LTC2284IUP#PBF datasheet by Linear Technology

LTC2284IUP#PBF Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of the LTC2284?
  A good PCB layout for the LTC2284 involves keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the traces between the ADC and the analog input pins. Additionally, it's recommended to use a low-ESR capacitor for the VCC pin and to decouple the VCC pin from the digital supply.
• How do I ensure accurate clocking and synchronization with the LTC2284?
  To ensure accurate clocking and synchronization, it's essential to use a high-quality clock source with low jitter and to ensure that the clock signal is properly terminated. Additionally, the clock frequency should be set according to the datasheet recommendations, and the SYNC pin should be properly configured to ensure correct synchronization.
• What is the maximum sampling rate that can be achieved with the LTC2284?
  The maximum sampling rate of the LTC2284 is 105MSPS, but this can be limited by the analog input bandwidth, the clock frequency, and the system noise. In practice, the achievable sampling rate may be lower, depending on the specific application and system design.
• How do I handle metastability issues with the LTC2284's digital outputs?
  Metastability issues can occur when the digital outputs of the LTC2284 are not properly synchronized with the system clock. To handle this, it's recommended to use a synchronizer circuit or a metastable-resistant flip-flop to ensure that the digital outputs are properly aligned with the system clock.
• What is the recommended power-up sequence for the LTC2284?
  The recommended power-up sequence for the LTC2284 involves powering up the VCC pin first, followed by the analog input pins, and finally the digital output pins. This ensures that the ADC is properly initialized and that the digital outputs are not driven before the analog inputs are stable.