L: output is low level (weak pull down) oscillation stops
SiTime Corporation
Rev. 1.04
990 Almanor Avenue, Suite 200
Sunnyvale, CA 94085
(408) 328-4400
www.sitime.com
Revised Sept. 19, 2008
SiT8002
Description
The SiT8002 oscillator family is composed of the world’s
smallest, high-performance programmable oscillators. The
SiT8002 is suitable for use in clock generation for consumer,
portable, industrial, automotive, and computation applications.
This oscillator family is packaged in standard low-cost plastic
QFN-type IC packages with footprints that match common
quartz surface mount products.
MEMS resonators are 1000x smaller by volume than quartz
resonators and are built in high volume CMOS fabs instead of
small custom manufacturing facilities. Due to their small size,
massive lot sizes, and simpler manufacturing processes
MEMS oscillators are inherently more reliable, have more
consistent performance and are always in stock.
The SiT8002, by eliminating the quartz crystals, has 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
performance of the IC is only guaranteed within the operational specifications not 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 125C, Process, VDD (0 to 3.6V)
–
–
Min.
-65
-0.5
Max.
150
+3.65
6000
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
2.25
1.7
Typ.
3.3
2.5
1.8
-
-
-
-
Max.
3.63
2.75
1.9
70
85
15
200
Unit
V
V
V
°C
°C
pF
ms
Extended Commercial OperatingTemperature
Industrial Operating Temperature
Maximum Load
Capacitance
[2]
VDD Ramp Time
-20
-40
-
0
Environmental Compliance
Parameter
Mechanical Shock
Mechanical Vibration
Temperature Cycle
Solderability
Moisture Sensibility 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 2.5V device can operate from 2.25V to 3.63V with higher output drive, however, the data sheet parameters cannot be guaranteed. Please contact factory for
this option.
2. The output driver strenght can be programmed to drive up to 30pF load. Please contact factory for this option.
Page 2 of 7
SiT8002
DC Electrical Specifications
@VDD = 3.3V ±10%, -40 to 85°C
Parameter
Output Voltage High
Output Voltage Low
Input Voltage High
Input Voltage Low
Operating Current
Standby Current
Power Up Time
Condition
IOH = -9 mA
IOL = 9 mA
Pin 1
Pin 1
Output frequency = 65 MHz, 15 pF load
Output is weakly pulled down, ST = GND
Time from minimum power supply voltage
Min.
90
-
70
-
-
-
-
Typ.
-
-
-
-
-
30
12
Max.
-
10
-
30
22
50
50
Unit
%Vdd
%Vdd
%Vdd
%Vdd
mA
uA
ms
@VDD = 2.5V ±10%, -40 to 85°C
Parameter
Output Voltage High
Output Voltage Low
Input Voltage High
Input Voltage Low
Operating Current
Standby Current
Power Up Time
Condition
IOH = -7 mA
IOL = 7 mA
Pin 1
Pin 1
Output frequency = 65 MHz, 15 pF load
Output is weakly pulled down, ST = GND
Time from minimum power supply voltage
Min.
90
-
70
-
-
-
-
Typ.
-
-
-
-
-
30
12
Max.
-
10
-
30
22
50
50
Unit
%Vdd
%Vdd
%Vdd
%Vdd
mA
uA
ms
@VDD = 1.8V ±5%, -40 to 85°C
Parameter
Output Voltage High
Output Voltage Low
Input Voltage High
Input Voltage Low
Operating Current
Standby Current
Power Up Time
Condition
IOH = -5 mA
IOL = 5 mA
Pin 1
Pin 1
Output frequency = 65 MHz, 15 pF load
Output is weakly pulled down, ST = GND
Time from minimum power supply voltage
Min.
90
-
70
-
-
-
-
Typ.
-
-
-
-
-
30
12
Max.
-
10
-
30
19
50
50
Unit
%Vdd
%Vdd
%Vdd
%Vdd
mA
uA
ms
Page 3 of 7
SiT8002
AC Electrical Specifications
@VDD = 3.3V ±10%, -40 to 85°C
Parameter
Clock Output Frequency
Frequency
Tolerance
[3]
Inclusive of initial tolerance, operating temper-
ature, rated power supply voltage change, load
change,aging, shock and vibration
First year
Output frequency= 1 MHz to 125 MHz
15 pF Load, 20% to 80% VDD
15 pF Load, 80% to 20% VDD
Output frequency = 24 MHz
Output frequency = 100 MHz
Condition
Min.
1
-30
-50
-100
-
45
-
-
-
-
Typ.
-
-
-
-
-
-
1.0
1.0
-
-
Max.
125
+30
+50
+100
1
55
2.0
2.0
±98
±60
Unit
MHz
ppm
ppm
ppm
ppm
%
ns
ns
ps
ps
Aging
Clock Output Duty Cycle
Clock Output Rise Time
Clock Output Fall Time
Pk-pk Period Jitter
@VDD = 2.5V ±10%, -40 to 85°C
Parameter
Clock Output Frequency
Frequency Tolerance
[3]
Inclusive of initial tolerance, operating temper-
ature, rated power supply voltage change, load
change,aging, shock and vibration
First year
Output frequency= 1MHz to 125MHz
15 pF Load, 20% to 80% VDD
15 pF Load, 80% to 20% VDD
Output frequency = 24 MHz
Output frequency = 100 MHz
Condition
Min.
1
-30
-50
-100
-
45
-
-
-
-
Typ.
-
-
-
-
-
-
1.0
1.0
-
-
Max.
125
+30
+50
+100
1
55
2.0
2.0
±130
±60
Unit
MHz
ppm
ppm
ppm
ppm
%
ns
ns
ps
ps
Aging
Clock Output Duty Cycle
Clock Output Rise Time
Clock Output Fall Time
Pk-pk Period Jitter
@VDD = 1.8V ±5%, -40 to 85°C
Parameter
Clock Output Frequency
Frequency
Tolerance
[3]
Inclusive of initial tolerance, operating temper-
ature, rated power supply voltage change, load
change,aging, shock and vibration
First year
Output frequency= 1 MHz to 65MHz
Output frequency= 65 MHz to 125MHz
Clock Output Rise Time
Clock Output Fall Time
Pk-pk Period Jitter
15 pF Load, 20% to 80% VDD
15 pF Load, 80% to 20% VDD
Output frequency = 24 MHz
Output frequency = 100 MHz
Condition
Min.
1
-50
-100
-
45
40
-
-
-
-
Typ.
-
-
-
-
-
-
1.0
1.0
-
-
Max.
125
+50
+100
1
55
60
2.0
2.0
±185
±100
Unit
MHz
ppm
ppm
ppm
%
%
ns
ns
ps
ps
Aging
Clock Output Duty Cycle
Notes:
3. ±30 ppm is available only over extended commercial temperature range from-20 °C to +70 °C and VDD=2.5V or 3.3V.
语音作为自然的人机接口，可以使车载导航系统实现更安全、更人性化的操作。通过国内外车载导航系统的功能对比可知，支持语音交互是车载导航系统的一个发展趋势。另外，市场信息服务公司J.D Power and Associates的调研数据也表明，56％的消费者更倾向于选择声控的导航系统。因此，开发车载语音导航系统是很有意义的。目前，国内已经具备开发车载语音导航系统的技术基础，特别是文语转换TTS技术...[详细]
DSP 与 ARM 处理器
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
