• Ultra-reliable start up and greater immunity from interfer-
ence
• Replaces expensive single-ended SAW oscillators
• More cost effective than quartz oscillators, quartz crystals
and clock ICs.
• Completely quartz-free
Applications
• Communications and Networking Applications
• Consumer Electronics Applications
• Automotive Applications
• Industrial Applications
• Gigabit Ethernet
• 10 Gigabit Ethernet
• Fiber Channel
• Ethernet
• SATA/SAS
• USB 2.0
• PCI-Express
Block Diagram
VDD
OUT
Pinout
ST/OE
M EM S
R eson ator
H igh
P erform ance
S ynthesizer
1
4
VDD
GND
2
3
OUT
S T/O E
GND
Pin Description
Pin No. Name
1
2
3
4
ST/OE
GND
OUT
VDD
Pin Description
Standby/ Output Enable
Connect to Ground
1 to 200 MHz Programmed Clock
output
Connect to 1.8V / 2.5V / 2.8V / 3.3V
Pin1
Pin #1 Functionality
OE
H or Open; specified frequency output
L: output is high impedance
ST
H or Open; specified frequency output
L: output is low level (weak pull down) oscillation stops
SiTime Corporation
Rev. 1.10
990 Almanor Avenue
Sunnyvale, CA 94085
(408) 328-4400
www.sitime.com
Revised June 9, 2010
SiT8102
1 to 200 MHz High Performance Oscillator
Description
The SiT8102 is the next generation of the SiT8002 program-
mable oscillator with lower phase noise, lower jitter, and a
wider frequency range. SiTime oscillators are the smallest,
high-performance programmable oscillator available and are
suitable for use in high speed serial communications,
consumer, portable, industrial, automotive and computation.
This oscillator is packaged in standard low-cost plastic and
chip-scale IC packages.
System reliability is also increased with the SiT8102 by elimi-
nating the quartz crystal and improved immunity to the
environmental effects of vibration, shock, strain, and humidity.
To order samples, go to www.sitime.com and click on Request
Sample” link.
Absolute Maximum Ratings
Attempted operation outside the absolute maximum ratings of the part may cause permanent damage to the part. Actual perfor-
mance of the IC is only guaranteed within the operational specifications, not at absolute maximum ratings.
Ab
solute Maximum Table
Parameter
Storage Temperature
VDD
Electrostatic Discharge
Theta JA ( with copper plane on VDD and GND)
Theta JC (with PCB traces of 0.010 inch to all pins)
Soldering Temperature (follow standard Pb free soldering guidelines)
Number of Program Writes
Program Retention over -40 to 125 °C, Process, VDD (0 to 3.65V)
Min.
-65
-0.5
–
–
–
–
–
–
Max.
150
+3.66
2000
75
24
260
1
1,000+
Unit
°C
V
V
°C/W
°C/W
°C
NA
years
Operating Conditions
Parameter
Supply Voltages, VDD
[1]
Min.
2.97
2.52
2.25
1.7
Commercial Operating Temperature
Extended Commercial Operating Temperature
Industrial Operating Temperature
Maximum Load Capacitance
[2]
0
-20
-40
–
Typ.
3.3
2.8
2.5
1.8
–
–
–
–
Max.
3.63
3.08
2.75
1.9
70
70
85
15
Unit
V
V
V
V
°C
°C
°C
pF
Environmental Compliance
Parameter
Mechanical Shock
Mechanical Vibration
Temperature Cycle
Solderability
Moisture Sensitivity Level
Condition/Test Method
MIL-STD-883F, Method 2002
MIL-STD-883F, Method 2007
JESD22, Method A104
MIL-STD-883F, Method 2003
MSL1 @ 260°C
Notes:
1. The 3.3V device can operate from 2.25V to 3.63V with higher output drive strength, however, the data sheet specifications cannot be guaranteed. Please contact
factory for this option.
2. The output driver strength can be programmed to drive up to 50pF load. Please contact factory for this option.
Compiling Xilinx HDL Libraries for ModelSim SE Simulator
Language => verilog
Backing up setup files if any...
Source Tools ('AUTO_DETECT') =>
ERROR:CAEInterfaces:326 - COMPX ......
当今的计算机外部设备，都在追求高速度和高通用性。为了满足用户的需求，以Intel为首的七家公司于1994年推出了USB（Universal Serial Bus，通用串行总线）总线协议，专用于低、中速的计算机外设。目前，USB端口已成为微机主板的标准端口；而在不久的将来，所有的微机外设，包括键盘、鼠标、显示器、打印机、数字相机、扫描仪和游戏柄等等，都将通过USB与主机相连。
...[详细]
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