f = 40 MHz, all Vdds. For other freq, T_oe = 100 ns + 3 clock
periods
See Figure 8 for resume timing diagram
f = 20 MHz, Vdd = 2.5V, 2.8V or 3.3V
f = 20 MHz, Vdd = 1.8V
f = 20 MHz, Integration bandwidth = 12 kHz to 20 MHz, All Vdds
LVCMOS Output Characteristics
Output Low Voltage
VOL
–
–
10%
Vdd
Input Characteristics
Input Pull-up Impedance
Input Capacitance
Startup Time
OE Enable/Disable Time
Resume Time
RMS Period Jitter
RMS Phase Jitter (random)
Z_in
C_in
T_start
T_oe
T_resume
T_jitt
T_phj
–
–
–
–
–
–
–
–
100
5
–
–
7
1.5
2
0.5
250
–
10
180
10
Jitter
2
3
1
ps
ps
ps
kΩ
pF
ms
ns
ms
Startup and Resume Timing
Notes:
1. All electrical specifications in the above table are specified with 15 pF output load and for all Vdd(s) unless otherwise stated.
2. The typical value of any parameter in the Electrical Characteristics table is specified for the nominal value of the highest voltage option for that parameter and at
25°C temperature.
3. All max and min specifications are guaranteed across rated voltage variations and operating temperature ranges, unless specified otherwise
4. Initial tolerance is measured at Vin = Vdd/2
5. Absolute Pull Range (APR) is defined as the guaranteed pull range over temperature and voltage.
6. APR = pull range (PR) - frequency stability (F_stab) - Aging (F_aging)
Rev. 1.01
Page 2 of 11
www.sitime.com
SiT3808
1 MHz to 80 MHz High Performance MEMS VCXO
The Smart Timing Choice
The Smart Timing Choice
Table 2. Pin Description. 4-Pin Configuration
(For 2.5 x 2.0 mm and 3.2 x 2.5 mm packages)
Pin
1
2
3
4
Symbol
VIN
GND
CLK
VDD
Input
Power
Output
Power
Electrical ground
Oscillator output
Power supply voltage
[7]
GND
2
3
Top View
Functionality
VIN
1
4
0-Vdd: produces voltage dependent frequency change
VDD
CLK
Note:
7. A capacitor value of 0.1 µF between VDD and GND is recommended.
Figure 1.
Table 3. Pin Description. 6-Pin Configuration
(For 5.0 x 3.2 mm and 7.0 x 5.0 mm packages)
Pin
1
Symbol
VIN
Input
No
Connect
2
NC/OE/ ST
Output
Enable
Standby
3
4
5
6
GND
CLK
NC
VDD
Power
Output
No
Connect
Power
Functionality
0-Vdd: produces voltage dependent frequency change
H or L or Open: No effect on output frequency or other device
functions
H or Open
[8]
: specified frequency output
L: output is high
H or Open
[8]
: specified frequency output
L: output is low (weak pull down)
[9]
. Oscillation stops
Electrical ground
Oscillator output
H or L or Open: No effect on output frequency or other device
functions
Power supply voltage
[10]
VIN
NC/OE/ST
GND
1
6
Top View
VDD
NC
CLK
2
5
3
4
Figure 2.
Notes:
8. In OE or ST mode, a pull-up resistor of 10 kΩ or less is recommended if pin 2 in the 6-pin package is not externally driven. If pin 2 needs to be left floating, use
the NC option
9. Typical value of the weak pull-down impedance is 5 mΩ
10. A capacitor value of 0.1 µF between VDD and GND is recommended.
Table 4. Absolute Maximum Limits
Attempted operation outside the absolute maximum ratings may cause permanent damage to the part. Actual performance of
the IC is only guaranteed within the operational specifications, not at absolute maximum ratings.
Parameter
Storage Temperature
VDD
Electrostatic Discharge
Soldering Temperature (follow standard Pb free soldering guidelines)
Min.
