52 standard frequencies between 3.57 MHz and 77.76 MHz
100% pin-to-pin drop-in replacement to quartz-based XO
Excellent total frequency stability as low as ±20 ppm
Operating temperature from -40°C to 85°C. For 125°C and/or
-55°C options, refer to
SiT1618, SiT8918, SiT8920
Low power consumption of 3.5 mA typical at 1.8V
Standby mode for longer battery life
Fast startup time of 5 ms
LVCMOS/HCMOS compatible output
Industry-standard packages: 2.0 x 1.6, 2.5 x 2.0, 3.2 x 2.5,
5.0 x 3.2, 7.0 x 5.0 mm x mm
Instant samples with
Time Machine II
and
Field Programmable
Oscillators
Ideal for DSC, DVC, DVR, IP CAM, Tablets, e-Books,
SSD, GPON, EPON, etc
Ideal for high-speed serial protocols such as: USB,
SATA, SAS, Firewire, 100M / 1G / 10G Ethernet, etc.
RoHS and REACH compliant, Pb-free, Halogen-free and
Antimony-free
For AEC-Q100 oscillators, refer to
SiT8924
and
SiT8925
Electrical Characteristics
All Min and Max limits are specified over temperature and rated operating voltage with 15 pF output load unless otherwise
stated. Typical values are at 25°C and nominal supply voltage.
Table 1. Electrical Characteristics
Parameters
Output Frequency Range
Symbol
f
Min.
Typ.
Max.
Unit
Condition
Refer to
Table 13
for the exact list of supported frequencies
Frequency Range
52 standard frequencies between
MHz
3.57 MHz and 77.76 MHz
-20
-25
-50
-20
-40
1.62
2.25
2.52
2.7
2.97
2.25
–
–
–
–
–
–
–
–
45
–
–
–
90%
Frequency Stability
F_stab
Frequency Stability and Aging
–
+20
ppm
Inclusive of initial tolerance at 25°C, 1st year aging at 25°C,
and variations over operating temperature, rated power
–
+25
ppm
supply voltage and load.
–
+50
ppm
Operating Temperature Range
–
+70
°C
Extended Commercial
–
+85
°C
Industrial
Supply Voltage and Current Consumption
1.8
1.98
V
Contact
SiTime
for 1.5V support
2.5
2.75
V
2.8
3.08
V
3.0
3.3
V
3.3
3.63
V
–
3.63
V
3.8
4.5
mA
No load condition, f = 20 MHz, Vdd = 2.8V to 3.3V
3.7
4.2
mA
No load condition, f = 20 MHz, Vdd = 2.5V
3.5
4.1
mA
No load condition, f = 20 MHz, Vdd = 1.8V
–
4.2
mA
Vdd = 2.5V to 3.3V, OE = GND, Output in high-Z state
–
4.0
mA
Vdd = 1.8 V. OE = GND, Output in high-Z state
2.6
4.3
ST = GND, Vdd = 2.8V to 3.3V, Output is weakly pulled down
̅ ̅̅
A
1.4
2.5
ST = GND, Vdd = 2.5V, Output is weakly pulled down
̅ ̅̅
A
0.6
1.3
ST = GND, Vdd = 1.8V, Output is weakly pulled down
̅ ̅̅
A
LVCMOS Output Characteristics
–
1
1.3
–
–
55
2
2.5
2
–
%
ns
ns
ns
Vdd
All Vdds. See Duty Cycle definition in
Figure 3
and
Footnote 6
Vdd = 2.5V, 2.8V, 3.0V or 3.3V, 20% - 80%
Vdd =1.8V, 20% - 80%
Vdd = 2.25V - 3.63V, 20% - 80%
IOH = -4 mA (Vdd = 3.0V or 3.3V)
IOH = -3 mA (Vdd = 2.8V and Vdd = 2.5V)
IOH = -2 mA (Vdd = 1.8V)
IOL = 4 mA (Vdd = 3.0V or 3.3V)
IOL = 3 mA (Vdd = 2.8V and Vdd = 2.5V)
IOL = 2 mA (Vdd = 1.8V)
Operating Temperature Range
T_use
Supply Voltage
Vdd
Current Consumption
Idd
OE Disable Current
Standby Current
I_OD
I_std
Duty Cycle
Rise/Fall Time
DC
Tr, Tf
Output High Voltage
VOH
Output Low Voltage
VOL
–
–
10%
Vdd
Rev 1.04
January 30, 2018
www.sitime.com
SiT1602B
Low Power, Standard Frequency Oscillator
Table 1. Electrical Characteristics (continued)
Parameters
Symbol
Min.
