TCA55 Localization Chip level Atomic clock

Learn about our Localization Chip level Atomic clock

The CA55 is a domestically produced chip-level atomic clock based on the CPT principle, offering advantages such as low power consumption, compact size, and fast startup. Suitable for operating temperatures from -40°C to +85°C, it provides CMOS-level 10MHz and 1PPS outputs, boasting short-term stability better than 3E-10/1s, daily drift better than 3E-11, and monthly aging less than 5E-10. It supports external calibration using 1PPS or analog voltage, making it suitable for applications such as navigation, communications, unmanned equipment, marine geophysical exploration, and instrumentation.

Important Features

  • Operating temperature range -40℃ ~+85℃
  • The short-term stability is better than the 8E-11/1s
  • Small size, size of 41×36×17mm
  • Low power consumption, stable power consumption at room temperature <1.8W
  • Appearance and installation dimensions compatible with SA.45s
  • Accepts external 1PPS discipline and analog voltage calibration

Important Features

Test ItemConditionTechnical Indicators
Output frequency10MHz,1-way CMOS square wave
Factory accuracyAfter calibration≤5×10-¹¹¹
Frequency controlVoltage pressure contorl0~5V,with the total range of at least ±1×10⁻⁸
CNC calibrationCoarse resolution 2×10⁻¹⁰, fine resolution <1×10⁻¹²
Locking timeIndoor temperature≤180s
Frequency stability1sStandard type :≤1×10⁻¹⁰;ADEV8 :≤2.5×10⁻¹¹
Frequency stability10sStandard type:1×10⁻¹⁰;ADEV8 :≤2.5×10⁻¹¹
Frequency stability100sStandard type :≤3×10⁻¹¹;ADEV8 :≤8×10⁻¹²
Phase noise1Hz≤-50dBc/Hz
Phase noise10Hz≤-80dBc/Hz
Phase noise100Hz≤-115dBc/Hz
Phase noise1kHz≤-130dBc/Hz
Phase noise10kHz≤-140dBc/Hz
Frequency drift rate≤5×10⁻¹¹/day;FD3: ≤3×10⁻¹¹/day
Frequency reproducibilitySwitch 24h±5×10-¹¹
Temperature and Frequency Characteristics≤5×10-¹⁰
Working temperatureEnvironmental temperature-40℃~+70℃; OT85: -40℃~+85℃
Storage temperature-55℃~+125℃
power supply±5%+3.3V
Rate of workPreheat≤10W
Rate of workSteady state(indoor temperature)≤1.5W
External DimensionBody size41mm×36mm×17mm
Weight<50g

Typical phase noise

Frequency stability typical value

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