参数资料
型号: ICS8735AM-21LFT
元件分类: 时钟及定时
英文描述: 8735 SERIES, PLL BASED CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
封装: 7.50 X 12.80 MM, 2.30 MM HEIGHT, ROHS COMPLIANT, MS-013, MO-119, SOIC-20
文件页数: 1/15页
文件大小: 195K
代理商: ICS8735AM-21LFT
8735AM-21
www.icst.com/products/hiperclocks.html
REV. E JUNE 15, 2005
1
Integrated
Circuit
Systems, Inc.
ICS8735-21
700MHZ, DIFFERENTIAL-TO-3.3V LVPECL
ZERO DELAY CLOCK GENERATOR
GENERAL DESCRIPTION
The ICS8735-21 is a highly versatile 1:1 Dif-
ferential-to-3.3V LVPECL clock generator and
a member of the HiPerClock S family of High
Performance Clock Solutions from ICS. The
CLK, nCLK pair can accept most standard dif-
ferential input levels. The ICS8735-21 has a fully integrated
PLL and can be configured as zero delay buffer, multiplier
or divider, and has an output frequency range of 31.25MHz
to 700MHz. The reference divider, feedback divider and
output divider are each programmable, thereby allowing
for the following output-to-input frequency ratios: 8:1, 4:1,
2:1, 1:1, 1:2, 1:4, 1:8. The external feedback allows the
device to achieve “zero delay” between the input clock
and the output clocks. 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 internal output dividers.
FEATURES
1 differential 3.3V LVPECL output pair,
1 differential feedback output pair
Differential CLK, nCLK input pair
CLK, nCLK pair can accept the following differential
input levels: LVDS, LVPECL, LVHSTL, SSTL, HCSL
Output frequency range: 31.25MHz to 700MHz
Input frequency range: 31.25MHz to 700MHz
VCO range: 250MHz to 700MHz
Programmable dividers allow for the following output-to-input
frequency ratios: 8:1, 4:1, 2:1, 1:1, 1:2, 1:4, 1:8
External feedback for “zero delay” clock regeneration
with configurable frequencies
Cycle-to-cycle jitter: 25ps (maximum)
Static phase offset: 50ps ± 100ps
3.3V supply voltage
0°C to 70°C ambient operating temperature
Lead-Free package fully RoHS compliant
HiPerClockS
ICS
BLOCK DIAGRAM
PIN ASSIGNMENT
ICS8735-21
20-Lead, 300-MIL SOIC
7.5mm x 12.8mm x 2.3mm body package
M Package
Top View
CLK
nCLK
MR
VCC
nFB_IN
FB_IN
SEL2
VEE
nQFB
QFB
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
nc
SEL1
SEL0
VCC
PLL_SEL
VCCA
SEL3
VCCO
Q
nQ
PLL_SEL
CLK
nCLK
FB_IN
nFB_IN
SEL0
SEL1
SEL2
SEL3
MR
PLL
8:1, 4:1, 2:1, 1:1,
1:2, 1:4, 1:8
Q
nQ
QFB
nQFB
0
1
÷1, ÷2, ÷4, ÷8,
÷16, ÷32, ÷64
相关PDF资料
PDF描述
ICS8735AM-21 8735 SERIES, PLL BASED CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
ICS8735AM-21T 8735 SERIES, PLL BASED CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
ICS8735AM-21T 8735 SERIES, PLL BASED CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
ICS8735AMI-21LFT 8735 SERIES, PLL BASED CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
ICS8735AMI-21LF 8735 SERIES, PLL BASED CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20
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