Typ.
–
–
87
–
–
–
–
1.8
1.8
12
14
0.5
1.3
Max.
–
30%
150
–
Unit
Pin 1, OE or ST
̅ ̅̅
Pin 1, OE or ST
̅ ̅̅
Pin 1, OE logic high or logic low, or ST logic high
̅ ̅̅
Pin 1, ST logic low
̅ ̅̅
Condition
Input Characteristics
Input High Voltage
Input Low Voltage
Input Pull-up Impedance
VIH
VIL
Z_in
70%
–
50
2
Startup Time
Enable/Disable Time
Resume Time
RMS Period Jitter
Peak-to-peak Period Jitter
RMS Phase Jitter (random)
–
–
–
–
–
T_pk
T_phj
–
–
–
–
Vdd
Vdd
k
M
ms
ns
ms
ps
ps
ps
ps
ps
ps
Startup and Resume Timing
T_start
T_oe
T_resume
T_jitt
5
138
5
Jitter
3
3
25
30
0.9
2
f = 75 MHz, Vdd = 2.5V, 2.8V, 3.0V or 3.3V
f = 75 MHz, Vdd = 1.8V
f = 75 MHz, Vdd = 2.5V, 2.8V, 3.0V or 3.3V
f = 75 MHz, Vdd = 1.8V
f = 75 MHz, Integration bandwidth = 900 kHz to 7.5 MHz
f = 75 MHz, Integration bandwidth = 12 kHz to 20 MHz
Measured from the time Vdd reaches its rated minimum value
f = 77.76 MHz. For other frequencies, T_oe = 100 ns + 3 *
cycles
Measured from the time ST pin crosses 50% threshold
̅ ̅̅
Table 2. Pin Description
Pin
Symbol
[1]
Functionality
Output Enable
H : specified frequency output
L: output is high impedance. Only output driver is disabled.
H : specified frequency output
L: output is low (weak pull down). Device goes to sleep mode. Supply
current reduces to I_std.
Any voltage between 0 and Vdd or Open : Specified frequency
output. Pin 1 has no function.
Electrical ground
Oscillator output
Power supply voltage
[2]
[1]
[1]
Top View
OE/ST/NC
VDD
1
OE/ST /NC
̅ ̅̅
Standby
No Connect
2
3
4
GND
OUT
VDD
Power
Output
Power
GND
OUT
Figure 1. Pin Assignments
Notes:
1. In OE or ST mode, a pull-up resistor of 10 kΩ or less is recommended if pin 1 is not externally driven. If pin 1 needs to be left floating, use the NC option.
̅ ̅̅
2. A capacitor of value 0.1 µF or higher between Vdd and GND is required.
Rev 1.04
Page 2 of 17
www.sitime.com
SiT1602B
Low Power, Standard Frequency Oscillator
Table 3. 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 rat ings.
Parameter
Storage Temperature
Vdd
Electrostatic Discharge
Soldering Temperature (follow standard Pb free
soldering guidelines)
Junction Temperature
[3]
Min.
-65
-0.5
–
–
–
Max.
150
4
2000
260
150
Unit
°C
V
V
°C
°C
Note:
3. Exceeding this temperature for extended period of time may damage the device.
Table 4. Thermal Consideration
[4]
Package
7050
5032
3225
2520
2016
Note:
4. Refer to JESD51 for
JA
and
JC
definitions, and reference layout used to determine the
JA
and
JC
values in the above table.
JA, 4 Layer Board
(°C/W)
142
97
109
117
152
JA, 2 Layer Board
(°C/W)
273
199
212
222
252
JC, Bottom
(°C/W)
30
24
27
26
36
Table 5. Maximum Operating Junction Temperature
[5]
Max Operating Temperature (ambient)
70°C
85°C
Maximum Operating Junction Temperature
80°C
95°C
Note:
5. Datasheet specifications are not guaranteed if junction temperature exceeds the maximum operating junction temperature.
