QT55

Product Overview

Features:

Lightweight and compact

Wide input voltage

Wide operating temperature range

Ultra-low temperature coefficient

High vibration resistance

SA.55 compatible

Key Specifications:

Frequency Accuracy: Better than 5E-11

Frequency Drift Rate: Better than 2E-11/day

Supply Voltage: +5V to +12V

Power-on Characteristics: Locks within 10 minutes

External Second Synchronization: 1PPS synchronization accuracy better than +/- 50ns

Holdover Performance: Better than 1µs (24-hour acclimation, 24-hour holdover)

Dimensions: 50.8 x 50.8 x 17.8 mm³

Steady-state Power Consumption: Less than 3W

Maximum Power Consumption: Less than 14W

Main Applications:

Satellite navigation, underwater navigation, digital communications, network synchronization, rail transit

Main Applications:

Technical Indicators


Performance IndicatorQT40G CPT Atomic ClockQT45 Chip-Scale ClockQT55 CPT ClockQT31 Clock
1Output Frequency10 MHz10 MHz
16.384 MHz
20 MHz
24.576 MHz
10 MHz10 MHz
2Factory Frequency Offset≤±5E-11≤±5E-11≤±5E-11≤±5E-11

Frequency Stability≤1E-10/s
≤3E-11/10s
≤1E-11/100s
≤3E-10/s
≤1E-10/10s
≤3E-11/100s
≤5E-11/s
≤3E-11/10s
≤1E-11/100s
≤5E-11/s
≤1.8E-11/10s
≤7E-12/100s
4Frequency Drift Rate≤1E-11/24h≤3E-11/24h≤5E-12/24h≤5E-12/24h

After 1 Day of Operation≤8E-10≤1E-9≤1E-9≤4E-11
5Frequency Temperature Coefficient(-5~60°C)(-55~+80°C)(-10~+70°C)(-40~80°C)


≤2E-10 (+20~+40°C)


6Frequency Accuracy (Locked to External 1PPS after 2h)≤±1E-12/24h≤±1E-12/24h≤±1E-12/24h
7Lock Time at Startup≤5 min≤4 min≤10 min≤7 min (at room temp)
≤15 min (-5°C)
8Holdover Performance (after 24h disciplining)≤3μs/24h≤5μs/24h≤1μs/24h
9Power ConsumptionSteady: ≤2W (3.3V)
Peak: ≤5W (3.3V)
Steady: <130 mW (3.3V)Steady: <3W (12V)
Peak: ≤14W (12V)
Steady: ≤6W (5V)
Peak: ≤20W (5V)
10Operating Temperature-55~+80°C-10~+70°C-40~+80°C-5~+60°C
11Dimensions (mm)41 × 35 × 1241 × 35 × 1250.8 × 50.8 × 17.850.8 × 50.8 × 25

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