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參數(shù)資料
| 型號： | ICS8421004I |
| 英文描述： | FEMTOCLOCKS⑩ CRYSTAL-TO-HSTL FREQUENCY SYNTHESIZER |
| 中文描述： | FEMTOCLOCKS⑩晶體對HSTL頻率合成器 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大小： | 194K |
| 代理商： | ICS8421004I |
8421004AGI
www.icst.com/products/hiperclocks.html
REV. A MARCH 29, 2005
1
Integrated
Circuit
Systems, Inc.
ICS8421004I
F
EMTO
C
LOCKS
C
RYSTAL
-
TO
-
HSTL F
REQUENCY
S
YNTHESIZER
PRELIMINARY
G
ENERAL
D
ESCRIPTION
The ICS8421004I is a 4 output HSTL Synthesizer
optimized to generate Fibre Channel reference
clock frequencies and is a member of the
HiPerClocks
TM
family of high performance clock
solutions from ICS. Using a 26.5625MHz 18pF
parallel resonant crystal, the following frequencies can be
generated based on the two frequency select pins (F_SEL[1:0]):
212.5MHz, 187.5MHz, 159.375MHz, 156.25, 106.25MHz and
53.125MHz. The ICS8421004I uses ICS’ 3
rd
generation low
phase noise VCO technology and can achieve 1ps or lower
typical rms phase jitter, easily meeting Fibre Channel jitter
requirements. The ICS8421004I is packaged in a small 24-pin
TSSOP package.
F
EATURES
Four HSTL outputs (VOHmax = 1.4)
Selectable crystal oscillator interface
or LVCMOS/LVTTL single-ended input
Supports the following output frequencies: 212.5MHz,
187.5MHz, 159.375MHz, 156.25MHz, 106.25MHz, 53.125MHz
VCO range: 560MHz - 680MHz
RMS phase jitter @ 212.5MHz, using a 26.5625MHz crystal
(637kHz - 10MHz): 0.59ps (typical)
Power supply modes:
Core/Output
3.3V/1.8V
2.5V/1.8V
-40°C to 85°C ambient operating temperature
HiPerClockS
ICS
P
IN
A
SSIGNMENT
1
0
1
0
Phase
Detector
VCO
M = 24 (fixed)
F_SEL[1:0]
0 0 ÷3
0 1 ÷4
1 0 ÷6
1 1 ÷12
2
OSC
ICS8421004I
24-Lead TSSOP
4.40mm x 7.8mm x 0.92mm
package body
G Package
Top View
Q0
nQ1
Q1
V
DDO
Q0
nQ0
MR
nPLL_SEL
nc
V
DDA
F_SEL0
V
DD
F_SEL1
1
2
3
4
5
6
7
8
9
10
11
12
nQ2
Q2
V
DDO
Q3
nQ3
GND
nc
nXTAL_SEL
TEST_CLK
GND
XTAL_IN
XTAL_OUT
24
23
22
21
20
19
18
17
16
15
14
13
B
LOCK
D
IAGRAM
t
n
u
e
)
H
6
6
6
6
1
4
3
p
u
n
q
e
M
(
5
2
5
2
5
2
5
2
0
2
4
2
y
c
r
F
s
u
r
e
p
n
t
c
u
n
)
H
5
1
3
5
2
0
1
1
5
2
5
1
5
8
1
p
e
t
u
u
q
M
2
1
O
e
r
y
F
(
1
L
E
S
_
F
0
L
E
S
_
F
d
D
u
V
4
2
4
2
4
2
4
2
4
2
4
2
M
e
r
e
d
D
u
V
3
4
6
1
4
3
N
e
N
r
8
6
4
2
6
8
/
M
e
e
u
V
d
D
5
5
5
5
6
6
5
7
2
2
2
2
0
0
1
1
0
0
0
1
0
1
1
0
5
7
5
5
2
2
5
F
REQUENCY
S
ELECT
F
UNCTION
T
ABLE
F_SEL[1:0]
nPLL_SEL
TEST_CLK
XTAL_IN
XTAL_OUT
nXTAL_SEL
MR
nQ0
Q1
nQ1
Q2
nQ2
Q3
nQ3
Pulldown
Pulldown
26.5625MHz
Pulldown
Pulldown
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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| ICS8421004I-01 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-HSTL FREQUENCY SYNTHESIZER |
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