ARJ-196 - ABRACON

ARJ-196 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of the ARJ-196?
  Abracon recommends a symmetrical layout with the oscillator at the center, and the output traces should be routed away from the input traces to minimize feedback. A solid ground plane is also recommended to reduce noise and radiation.
• How do I ensure the ARJ-196 oscillator starts up reliably in my design?
  To ensure reliable startup, Abracon recommends a power supply ramp-up time of at least 1 ms, and a decoupling capacitor of 0.01 μF to 0.1 μF should be placed close to the VDD pin. Additionally, the input voltage should be within the recommended operating range.
• What is the maximum frequency deviation of the ARJ-196 over temperature and voltage?
  The ARJ-196 has a maximum frequency deviation of ±0.5% over the operating temperature range of -40°C to 85°C, and ±0.1% over the recommended voltage range of 1.8 V to 3.3 V.
• Can I use the ARJ-196 in a noisy environment, and if so, how do I mitigate noise effects?
  Yes, the ARJ-196 can be used in noisy environments. To mitigate noise effects, Abracon recommends using a low-pass filter on the output, and ensuring a good ground plane and shielding around the oscillator. Additionally, using a ferrite bead or a common-mode choke on the power supply lines can help reduce noise.
• What is the recommended termination for the ARJ-196 output?
  Abracon recommends a 10 kΩ to 100 kΩ pull-up resistor on the output pin to ensure proper signal termination and to prevent signal reflection.