參數(shù)資料
型號(hào): ICS8731CY-01LFT
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類(lèi): 時(shí)鐘及定時(shí)
英文描述: PLL BASED CLOCK DRIVER, 11 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48
封裝: 7 X 7 MM, 1.40 MM HEIGHT, MS-026, LQFP-48
文件頁(yè)數(shù): 1/16頁(yè)
文件大小: 531K
代理商: ICS8731CY-01LFT
8731CY-01
www.icst.com/products/hiperclocks.html
REV. A JUNE 6, 2006
1
Integrated
Circuit
Systems, Inc.
ICS8731-01
LOW SKEW, 1-TO-11 DIFFERENTIAL-TO-3.3V LVPECL
CLOCK MULTIPLIER / ZERO DELAY BUFFER
BLOCK DIAGRAM
PIN ASSIGNMENT
FEATURES
Eleven differential 3.3V LVPECL outputs
Differential reference clock input pair
REF_CLK, nREF_CLK pair can accept the following
differential input levels: LVPECL, LVDS, LVHSTL, SSTL,
HCSL
Maximum output frequency: 700MHz
Maximum reference clock input frequency: 200MHz
VCO range: 250MHz - 700MHz
Accepts any single-ended input signal with a resistor bias
on nCLK input
External feedback for zero delay capabilitiy
Output skew: 70ps (maximum)
Cycle-to-cycle jitter: 65ps (maximum)
Full 3.3V operating supply
0°C to 70°C ambient operating temperature
Available in both standard and lead-free RoHS compliant
packages
48 47 46 45 44 43 42 41 40 39 38 37
13 14 15 16 17 18 19 20 21 22 23 24
1
2
3
4
5
6
7
8
9
10
11
12
36
35
34
33
32
31
30
29
28
27
26
25
MR
VCCO
Q8
nQ8
Q9
nQ9
VEE
Q10/FB_OUT
nQ10/nFB_OUT
VCCO
FB_IN
nFB_IN
VCCO
nQ3
Q3
nQ2
Q2
VEE
nQ1
Q1
nQ0
Q0
VCCO
nc
DIV_SEL2
DIV_SEL1
DIV_SEL0
V
CCA
V
EE
REF_CLK
nREF_CLK
FB_SEL1
FB_SEL0
V
CC
V
EE
nc
PLL_SEL
V
CCO
Q4
nQ4
Q5
nQ5
V
EE
Q6
nQ6
Q7
nQ7
V
CCO
48-Lead LQFP
7mm x 7mm x 1.4mm package body
Y Package
Top View
GENERAL DESCRIPTION
The ICS8731-01 is a low voltage, low skew,
1-to-11 Differential-to-3.3V LVPECL Clock Mul-
tiplier/Zero Delay Buffer and a member of the
HiPerClockS family of High Performance
Clock Solutions from ICS. With output frequen-
cies up to 700MHz the ICS8731-01 is targeted at high perfor-
mance clock applications. Along with a fully integrated PLL
the ICS8731-01 contains frequency configurable, differential
outputs and external feedback inputs for multiplying clock
frequencies and regenerating clocks with “zero delay”. Fre-
quency multiplication is achieved by utilizing the separate
feedback and clock output dividers. The value of the multi-
plier is determined by the ratio of the feedback divider, M, to
the output divider, N. For multiplier values greater than 1,
M must be greater than N. For multiplier values less than 1,
M must be less than N. The zero delay mode is achieved
with M and N at equal values. The divide values of the clock
and feedback outputs are controlled by the DIV_SEL0:2 and
FB_SEL0:1 inputs, respectively. The ICS8731-01 accepts any
differential signal and translates it to differential 3.3V LVPECL
output levels.
ICS8731-01
HiPerClockS
ICS
PLL
0
1
÷2
÷4
÷6
÷8
÷1
÷2
÷4
÷6
÷8
Q0:Q9
nQ0:nQ9
Q10/FB_OUT
nQ10/nFB_OUT
100
000
001
010
011
00
01
10
11
DIV_SEL0
DIV_SEL1
DIV_SEL2
REF_CLK
nREF_CLK
FB_IN
nFB_IN
PLL_SEL
MR
FB_SEL1
FB_SEL0
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