and Serial ATA jitter requirements. The ICS840002-32 is
packaged in a small 8-pin TSSOP package.
HiPerClockSTM
ICS
B
LOCK
D
IAGRAM
P
IN
A
SSIGNMENT
F
EATURES
Two LVCMOS/LVTTL outputs, 15
typical output impedance
Crystal oscillator interface
Output frequency range: 75MHz and 106.25MHz,
or 212.5MHz
RMS phase jitter at 106.25MHZ (637kHz - 5MHz):
0.86ps (typical)
Full 3.3V or 3.3V core/2.5V output supply mode
0C to 70C ambient operating temperature
XTAL_IN
XTAL_OUT
FemtoClockTM
ICS840002-32
8-Lead TSSOP
4.40mm x 3.0mm x 0.925mm
package body
G Package
Top View
V
DD
XTAL_OUT
XTAL_IN
GND
1
2
3
4
SEL
Q0
V
DDO
Q1
8
7
6
5
Q0
Q1
SEL
S
ELECT
F
UNCTION
T
ABLE
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2
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1
1
5
7
5
.
2
1
2
26.5625MHz
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.
Integrated
Circuit
Systems, Inc.
840002BG-32
www.icst.com/products/hiperclocks.html
REV. A JUNE 27, 2005
2
ICS840002-32
F
EMTO
C
LOCKS
TM C
RYSTAL
-
TO
-
LVCMOS/LVTTL F
REQUENCY
S
YNTHESIZER
PRELIMINARY
T
ABLE
1. P
IN
D
ESCRIPTIONS
T
ABLE
2. P
IN
C
HARACTERISTICS
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Integrated
Circuit
Systems, Inc.
840002BG-32
www.icst.com/products/hiperclocks.html
REV. A JUNE 27, 2005
3
ICS840002-32
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
,
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DD
= V
DDO
= 3.3V5%, T
A
= 0C
TO
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3C. LVCMOS/LVTTL DC C
HARACTERISTICS
,
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DD
= 3.3V5%, V
DDO
= 3.3V5%
OR
2.5V5%, T
A
= 0C
TO
70C
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
101.7C/W (0 mps)
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.
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Integrated
Circuit
Systems, Inc.
840002BG-32
www.icst.com/products/hiperclocks.html
REV. A JUNE 27, 2005
4
ICS840002-32
F
EMTO
C
LOCKS
TM C
RYSTAL
-
TO
-
LVCMOS/LVTTL F
REQUENCY
S
YNTHESIZER
PRELIMINARY
T
ABLE
5A. AC C
HARACTERISTICS
,
V
DD
= V
DDO
= 3.3V5%, T
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TO
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Integrated
Circuit
Systems, Inc.
840002BG-32
www.icst.com/products/hiperclocks.html
REV. A JUNE 27, 2005
5
ICS840002-32
F
EMTO
C
LOCKS
TM C
RYSTAL
-
TO
-
LVCMOS/LVTTL F
REQUENCY
S
YNTHESIZER
PRELIMINARY
P
ARAMETER
M
EASUREMENT
I
NFORMATION
t
PERIOD
t
PW
t
PERIOD
odc =
V
DDO
2
x 100%
t
PW
Q0, Q1
RMS P
HASE
J
ITTER
3.3V C
ORE
/2.5V O
UTPUT
L
OAD
AC T
EST
C
IRCUIT
3.3V C
ORE
/3.3V O
UTPUT
L
OAD
AC T
EST
C
IRCUIT
SCOPE
Qx
LVCMOS
1.65V5%
-1.65V5%
O
UTPUT
S
KEW
Clock
Outputs
20%
80%
80%
20%
t
R
t
F
V
DD
,
V
DDO
GND
Phase Noise Mask
Offset Frequency
f
1
f
2
Phase Noise Plot
RMS Jitter = Area Under the Masked Phase Noise Plot
Noise P
o
w
er
tsk(o)
V
DDO
2
V
DDO
2
Qx
Qy
O
UTPUT
R
ISE
/F
ALL
T
IME
SCOPE
Qx
LVCMOS
2.05V5%
-1.25V5%
V
DD
GND
O
UTPUT
D
UTY
C
YCLE
/P
ULSE
W
IDTH
/P
ERIOD
1.25V5%
V
DDO
Integrated
Circuit
Systems, Inc.
840002BG-32
www.icst.com/products/hiperclocks.html
REV. A JUNE 27, 2005
6
ICS840002-32
F
EMTO
C
LOCKS
TM C
RYSTAL
-
TO
-
LVCMOS/LVTTL F
REQUENCY
S
YNTHESIZER
PRELIMINARY
R
ELIABILITY
I
NFORMATION
T
RANSISTOR
C
OUNT
The transistor count for ICS840002-32 is: 2322
T
ABLE
6.
JA
VS
. A
IR
F
LOW
T
ABLE
FOR
8 L
EAD
TSSOP
JA
by Velocity (Meters Per Second)
A
PPLICATION
I
NFORMATION
C
RYSTAL
I
NPUT
I
NTERFACE
The ICS840002-32 has been characterized with 18pF paral-
lel resonant crystals. The capacitor values shown in
Figure 1
Figure 1. C
RYSTAL
I
NPU
t I
NTERFACE
below were determined using an 18pF parallel resonant crys-
tal and were chosen to minimize the ppm error.
ICS840002-32
0
1
2.5
Multi-Layer PCB, JEDEC Standard Test Boards
101.7C/W
90.5C/W
89.8C/W
C1
33p
X1
18pF Parallel Crystal
C2
27p
XTAL_OUT
XTAL_IN
Integrated
Circuit
Systems, Inc.
840002BG-32
www.icst.com/products/hiperclocks.html
REV. A JUNE 27, 2005
7
ICS840002-32
F
EMTO
C
LOCKS
TM C
RYSTAL
-
TO
-
LVCMOS/LVTTL F
REQUENCY
S
YNTHESIZER
PRELIMINARY
P
ACKAGE
O
UTLINE
- G S
UFFIX
FOR
8 L
EAD
TSSOP
T
ABLE
7. P
ACKAGE
D
IMENSIONS
Reference Document: JEDEC Publication 95, MO-153
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7
.
0
0
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a
a
a
-
-
0
1
.
0
Integrated
Circuit
Systems, Inc.
840002BG-32
www.icst.com/products/hiperclocks.html
REV. A JUNE 27, 2005
8
ICS840002-32
F
EMTO
C
LOCKS
TM C
RYSTAL
-
TO
-
LVCMOS/LVTTL F
REQUENCY
S
YNTHESIZER
PRELIMINARY
T
ABLE
8. O
RDERING
I
NFORMATION
While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems, Incorporated (ICS) assumes no responsibility for either its use
or for infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use
in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are
not recommended without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does not authorize or warrant any ICS
product for use in life support devices or critical medical instruments.
The aforementioned trademarks, HiPerClockS and F
EMTO
C
LOCKS
are trademarks of Integrated Circuit Systems, Inc. or its subsidiaries in the United States and/or other countries.
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