OCXO oscillator CSAC-SA65

electronichigh-stabilitywith connector

Overview
The CSAC-SA65 is a Chip Scale Atomic Clock designed for harsh environments where compact size, low power and high frequency stability are required. The unit delivers 10 MHz (square wave) output (configurable up to 16.4 MHz), a 1PPS output and a 1PPS input for synchronization. It is form-, fit- and function-compatible with the CSAC-SA.45s while providing improved environmental insensitivity and fast atomic-lock performance.

Key features

• Operating temperature: −40°C to +80°C
• Storage temperature: −55°C to +105°C
• Rapid warm-up/atomic lock: 120 s
• Typical tempco: 3E-10 (−40°C to +80°C)
• Power consumption: 120 mW
• Volume: 17 cm3; Weight: 35 g
• Accuracy at shipment: ±5.0E-11
• Short-term stability: 1.5E-11 @1000 s (Allan deviation)
• Aging rate (typical): 9E-10/month

Technical specifications

• Model: CSAC-SA65
• Output frequencies: 10 MHz square wave, up to 16.4 MHz max
• PPS outputs/inputs: 1PPS output; 1PPS input for external sync
• Supply voltage: 3.3 V (CMOS 0V–3.3V)
• Operating temperature range: −40°C to +80°C
• Storage temperature range: −55°C to +105°C
• Warm-up time to atomic lock: 120 seconds
• Power consumption: 120 mW
• Volume: 17 cm3; Weight: 35 g
• Accuracy at shipment: ±5.0E-11
• Short-term stability: 1.5E-11 @1000 s (Allan deviation)
• Aging: ~9E-10 per month (typical)

Interfaces & integration
Provides 10 MHz and user-configurable frequency output up to 16.4 MHz in CMOS 0V–3.3V format. 1PPS I/O enables precise synchronization and holdover. RS-232 interface supports monitoring and control for field integration and diagnostics. Mechanical and electrical interfaces allow integration into military, telecom and industrial systems.

Applications

• Military and defense timing systems
• Telecommunications and network timing
• Navigation and GNSS-denied timing
• Instrumentation, test and measurement equipment
• Embedded and portable precision timing modules