-65
-0.5
–
–
Max.
150
4
2000
260
Unit
°C
V
V
°C
Table 5. Thermal Consideration
Parameter
7050
5032
3225
2520
JA, 4 Layer Board
(°C/W)
191
97
109
117
JA, 2 Layer Board
(°C/W)
263
199
212
222
JC, Bottom
(°C/W)
30
24
27
26
Table 6. 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
Rev. 1.01
Page 3 of 11
www.sitime.com
SiT3808
1 MHz to 80 MHz High Performance MEMS VCXO
The Smart Timing Choice
The Smart Timing Choice
Phase Noise Plot
-100
-110
-120
-130
-140
-150
-160
-170
3
10
Integrated random phase jitter (RMS, 12kHz-5MHz): 0.52ps
PWM is a working mode of Timer, which requires the use of two libraries, Timer and Pin. Let's take a look at a basic PWM example to drive LED3 and LED4. [code]from pyb import Pin, Timer tm2=Timer(2, f...
I'm debugging the SDIO of 476 to drive an SD card. I found that the SDIO register SDIO_CLKCR can only be configured once, and it cannot be modified no matter how long the delay is. According to the de...
I have been using STM32 for a long time, but I have never used its AD, and I don’t know much about it. I used the 12-bit AD of 430 before, and I felt that the CPU power consumption was low and stable,...
Because of the design concept of low power consumption, I used Bluetooth transmission to communicate between MSP430FR5969 and PC. How to use USB Dongle to send and receive data is what I have been stu...
Current Development Status of DVR Market
A DVR, or digital video recorder, uses a hard disk for recording, unlike traditional analog video recorders. It's often called a DVR because it's a com...[Details]
Capable of providing precise and efficient thermal management for artificial intelligence computing power, intelligent sensing and autonomous driving systems
Shenzhen, ...[Details]
The difference between a series inverter and a parallel inverter is that they use different oscillation circuits. A series inverter connects L, R, and C in series, while a parallel inverter connect...[Details]
Previously, Positive Motion Technology shared with you the firmware upgrade of motion controller, ZBasic program development, ZPLC program development, communication with touch screen and input/out...[Details]
introduction
In recent years, multi-touch has emerged as a new alternative to traditional human-computer interaction. It eliminates the need for keyboards and mice, enabling simultaneous inter...[Details]
0 Introduction
With a rapidly aging population, a young couple is now required to care for an increasing number of elderly people, leading to a growing difficulty in providing care for them. E...[Details]
Keysight Technologies reported strong third-quarter results, with revenue and earnings per share exceeding expectations and steady order growth. The company, driven by strong growth across multiple...[Details]
We know that the power output by the engine does not directly act on the wheels to drive the car, but needs to pass through a series of power transmission mechanisms. So how is the power transmitte...[Details]
The consumer electronics, appliance, industrial, and automotive markets are experiencing increasing demand for sophisticated motor control solutions. Depending on the application, a variety of moto...[Details]
While aberration theory is a vast subject, a basic understanding of some fundamental concepts can make it easier to understand: spherical aberration, astigmatism, field curvature, and chromatic abe...[Details]
Abstract: This design uses field-effect transistors to create a tube-like audio power amplifier. The preamplifier uses a single Class A transistor, while the power stage utilizes Class AB push-pull...[Details]
1. The significance of reactive power compensation
In industrial enterprises, a large number of electrical equipment are inductive loads, such as motors, welding machines, and electric furnace...[Details]
Robots need localization algorithms to determine their position. These algorithms typically work in conjunction with sensor data to calculate the robot's position. For engineers and researchers, fi...[Details]
On August 14, 2025,
WPG Holdings, a leading international semiconductor component distributor dedicated to the Asia-Pacific market, announced that its subsidiary Quan Ding has launched an AI fa...[Details]
MicroPython Open Source section
京公网安备 11010802033920号
EEWORLD
