CSTCR6M00G55Z-R0 - Murata Electronics

CSTCR6M00G55Z-R0 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance?
  Murata recommends a symmetrical PCB layout with a ground plane underneath the oscillator to minimize noise and radiation. A 4-layer PCB with a dedicated ground plane is ideal. Keep the oscillator away from high-frequency components and ensure a clear return path for the oscillator's output signal.
• How do I handle the oscillator's output signal impedance?
  The CSTCR6M00G55Z-R0 has a CMOS output stage with a relatively high output impedance. To ensure signal integrity, use a 1kΩ to 2kΩ pull-up resistor to VCC and a 10pF to 22pF decoupling capacitor to GND. This will help match the output impedance to the load and reduce signal reflections.
• What is the recommended power supply decoupling for the oscillator?
  Murata recommends using a 10uF to 22uF decoupling capacitor with a low ESR (Equivalent Series Resistance) between VCC and GND, placed as close as possible to the oscillator. This will help filter out noise and ensure a stable power supply.
• How do I ensure the oscillator starts up reliably?
  To ensure reliable start-up, ensure the power supply voltage rises monotonically and reaches the minimum operating voltage (1.8V) within 10ms. Avoid voltage droops or glitches during start-up, as they can prevent the oscillator from starting.
• What is the maximum allowable frequency deviation for this oscillator?
  The CSTCR6M00G55Z-R0 has a specified frequency tolerance of ±50ppm over the operating temperature range. However, the maximum allowable frequency deviation depends on the specific application requirements. Typically, a deviation of up to ±100ppm is acceptable for most digital systems.