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參數資料
| 型號： | ICS8431EMI-01 |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時鐘產生/分配 |
| 英文描述： | 200 MHz, OTHER CLOCK GENERATOR, PDSO28 |
| 封裝： | 7.50 X 18.05 MM, 2.25 MM, MS-013, MO-119, SOIC-28 |
| 文件頁數： | 1/15頁 |
| 文件大小： | 328K |
| 代理商： | ICS8431EMI-01 |
8431EMI-01
www.icst.com/products/hiperclocks.html
REV. A FEBRUARY 4, 2003
1
Integrated
Circuit
Systems, Inc.
ICS8431I-01
200MHZ, LOW JITTER,
CRYSTAL OSCILLATOR-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
XTAL1
XTAL2
SSC_CTL0
SSC_CTL1
GENERAL DESCRIPTION
The ICS8431I-01 is a general purpose clock
frequency synthesizer for IA64/32 applications
and a member of the HiPerClockS family of High
Performance Clock Solutions from ICS. The
ICS8431I-01 consists of one independent low
bandwidth PLL timing channel. A 16.666MHz crystal is used
as the input to the on-chip oscillator. The M divide is config-
ured to produce a fixed output frequency of 200MHz.
Programmable features of the ICS8431I-01 support four
operational modes. The four modes are spread spectrum
clocking (SSC), non-spread spectrum clocking and two test
modes which are controlled by the SSC_CTL[1:0] pins. Un-
like other synthesizers, the ICS8431I-01 can immediately
change spread-spectrum operation without having to reset
the device.
In SSC mode, the output clock is modulated in order to
achieve a reduction in EMI. In one of the PLL bypass test
modes, the PLL is disconnected as the source to the
differential output allowing an external source to be
connnected to the TEST_I/O pin. This is useful for in-
circuit testing and allows the differential output to be driven
at a lower frequency throughout the system clock tree. In the
other PLL bypass mode, the oscillator divider is used as the
source to both the M divide and the Fout divide by 2. This is
useful for characterizing the oscillator and internal dividers.
BLOCK DIAGRAM
PIN ASSIGNMENT
FEATURES
Fully integrated PLL
Differential 3.3V LVPECL output
Crystal oscillator interface
Output frequency of 200MHz
48% to 52% duty cycle
Spread Spectrum Clocking (SSC) fixed at 1/
2% modulation
for environments requiring ultra low EMI. Typical10dB EMI
reduction can be achieved with spread spectrum modulation
PLL bypass modes supporting in-circuit testing and on-chip
functional block characterization
Cycle-to-cycle jitter: 25ps (maximum)
3.3V supply voltage
-40° to 85°C ambient operating temperature
PLL
FOUT
nFOUT
÷ 16
nc
SSC_CTL0
SSC_CTL1
VEE
TEST_I/O
VCC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
nc
VCC
XTAL2
XTAL1
nc
VCCA
VEE
RESERVED
nc
VCCO
FOUT
nFOUT
VEE
ICS8431I-01
28-Lead SOIC
7.5mm x 18.05mm x 2.25mm package body
M Package
Top View
TEST_I/O
OSC
VCO
÷ 2
PHASE
DETECTOR
÷ M
SSC
Control
Logic
HiPerClockS
,&6
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ICS8431I-21 | 制造商:ICS 制造商全稱:ICS 功能描述:350MHZ, LOW JITTER, CRYSTAL OSCILLATOR-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS84320-01 | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:780MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| ICS84320-01K | 制造商:ICS 制造商全稱:ICS 功能描述:780MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| ICS843201AG-375LF | 功能描述:IC SYNTHESIZER 375MHZ 16-TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發生器，PLL，頻率合成器 系列:HiPerClockS™, FemtoClock™ 標準包裝:27 系列:Precision Edge® 類型:頻率合成器 PLL:是 輸入:PECL，晶體 輸出:PECL 電路數:1 比率 - 輸入:輸出:1:1 差分 - 輸入:輸出:無/是 頻率 - 最大:800MHz 除法器/乘法器:是/無 電源電壓:3.135 V ~ 5.25 V 工作溫度:0°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC 包裝:管件 |
| ICS843201AG-375LFT | 功能描述:IC SYNTHESIZER 375MHZ 16-TSSOP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發生器，PLL，頻率合成器 系列:HiPerClockS™, FemtoClock™ 標準包裝:27 系列:Precision Edge® 類型:頻率合成器 PLL:是 輸入:PECL，晶體 輸出:PECL 電路數:1 比率 - 輸入:輸出:1:1 差分 - 輸入:輸出:無/是 頻率 - 最大:800MHz 除法器/乘法器:是/無 電源電壓:3.135 V ~ 5.25 V 工作溫度:0°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC 包裝:管件 |
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