AR50LC series

MINIATURE ATOMIC CLOCK, RUBIDIUM OSCILLATOR

Revision: Initial Release

Initial Release 3/28/2024

Page 1

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Description

Parameters

Min.

Typ.

Max.

Units

Notes

Frequency Output

10

MHz

Supply Voltage (Vdd) [Note 2]

12

12.5 to 15

+18

Vdc

Option A

4.9

5.0

+5.1

Vdc

Option B

Input Power (warm-up)

18

W

Input Power (steady-state)

6

W

Warm-up time to ±0.5ppb accuracy

8

minutes

Operating Temperature Range

-20

+65

°C

See options

Storage Temperature Range

-40

+90

°C

Initial Frequency Tolerance

at time of shipment

±0.05

ppb

@+25°C

Frequency Stability over Operating

Temperature Range (in still air)

±0.2

±0.3

ppb

See options

Aging per day

5E-12

After 30 days

Aging per month

5E-11

After 30 days

Aging per year

5E-10

After 30 days

Warm-up time to lock

6

minutes

Retrace

±0.03

ppb

after 1 hour of continuous operation

Output Waveform

Sinewave

Output Power

+8

+10

+12

dBm

Output Load

50

Ω

Spectral Purity, Spurious

-70

dBc

100kHz BW

Spectral Purity, Harmonics

-30

dBc

Output Waveform

CMOS

Output Logic High (VOH)

2.97

Vdc

Output Logic Low (VOL)

0.33

Vdc

Duty Cycle

40

50

60

%

Rise/Fall time

10

nS

Output Load

15

pF

Abracon’s AR50LC embedded Rubidium Oscillator offers the latest technology that provides

exceptional performance including excellent accuracy, short term stability and frequency stability.

The Abracon AR50LC is available with either a sinewave or CMOS output and with a supply voltage

of +5Vdc or +12Vdc, with extended range up to +18Vdc. Additional features of this series include

lock monitor output and voltage control function to support a wide range of applications.



Output Frequency 10MHz



Low phase noise high precision atomic clock



Excellent short-term stability



Operating Supply Voltage: +5Vdc, +12Vdc



Ultra-tight frequency tolerance ±0.05 ppb



Temp stability available to 0.3ppb (-20°C to +65°C)



Sinewave or CMOS Output



REACH/RoHS II Compliant | MSL N/A



ESD Sensitive

Features

Typical Applications

Electrical Specifications [Note1]



Satellite Timing and Frequency



Oil and Gas Exploration



GPS Receiver



Telecommunication Infrastructure



4G/LTE/CDMA/EMTS



Test and Measurement



Underwater Sensor Systems



Mining and Seismic Research

Note 1:

All measurements guaranteed at +25°C unless otherwise specified.

Note 2:

The +12Vdc version can be powered up with any VDD value in the range of +12Vdc to +18Vdc.

Note 3:

The application should maintain thermal stability to obtain optimum performance. The use of a heat sink or copper plate under the device should be avoided.

Device mounting should allow for a minimum of 1mm clearance from the printed circuit board.