LTC6990HS6#TRMPBF - Analog Devices

LTC6990HS6#TRMPBF Frequently Asked Questions (FAQs)

• What is the maximum frequency of the LTC6990HS6?
  The maximum frequency of the LTC6990HS6 is 17MHz, but it can be extended up to 20MHz with proper PCB layout and component selection.
• How do I ensure the LTC6990HS6 oscillator starts reliably?
  To ensure reliable oscillator startup, make sure to decouple the power supply with a 10uF capacitor, use a high-quality crystal with a load capacitance of 18pF, and keep the PCB layout clean and short.
• What is the recommended power-up sequence for the LTC6990HS6?
  The recommended power-up sequence is to apply VCC first, followed by the oscillator enable pin (EN). This ensures that the oscillator is enabled only after the power supply is stable.
• How do I minimize jitter in the LTC6990HS6 output?
  To minimize jitter, use a high-quality crystal, keep the PCB layout clean and short, and decouple the power supply with a 10uF capacitor. Additionally, consider using a clock conditioning circuit to further reduce jitter.
• Can I use the LTC6990HS6 with a different crystal frequency?
  Yes, the LTC6990HS6 can be used with crystals of different frequencies, but the internal oscillator circuitry is optimized for 10MHz to 13MHz crystals. For other frequencies, you may need to adjust the internal capacitor values or use an external oscillator circuit.