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 1.04
Page 3 of 17
www.sitime.com
SiT1602B
Low Power, Standard Frequency Oscillator
Test Circuit and Waveform
[6]
Vdd
Vout
Test Point
tr
80% Vdd
tf
4
Power
Supply
0.1 uF
1
3
2
15pF
(including probe
and fixture
capacitance)
50%
20% Vdd
High Pulse
(TH)
Period
Low Pulse
(TL)
Vdd
OE/ST Function
1 kΩ
Figure 2. Test Circuit
Note:
6. Duty Cycle is computed as Duty Cycle = TH/Period.
Figure 3. Waveform
Timing Diagrams
90% Vdd
Vdd
Vdd
50% Vdd
[7]
Pin 4 Voltage
T_start
No Glitch
during start up
ST Voltage
T_resume
CLK Output
HZ
T_start: Time to start from power-off
CLK Output
HZ
T_resume: Time to resume from ST
Figure 4. Startup Timing (OE/ ST̅ Mode)
̅ ̅
Figure 5. Standby Resume Timing ( ST̅ Mode Only)
̅ ̅
Vdd
50% Vdd
OE Voltage
T_oe
Vdd
OE Voltage
50% Vdd
T_oe
CLK Output
HZ
T_oe: Time to re-enable the clock output
CLK Output
HZ
T_oe: Time to put the output in High Z mode
Figure 6. OE Enable Timing (OE Mode Only)
Figure 7. OE Disable Timing (OE Mode Only)
Note:
7. SiT1602 has “no runt” pulses and “no glitch” output during startup or resume.
[i=s] This post was last edited by star_66666 on 2016-12-16 00:14 [/i] [font=宋体]UCOSII can be said to be a popular RTOS system in recent years. I started to use UCOSII when I entered the industry 10 y...
As the title says. I found one, but many constants and macros are not included. If anyone can provide a more complete source code, I would be very grateful. Thank you...
I want to use a microcontroller to make a protocol converter, because the BMW host computer can only use kma200d protocol, but now there is only kma215 chip, so I need to convert 215 to 200 protocol t...
Overview of Phase-Shifted Full-Bridge ZVZCS DC/DC Converter Abstract: This paper summarizes 9 types of phase-shifted full-bridge ZVZCS DC/DC converters, briefly introduces the working principles of va...
When choosing a laptop battery, you should consider several factors, such as power, appearance, and quality.
Regarding power, we often see that a manufacturer uses values such as the number ...[Details]
0 Introduction
With the development of society, people pay more and more attention to security work. Monitoring products have been used in various fields instead of being used only in importan...[Details]
introduction
The emergence of high-performance, low-power embedded CPUs and high-reliability network operating systems has made it possible to implement applications with large amounts of comp...[Details]
1 Introduction
Water resources are the basic conditions for human survival and the lifeline of economic development. The reality shows that due to the global shortage of water resources and th...[Details]
Printed circuit boards ( PCBs
)
are used in most electrical products
. If a PCB has low
insulation resistance
(IR), the performance of the circuits on the PCB will be greatly reduced...[Details]
With the rapid development of cities and the improvement of citizens' living standards, the number of various vehicles in cities is growing, and the demand for parking spaces in major commercial an...[Details]
0 Introduction
In order to improve the automation control of shortwave transmitters, so that they can automatically process from far to near, the technicians here use the ICS system to complete the ...[Details]
Electric bicycles have long been a means of transportation for lower-income groups due to their affordability. The largest concentrated expense in the use of electric vehicles is the cost of replac...[Details]
The principles to be followed are as follows:
(1) In terms of component layout, related components should be placed as close as possible. For example, clock generators, crystal oscillat...[Details]
1. Introduction
With the rapid development of computer technology, communication technology, and integrated circuit technology, the large-scale application of field control instruments and equ...[Details]
Abstract: Based on the analysis of the characteristics of the IRIG-B (DC) code type, a design method for IRIG-B (DC) time code decoding is proposed. This method consists of a small number of periph...[Details]
Traditional synthesis techniques are increasingly unable to meet the needs of today's very large and complex FPGA designs implemented in 90nm and below process nodes. The problem is that traditio...[Details]
1 Introduction
With the rapid development of my country's economy, the country has introduced a series of policies such as preferential policies, subsidy policies, and old-for-new policies, wh...[Details]
introduction
In the late 1990s, due to the great safety issues of liquid cobalt lithium-ion batteries, people studied and developed polymer lithium-ion batteries. In addition to the performanc...[Details]
High-definition video surveillance has developed rapidly in recent years, mainly to solve the problem of unclear "details" in normal monitoring. Some cities use high-definition television surveilla...[Details]
stm32/stm8
京公网安备 11010802033920号
EEWORLD
