Ordering Information .................................................................................................................................................................... 2
7.1. User Programming Interface ..................................................................................................................................... 19
7.2. Start-up output frequency and signaling types .......................................................................................................... 19
8.1. Any-frequency function ............................................................................................................................................. 20
9 I C/SPI Control Registers...................................................................................................................................................... 30
9.1. Register Address: 0x00. DCO Frequency Control Least Significant Word (LSW) .................................................... 30
9.2. Register Address: 0x01. OE Control, DCO Frequency Control Most Significant Word (MSW) ................................. 31
9.3. Register Address: 0x02. DCO PULL RANGE CONTROL ........................................................................................ 32
9.4. Register Address: 0x03. Flac-N PLL Integer Value and Flac-N PLL Fraction MSW ................................................. 33
9.6. Register Address: 0x05. PostDiv, Driver Control ...................................................................................................... 34
9.7. Register Address: 0x06. mDriver, Driver Control ...................................................................................................... 35
2
10 I C Operation ........................................................................................................................................................................ 36
2
10.1. I C protocol ............................................................................................................................................................... 36
2
10.2. I C Timing Specification ............................................................................................................................................ 38
2
10.3. I C Device Address Modes ....................................................................................................................................... 39
Dimensions and Patterns ........................................................................................................................................................... 46
Additional Information ................................................................................................................................................................ 47
Revision History ......................................................................................................................................................................... 48
Rev 0.91
Page 3 of 48
www.sitime.com
SiT3522
340 to 725 MHz Elite™ I
2
C/SPI Programmable Oscillator
1 Electrical Characteristics
PRELIMINARY
All Min and Max limits in the Electrical Characteristics tables are specified over temperature and rated operating voltage with
standard output terminations shown in the termination diagrams. Typical values are at 25°C and nominal supply voltage.
Table 1. Electrical Characteristics – Common to LVPECL, LVDS and HCSL
Parameter
Output Frequency Range
Symbol
f
Min.
340.000001
340.000001
Typ.
–
–
Max.
725.000000
500.000000
Unit
MHz
MHz
Condition
LVDS and LVPECL output driver, factory or user
programmable, accurate to 6 decimal places
HCSL output driver, factory or user programmable, accurate to
6 decimal places
Inclusive of initial tolerance, operating temperature, rated
power supply voltage and load variations
Frequency Range
Frequency Stability
Frequency Stability
F_stab
-20
-20
-25
-50
First Year Aging
Operating Temperature Range
F_1y
T_use
–
-20
-40
-40
Supply Voltage
Vdd
2.97
2.7
2.52
2.25
Input Voltage High
Input Voltage Low
Input Pull-up Impedance
Duty Cycle
Start-up Time
Output Enable/Disable Time –
Hardware control via OE pin
Output Enable/Disable Time –
Software control via I
2
C/SPI
VIH
VIL
Z_in
DC
T_start
T_oe_hw
70%
–
–
45
–
–
–
–
–
–
±1
–
–
–
3.3
3.0
2.8
2.5
–
–
100
–
–
–
+20
+20
+25
+50
–
+70
+85
+105
Supply Voltage
3.63
3.3
3.08
2.75
–
30%
–
55
3.0
9.1
V
V
V
V
Vdd
Vdd
kΩ
%
ms
µs
Measured from the time Vdd reaches its rated minimum value
Measured from the time OE pin reaches rated VIH and VIL to
the time clock pins reach 90% of swing and high-Z.
See
Figure 9
and
Figure 10
Measured from the time the last byte of command is
transmitted via I
2
C/SPI (reg1) to the time clock pins reach 90%
of swing and high-Z. See
Figure 30
and
Figure 31
OE pin
OE pin
OE pin, logic high or logic low
ppm
ppm
ppm
ppm
ppm
°C
°C
°C
1 -year aging at 25°C
Extended Commercial
Industrial
Extended Industrial. Available only for I C operation, not SPI.
2
st
Temperature Range
Input Characteristics – OE Pin
Output Characteristics
Startup and Output Enable/Disable Timing
T_oe_sw
–
–
11.8
µs
Rev 0.91
Page 4 of 48
www.sitime.com
SiT3522
340 to 725 MHz Elite™ I
2
C/SPI Programmable Oscillator
Table 2. Electrical Characteristics – LVPECL Specific
Parameter
Symbol
Min.
Typ.
Max.
Unit
PRELIMINARY
Condition
Current Consumption
Current Consumption
OE Disable Supply Current
Output Disable Leakage Current
Maximum Output Current
Idd
I_OE
I_leak
I_driver
–
–
–
–
–
–
0.10
–
94
63
–
30
mA
mA
A
mA
Excluding Load Termination Current, Vdd = 3.3V or 2.5V
OE = Low
OE = Low
Maximum average current drawn from OUT+ or OUT-
Output Characteristics
Output High Voltage
Output Low Voltage
Output Differential Voltage Swing
Rise/Fall Time
VOH
VOL
V_Swing
Tr, Tf
Vdd - 1.1V
Vdd - 1.9V
1.2
–
–
–
1.6
225
Vdd - 0.7V
Vdd - 1.5V
2.0
290
Jitter
RMS Phase Jitter (random) –
DCO Mode Only
T_phj
–
–
RMS Phase Jitter (random) –
Any-frequency Mode Only
T_phj
–
–
RMS Period Jitter
[3]
Note:
3. Measured according to JESD65B
T_jitt
–
0.22
0.075
0.23
0.09
1
0.260
0.085
0.325
0.095
1.6
ps
ps
ps
ps
ps
f = 622.08 MHz, Integration bandwidth = 12 kHz to 20 MHz,
all Vdd levels
f = 622.08, IEEE802.3-2005 10 GbE jitter mask integration
bandwidth = 1.875 MHz to 20 MHz, all Vdd levels
f = 622.08 MHz, Integration bandwidth = 12 kHz to 20 MHz,
all Vdd levels
f = 622.08, IEEE802.3-2005 10 GbE jitter mask integration
bandwidth = 1.875 MHz to 20 MHz, all Vdd levels
f = 622.08 MHz, Vdd = 3.3V or 2.5V
V
V
V
ps
See
Figure 5
See
Figure 5
See
Figure 6
20% to 80%, see
Figure 6
Table 3. Electrical Characteristics – LVDS Specific
Parameter
Symbol
Min.
