Nano atomic Clock-Nac2

Extremely Small and Compact Rubidium Frequency Oscillator

Accubeat's newest and smallest atomic clock

Rubidium Frequency Standard

The NAC2 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 NAC2 is an extremely small and compact atomic clock that has been designed as a board mounted component.

NAC2 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 NAC2 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 NAC2 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
< 1E-11 @ TAU = 1,000sec
Phase Noise<-50 dBc/Hz @ 1Hz
<-86 dBc/Hz @ 10Hz
<-120 dBc/Hz @ 100Hz
<-138 dBc/Hz @ 1kHz
<-143 dBc/Hz @ 10kHz
<-148 dBc/Hz @ 100kHz
Long Term Stability< 3E-10 / month
Maximum frequency change over operating temperature range±5E-10 (-40°C to 80°C)
Digital TuningRange: ±2E-8 Resolution: 2E-11
Maximum Retrace (48 hours)±5E-10
Time Accuracy1PPS Sync.<25 nSec
Warm-upWarm-up Time (Time to BIT)130s
Power ConsumptionAt Steady State<130mW
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.

NAC2 Key Features

  • Phase noise (floor): -150dBc / Hz
  • Power Consumption: < 350mW
  • Size: 32cc (41.1mm X 35.8mm X 16mm)
  • Aging: <3E-10/month
  • Temp Stability: ±1E-9 / -20°C to 65°C
  • Outputs: 10 MHz , 1PPS
  • Supply voltage: 3.3 VDC
  • RS232 interface for monitoring and control

NAC2 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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