Two OCXO’s from Sunstu Electronics can operate at temperatures up to 95°C.
5G circuits and systems used for mmWave transmission run hotter than those used for LTE and low-band and mid-band 5G. It’s simple physics. Given the importance of timing in networks, oscillators used in telecom equipment need low phase noise and temperature stability. California-based Sunstu Electronics has added to its oven-controlled crystal oscillator (OCXO) line two models that have an option to operate at up to 95°C while at the same time using less board space than previous models.
“LTE base stations require parts that can operate at temperatures from -40°C to 85°C,” said Sunstu director of engineering KH Mun in a telephone call with 5G Technology World. “Temperatures inside 5G base stations can exceed 85°C, that’s why we introduced Option 49 which covers -40°C to 95°C.”
Key features of the two models also include:
- Frequency accuracy: ±0.5 ppm
- Frequency stability: ±10 ppb (±20 ppb available)
- Aging: ±0.8 ppb per day
- Optimal performance at 3.3 V
- CMOS output