ULN SAW Oscillator OCSO for ground applications SR B250 500MHz

Product catalog summary

Product Description
The SR B250 is an Ultra Low Noise (ULN) Oven Controlled Voltage Controlled SAW Oscillator (OCVCSO) operating at 500 MHz. It is intended for use in laboratory environments, including test equipment and ground-based military applications. The device is housed in a package measuring 95.25mm x 76.2mm x 23.27mm.

Features

Phase noise of -140 dBc/Hz at 1 kHz offset (typical).
Noise floor below -180 dBc/Hz (typical).

Applications

Instrumentation such as test equipment and simulators.
Ground-based military equipment compliant with MIL-PRF-28800F, Class 3.

Specifications
1. Environmental Conditions

Operating temperature range: 0 to 50°C.
Storage temperature range: -40 to 85°C.
Shock and vibration resistance as per MIL-PRF-28800F, Class 3.

2. Electrical Interface

Supply voltage: 11.8 to 12.2 V.
Load impedance: 50 Ω.
Control voltage: 2 to 7 V.
Input impedance: Minimum 10 kΩ.

3. Performance

Nominal frequency: 500 MHz.
Frequency calibration: ±0.5 ppm at 25°C.
Frequency stability over temperature: ±1 ppm.
Long-term stability: ±1 ppm/year after 30 days of continuous operation.
Power consumption: 8.5 W max during warm-up, 3.6 W max at 25°C.
Warm-up time: 5 minutes to ±1 ppm.
Frequency tuning: Monotone with a positive slope of 1 to 2 ppm/V.
Output waveform: Sine wave with 11.5 to 13.5 dBm into a 50Ω load.
Phase noise power density: -140 dBc/Hz at 1 kHz offset, -165 dBc/Hz at 10 kHz offset, < -180 dBc/Hz at 1 MHz offset.
Harmonic distortion: -30 dBc for second and third harmonics, -80 dBc for non-harmonics.

4. Mechanical Features
The oscillator is housed in a compact package with specified dimensions.

5. Pin Description