home >> Rubidium atomic clock >> SA.45s Chip level rubidium atomic clockChip level rubidium
Product Description:
Microsemi (acquired Symmetricom) offers the SA.45s chip-scale atomic clock, with low power consumption (<120mW) and a compact size of <17cc (40.6mm*35.5mm*11.4mm). It features excellent characteristics such as a 120-second fast start and 1PPS lock.
The SA.45s chip provides standard CMOS level outputs of 10MHz and 1PPS signals. It offers a short-term stability (Allan variance) of 2.5E-10@1s and an aging rate of 3E-10 per month. The temperature characteristics range from 5E-10 (-10℃ to +70℃), and there are also options available for wide temperature ranges (-40℃ to +85℃).
The SA.45s supports synchronization of its 1PPS output to an external reference clock's 1PPS, achieving an accuracy of ±100ns. The 1PPS input can also be used to lock its 1PPS and frequency outputs to levels as precise as 1ns and 1.0E-12, respectively.
The SA.45s comes with a standard RS-232 serial interface at CMOS levels, enabling control and calibration of the device. It also provides a range of status monitoring capabilities and allows for reading the internal clock time information (TOD) of the SA.45s.
Notably, the SA.45s supports operating in an ultra-low power mode where its physical package is temporarily turned off, resembling the state of a free-running TCXO. The physical package periodically starts and relocks the TCXO. In this mode, the average power consumption is as low as <50mW.
Technical Specifications:
Chip-Level Rubidium Clock SA.45s-001 SA.45s-002
Output: 10MHz (3.3V CMOS)/1PPS Two-Minute Fast Start Lock
Initial Accuracy: <±5E-11
Input: 1PPS
Aging Rate:
- Monthly: <3E-10
- Yearly: <1E-9
Short-Term Stability:
- @1s: <1.5E-10 (SA.45s-001), <2.0E-10 (SA.45s-002)
- @10s: <5.0E-11 (SA.45s-001), <7.0E-11 (SA.45s-002)
- @100s: <1.5E-11 (SA.45s-001), <2.0E-11 (SA.45s-002)
Phase Noise (dBc/Hz):
- @1Hz: <-55
- @10Hz: <-78
- @100Hz: <-113
- @1KHz: <-128
- @10KHz: <-135
Temperature Characteristics:
- <5E-10 (SA.45s-001)
- <1E-9 (SA.45s-002)
Operating Temperature Range:
- -10℃ to +70℃ (SA.45s-001)
- -40℃ to +85℃ (SA.45s-002)
|
Key Features:
● Low power consumption: <120mW
● Compact size: 40.6mm*35.5mm*11.4mm
● Fast startup (<2 minutes)
● 10MHz CMOS-compatible output
● 1PPS synchronization input/output
● Fully sealed
● RS-232 management control interface
● Ultra-low power mode (<50mW)
● Underwater sensor networks
● Anti-IED (Improvised Explosive Device) applications
● Interference system independent sensor networks
● Unmanned aerial vehicles (UAVs)
● Marine exploration
● Handheld testers
● Applications requiring high accuracy and low power consumption
Short-Term Stability (Allan Deviation） Physical Solder Power Consumption (Steady-State, 25℃):
- <120mW (SA.45s-001)
- <-125mW (SA.45s-002)
Vibration Resistance: 7.7g (RMS) (in operating state)
Shock Resistance: 1000g, 1ms half-sine (in non-operating state)
Operating Voltage: 3.3Vdc
Package Dimensions (mm):
40.6*35.5*11.4
|
Documentation
Being among experts, no longer confused.
-
PNT stands for Positioning, Navigation, and Timing
![We are the Reference]()
Bd Star is a national high-tech enterprise specializing in Beidou GPS timing and navigation industry. The company is dedicated to the research and development, design, production, and sales of system solutions such as standard time timing
-
Experienced
![Experience]()
BdSTAR TIME seamless switching technology for redundant reference sources includes several technical components such as high-precision phase-shifting technology, reference clock, FPGA, integrated analog stretching, asynchronous serial communication, parameter storage, and master clock output.
-
Requirement customization
![Built-to-Order]()
The core technology team of the company has many years of research and development experience in the field of timing and frequency. They possess multiple key core technologies in high-precision timing, PNT combination, frequency measurement, control, optical fiber time-frequency transfer, recovery, and maintenance.
-
Philosophy
![Approved]()
"Our team of experts is committed to providing you with the best industry solutions, reducing project costs, and saving your valuable time. Additionally, our ability to design and use various timing and navigation components enables us to develop customized products for various special applications."
