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參數資料
| 型號： | ICS840004I-01 |
| 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： | 1/10頁 |
| 文件大小： | 169K |
| 代理商： | ICS840004I-01 |
Integrated
Circuit
Systems, Inc.
840004AGI-01
www.icst.com/products/hiperclocks.html
REV. A JUNE 28, 2005
1
ICS840004I-01
F
EMTO
C
LOCKS
C
RYSTAL
-
TO
-
LVCMOS/LVTTL F
REQUENCY
S
YNTHESIZER
PRELIMINARY
G
ENERAL
D
ESCRIPTION
The ICS840004I-01 is a 4 output LVCMOS/LVTTL
Synthesizer optimized to generate Ethernet
reference clock frequencies and is a member of
the HiPerClocks
TM
family of high performance
clock solutions from ICS. Using a 25MHz, 18pF
parallel resonant crystal, the following frequencies can be
generated based on the 2 frequency select pins (F_SEL1:0):
156.25MHz, 125MHz, and 62.5MHz. The ICS840004I-01 uses
ICS’ 3
rd
generation low phase noise VCO technology and can
achieve 1ps or lower typical random rms phase jitter, easily
meeting Ethernet jitter requirements. The ICS840004I-01 is
packaged in a small 20-pin TSSOP package.
HiPerClockS
ICS
B
LOCK
D
IAGRAM
F
EATURES
Four LVCMOS/LVTTL outputs, 15
Ω
typical output impedance
Selectable crystal oscillator interface
or LVCMOS single-ended input
Supports the following output frequencies:
156.25MHz, 125MHz and 62.5MHz
RMS phase jitter @ 156.25MHZ (1.875MHz - 20MHz):
0.52ps (typical)
Output supply modes:
Core/Output
3.3V/3.3V
3.3V/2.5V
2.5V/2.5V
-40°C to 85°C ambient operating temperature
Q0
Q1
Q2
Q3
OE
F_SEL1:0
nPLL_SEL
nXTAL_SEL
XTAL_IN
XTAL_OUT
TEST_CLK
MR
OSC
Phase
Detector
VCO
M = ÷25 (fixed)
F_SEL1:0
0 0 ÷4
0 1 ÷5
1 0 ÷10
1 1 ÷5
0
1
1
0
2
N
25MHz
Pullup
Pulldown
Pulldown
Pulldown
Pullup:Pullup
Pulldown
F
REQUENCY
S
ELECT
F
UNCTION
T
ABLE
P
IN
A
SSIGNMENT
ICS840004I-01
20-Lead TSSOP
6.5mm x 4.4mm x 0.92mm
package body
G Package
Top View
F_SEL0
nc
nXTAL_SEL
TEST_CLK
OE
MR
nPLL_SEL
V
DDA
nc
V
DD
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
F_SEL1
GND
Q0
Q1
V
DDO
Q2
Q3
GND
XTAL_IN
XTAL_OUT
s
u
r
e
p
n
)
H
M
(
y
c
n
)
R
e
u
z
q
H
e
r
M
F
5
t
u
2
p
t
u
O
1
L
E
S
_
F
0
L
E
S
_
F
d
D
u
V
5
2
5
2
5
2
5
2
M
e
r
e
d
D
u
V
4
5
1
5
N
e
N
u
V
5
5
5
5
/
M
e
o
R
0
0
1
1
0
1
0
1
2
5
2
5
2
1
5
6
2
1
1
5
0
5
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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相關代理商/技術參數 |
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| ICS840008-01 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840008AR01 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840008AR-01 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840008AR-01T | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840011 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS CRYSTAL-TOLVCMOS/LVTTL CLOCK GENERATOR |
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