Typ.
Max.
Unit
Condition
Current Consumption
Current Consumption
OE Disable Supply Current
Output Disable Leakage Current
Idd
I_OE
I_leak
–
–
–
–
–
0.15
89
67
–
mA
mA
A
Excluding Load Termination Current, Vdd = 3.3V or 2.5V
OE = Low
OE = Low
Output Characteristics
Differential Output Voltage
Delta VOD
Offset Voltage
Delta VOS
Rise/Fall Time
VOD
ΔVOD
VOS
ΔVOS
Tr, Tf
250
–
1.125
–
–
–
–
–
–
340
530
50
1.375
50
460
Jitter
RMS Phase Jitter (random) –
DCO Mode Only
T_phj
–
–
RMS Phase Jitter (random) –
Any-frequency Mode Only
T_phj
–
–
RMS Period Jitter
[4]
Note:
4. Measured according to JESD65B.
T_jitt
–
0.21
0.060
0.21
0.070
1
0.255
0.070
0.320
0.80
1.6
ps
ps
ps
ps
ps
f = 622.08 MHz, Integration bandwidth = 12 kHz to 20 MHz,
all Vdd levels
f = 622.08 MHz, IEEE802.3-2005 10 GbE jitter mask
integration bandwidth = 1.875 MHz to 20 MHz, all Vdd levels
f = 622.08 MHz, Integration bandwidth = 12 kHz to 20 MHz,
all Vdd levels
f = 622.08 MHz, IEEE802.3-2005 10 GbE jitter mask
integration bandwidth = 1.875 MHz to 20 MHz, all Vdd levels
f = 622.08 MHz, Vdd = 3.3V or 2.5V
mV
mV
V
mV
ps
f = 622.08 MHz. See
Figure 7
See
Figure 7
See
Figure 7
See
Figure 7
Measured with 2 pF capacitive loading to GND, 20% to 80%,
My original version is 6.00i. When I download it, it prompts that BLUENRG-1 is not supported.I need to update to a newer version to simulate it, such as the latest version 6.22dAttached is JLink_Windo...
The Ethernet TCP connection cannot be established, but when I ping the board (send ICMP packets), the connection is established immediately. What is the reason?...
These are some small programs I wrote in the past. I have sorted them out. Many of them don’t have good comments, but they should be very simple. You can take a look if you need them!...
Event details: [Infineon's revolutionary photoacoustic spectroscopy (PAS) CO2 sensor]Updated to 2022-12-24Evaluation report summary:@秦天qintian0303[Infineon XENSIV PAS CO2 sensor] CO2 standard gas test...
1. Several nouns
ABI:
The specifications that an executable file must follow in order to run in a specific execution environment;
Separately generated relocatabl...[Details]
As more and more consumers purchase new energy vehicles, the safety of electric vehicles has become a major concern. This has been particularly prominent following a series of electric vehicle fire...[Details]
With the rapid development of technology, automotive intelligence is increasing at an unprecedented rate. This not only enhances vehicle functionality and comfort, but also places higher deman...[Details]
Whether it is an electric car or an ordinary fuel car, for the vast majority of car buyers, the final cost of use is what they care about most. For fuel cars, how to save fuel is what drivers care ...[Details]
Is pure electric vehicles a false proposition for long-distance driving? At least from my personal perspective, based on current technological and infrastructure standards, I believe so. Below, I'l...[Details]
Topics: Bring Your Own Device (BYOD) trends; the impact of using employees' own mobile devices to control access to work facilities and equipment on information security; and ways to securely imple...[Details]
On August 21st, Zhiyuan Robotics revealed at its first partner conference that it expects shipments to reach thousands of units this year and tens of thousands next year. The company hopes to reach...[Details]
Permanent magnets are essential components in a wide range of household and industrial devices. They are particularly crucial in the renewable energy sector, including electric vehicle motors. Curr...[Details]
1. Multi-channel DAC technology bottleneck
Currently,
the development of multi-channel DAC technology focuses on two core challenges.
First, industrial applications urgently ...[Details]
To improve the lateral active safety of intelligent connected vehicles, the identification and definition of unexpected functional safety scenarios for the EPS (Electronic Steering System) ...[Details]
With the gradual popularization of new energy vehicles in recent years, more and more people have been able to access and purchase electric vehicles. The structure of electric vehicles is composed ...[Details]
Today, the voltage of electronic products continues to rise to 400V, 600V and even 1000V, so there are few electronic load models that can handle such high voltages. Many people consider connecting...[Details]
With rapid economic development, the types of pollution sources are increasing, especially in chemical and industrial zones and their surroundings. The patterns of pollution and the types of ecolog...[Details]
Currently, PLCs are widely used in various industries, including special machine tools, machine tools, control systems, building automation, steel, petrochemicals, electricity, building materials, ...[Details]
Since the beginning of summer, high temperatures have continued to intensify, and the national electricity load has frequently broken records. The latest data from the National Energy Administratio...[Details]
MCU
京公网安备 11010802033920号
EEWORLD
