Installation dimensions

Main indicators

Pin definition

CSAC atomic clock

Features

  • Miniaturization

  • Ultra-low power consumption

  • UART serial communication

  • Pin compatible with SA.45s form factor

  • Sine wave output is available

  • External second synchronization and 1PPS output

Test items Technical indicators
Output frequency 10MHz
Output level CMOS level,0V~Vcc, output impedance 1MQ
Factory frequency accuracy (25℃)≤±5.0E-11
Short term stability ≤3.0E-10/1s
≤1.0E-10/10s
≤3.0E-11/100s
Phase noise(SSB) ≤-70dBc/Hz@10Hz
≤-113dBc/Hz@100Hz
≤-128dBc/Hz @1KHz
≤-135dBc/Hz@10KHz
Frequency drift ≤9E-10/month
Steady state power consumption(25℃) 150mW@3.3V
Powered by 3.3V±0.1V
Start-up characteristics(25℃) ≤3minutes lock
Frequency adjustment range ≥±2E-8
1PPS input Low level 0V~0.3V,high level2.3V~3.0V, input impedance 1 MΩ
1PPS output Low level<0.3V, high level>2.7V, high level width 0.1μs~10μs, output impedance 1MΩ
External second synchronization accuracy 1PPS synchronization accuracys±100ns
External second taming accuracy ≤5E-12(24-hour frequency accuracy average after 1 day of taming)
Maintain accuracy ≤5μs(time difference maintained for 24 hours after 1 day of taming)
Range of working temperature -40C~+70℃(+80℃ optional)
Frequency temperature characteristics ≤1E-9(≤5E-10optional)
Storage temperature range -55℃~+85℃
MTBF >100,000h
Package form 12-pin dual in-line plug
Overall dimensions(mm) 41(±0.5)×35(±0.5)×11.4(±0.2)
Weight ≤35g
Pin number Function name Pin numberFunction name
1Tune7+3.3V
2/8GND
3/91PPS input
4Lock indicator 101PPS output
5TXD 11/
6RXD 1210MHz output