參數(shù)資料
型號: ICS8602BYLF
元件分類: 時鐘及定時
英文描述: PLL BASED CLOCK DRIVER, 9 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32
封裝: 7 X 7 MM, 1.40 MM HEIGHT, MS-026, LQFP-32
文件頁數(shù): 1/10頁
文件大?。?/td> 148K
代理商: ICS8602BYLF
8602BY
www.icst.com/products/hiperclocks.html
REV. F APRIL 16, 2003
1
Integrated
Circuit
Systems, Inc.
ICS8602
ZERO DELAY, DIFFERENTIAL-TO-LVCMOS/LVTTL
CLOCK GENERATOR
PRELIMINARY
GENERAL DESCRIPTION
The ICS8602 is a high performance, low skew,
1-to-9 Differential-to-LVCMOS/LVTTL Zero De-
lay Buffer and a member of the HiPerClockS
family of High Performance Clocks Solutions
from ICS. The CLK, nCLK pair can accept most
standard differential input levels. The VCO operates at a fre-
quency range of 250MHz to 500MHz. The external feedback
allows the device to achieve “zero delay” between the input
clock and the output clocks. The device is designed only for
1:1 input/output frequency ratios. The output divider allows a
wide input/output frequency range with the 250MHz to
500MHz VCO. The PLL_SEL pin can be used to bypass the
PLL for system test and debug purposes. In bypass mode,
the reference clock is routed around the PLL and into the in-
ternal output dividers.The low impedance LVCMOS/LVTTL out-
puts are designed to drive 50
series or parallel terminated
transmission lines. The effective fanout can be doubled by
utilizing the ability of the outputs to drive two series termi-
nated lines. The differential reference clock input will accept
any differential signal levels.
BLOCK DIAGRAM
PIN ASSIGNMENT
FEATURES
Fully integrated PLL
9 LVCMOS/LVTTL outputs, 7 typical output impedance
CLK, nCLK pair can accept the following differential
input levels: LVPECL, LVDS, LVHSTL, SSTL, HCSL
Output frequency range: 15.625MHz to 250MHz
Input frequency range: 15.625MHz to 250MHz
VCO range: 250MHz to 500MHz
External feedback for “zero delay” clock regeneration
with configurable frequencies
Cycle-to-cycle jitter: 36ps (typical)
Output skew: 125ps (maximum)
Static Phase Offset: TBD±100ps (typical)
3.3V supply voltage
0°C to 70°C ambient operating temperature
32 31 30 29 28 27 26 25
9
10 11 12 13 14 15 16
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
VDDO
Q5
GND
Q4
VDDO
Q3
GND
MR/nOE
VDDA
VDD
CLK
nCLK
GND
DIV_SEL0
DIV_SEL1
GND
Q2
V
DDO
Q1
GND
Q0
V
DDO
FB_IN
GND
Q6
V
DDO
Q7
GND
Q8
V
DDO
PLL_SEL
32-Lead LQFP
7mm x 7mm x 1.4mm package body
Y Package
Top View
ICS8602
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.
HiPerClockS
,&6
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
SEL0
SEL1
CLK
nCLK
FB_IN
PLL_SEL
MR/nOE
0
1
PLL
÷2
÷4
÷8
÷16
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