參數(shù)資料
型號(hào): ICS840001I
英文描述: FEMTOCLOCKS⑩ CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER
中文描述: FEMTOCLOCKS⑩晶體到的LVCMOS / LVTTL頻率合成器
文件頁數(shù): 1/11頁
文件大小: 175K
代理商: ICS840001I
840001AGI
www.icst.com/products/hiperclocks.html
REV. A JUNE 20, 2005
1
Integrated
Circuit
Systems, Inc.
ICS840001I
F
EMTO
C
LOCKS
C
RYSTAL
-
TO
-
LVCMOS/LVTTL C
LOCK
G
ENERATOR
PRELIMINARY
G
ENERAL
D
ESCRIPTION
The ICS840001I is a Fibre Channel Clock
Generator and a member of the HiPerClocks
TM
family of high performance devices from ICS. The
ICS840001I uses a 26.5625MHz crystal to
synthesize either 106.25MHz or 212.5MHz, using
the FREQ_SEL pin. The ICS840001I has excellent phase jitter
performance, over the 637kHz – 5MHz integration range. The
ICS840001I is packaged in a small 8-pin TSSOP, making it
ideal for use in systems with limited board space.
F
EATURES
1 LVCMOS/LVTTL output, 7
Ω
typical output impedence
Crystal oscillator interface designed for 26.5625MHz,
18pF parallel resonant crystal
Selectable 106.25MHz or 212.5MHz output frequency
VCO range: 560MHz to 680MHz
RMS phase jitter @ 106.25MHz, using a 26.5625MHz crystal
(637kHz - 5MHz): 0.70ps (typical)
3.3V or 2.5V operating supply
-40°C to 85°C ambient operating temperature
HiPerClockS
ICS
ICS840001I
8-Lead TSSOP
4.40mm x 3.0mm x 0.925mm
package body
G Package
Top View
V
DDA
OE
XTAL_OUT
XTAL_IN
1
2
3
4
V
DD
Q
GND
FREQ_SEL
8
7
6
5
t
u
_
p
Q
0
n
E
s
e
n
e
u
q
e
r
F
t
u
p
t
u
O
L
E
S
R
F
)
a
D
z
H
(
z
M
H
M
5
1
5
2
2
0
1
1
z
H
M
5
2
6
5
2
:
y
C
B
LOCK
D
IAGRAM
P
IN
A
SSIGNMENT
F
UNCTION
T
ABLE
OSC
Phase
Detector
VCO
637.5MHz w/
26.5625MHz Ref.
M = ÷24 (fixed)
1
0
÷6
÷3
XTAL_IN
XTAL_OUT
OE
Q
FREQ_SEL
(Pullup)
(Pulldown)
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.
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