参数资料
型号: ICS844021AGI-01LF
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 时钟产生/分配
英文描述: 170 MHz, OTHER CLOCK GENERATOR, PDSO8
封装: 4.40 X 3 MM, 0.925 MM HEIGHT, MO-153, TSSOP-8
文件页数: 1/10页
文件大小: 467K
代理商: ICS844021AGI-01LF
844021AGI-01
www.icst.com/products/hiperclocks.html
REV. A MARCH 29, 2005
1
Integrated
Circuit
Systems, Inc.
ICS844021I-01
FEMTOCLOCKSCRYSTAL-TO- LVDS
CLOCK GENERATOR
PRELIMINARY
GENERAL DESCRIPTION
The ICS844021I-01 is an Ethernet Clock
Generator and a member of the HiPerClocksTM
family of high performance devices from ICS. The
ICS844021I-01 uses an 18pF parallel resonant
crystal over the range of 24.5MHz - 34MHz. For
Ether net applications, a 25MHz cr ystal is used. The
ICS844021I-01 has excellent <1ps phase jitter performance,
over the 1.875MHz - 20MHz integration range. The
ICS844021I-01 is packaged in a small 8-pin TSSOP, making
it ideal for use in systems with limited board space.
FEATURES
(1) Differential LVDS output
Crystal oscillator interface, 18pF parallel resonant crystal
(24.5MHz - 34MHz)
Output frequency range: 122.5MHz - 170MHz
VCO range: 490MHz - 680MHz
RMS phase jitter @ 125MHz, using a 25MHz crystal
(1.875MHz - 20MHz): 0.45ps (typical)
3.3V or 2.5V operating supply
-40°C to 85°C ambient operating temperature
HiPerClockS
ICS
ICS844021I-01
8-Lead TSSOP
4.40mm x 3.0mm x 0.925mm
package body
G Package
Top View
VDDA
GND
XTAL_OUT
XTAL_IN
1
2
3
4
VDD
Q0
nQ0
OE
8
7
6
5
BLOCK DIAGRAM
OSC
Phase
Detector
VCO
490MHz - 680MHz
M = ÷20 (fixed)
N = ÷4 (fixed)
XTAL_IN
XTAL_OUT
Q0
nQ0
COMMON CONFIGURATION TABLE - Gb ETHERNET
PIN ASSIGNMENT
OE
s
t
u
p
n
I
y
c
n
e
u
q
e
r
F
t
u
p
t
u
O
)
z
H
M
(
)
z
H
M
(
y
c
n
e
u
q
e
r
F
l
a
t
s
y
r
CM
N
n
o
i
t
a
c
i
l
p
i
t
l
u
M
N
/
M
e
u
l
a
V
5
20
24
5
2
1
6
.
6
20
24
5
3
.
3
1
3
.
3
30
24
5
6
.
6
1
Pullup
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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