Nano atomic Clock-Nac1

Extremely Small and Compact Rubidium Frequency Oscillator

NAC1

Rubidium Frequency Standard

The NAC1 is the newest and smallest addition to AccuBeat’s line of Rubidium Frequency Standards. Incorporating proven traditional glass technology and based on Coherent Population Trapping (CPT), the NAC1 is an extremely small and compact atomic clock that has been designed as a board mounted component.

NAC1 provides 10 MHz and 1PPS outputs and short term stability (Allan Deviation) of 2E-11 @ 100 seconds with aging of 3E-10/month at 25°C. The NAC1 has a UART interface for monitoring and control, a Built in Test
(BIT) output and a warm-up time of typically 180 seconds. Measuring just 41.1mm X 35.8mm X 22mm and weighing only 75 grams and with a power consumption of less than 1.2 Watts, the new NAC1 is a Rubidium atomic clock especially suitable and designed for a wide range of portable applications.

Product Highlights

<2E-11 @TAU
 Stability (100sec)

 -150dBc/Hz @10kHz
Phase Noise

<7.5E-11/month
Aging

Performance

Performance
FrequencyStability
(Allan Deviation)
< 2E-10 @ TAU = 1sec
< 8E-11 @ TAU = 10sec
< 2E-11 @ TAU = 100sec
Phase Noise<-86 dBc/Hz @ 10Hz
<-120 dBc/Hz @ 100Hz
<-138 dBc/Hz @ 1kHz
<-143 dBc/Hz @ 10kHz
<-148 dBc/Hz @ 100kHz
<-150 dBc/Hz @ Floor
Aging1< 3E-10 / month
Maximum frequency change over operating temperature range±1E-9 (-20°C to 65°C)
Digital Tuning
(Through Serial communication)
Range: ±2E-8 Resolution: 7.6E-13
Initial offset at shipment±5E-11
Time Accuracy1PPS Sync.
(Disciplined to External 1PPS)
±100nsec
1PPS Accuracy (Holdover) – Option2< 100us for 30 days
Warm-upWarm-up Time (Time to BIT)180s (Typ)
Power ConsumptionOperation< 1.2W
Warm-up< 2.4W
Storage Temperature-40°C to +90°C
No damage operating temperature-40°C to 85°C

Additional product specifications, outline drawings and block diagrams and test data are available on request.

NAC1 Key Features

  • Phase noise (floor): -150dBc / Hz
  • Power Consumption: < 1.2W
  • Size: 32cc (41.1mm X 35.8mm X 22 mm)
  • Aging: <7.5E-11/month
  • Temp Stability: ±1E-9 / -20°C to 65°C
  • Outputs: 10 MHz , 1PPS
  • Supply voltage: 3.3 VDC
  • UART interface for monitoring and control
  • ROHS Compliant (Optional)

NAC1 Key Applications

  • GPS Receivers
  • UAV's
  • Autonomous Sensors
  • Backpack Secure Communication Radios
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Customized configurations are available, contact us to learn more.

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