PGA207UA datasheet by Texas Instruments

PGA207UA Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance?
  A 4-layer PCB with a solid ground plane and a separate analog and digital power plane is recommended. Keep the analog and digital components separate and use a star-grounding configuration to minimize noise.
• How do I optimize the gain setting for my specific application?
  The gain setting depends on the input signal amplitude and the desired output signal amplitude. Use the PGA207UA's gain setting formula (Gain = 20 * log10(Vout/Vin)) to determine the optimal gain setting for your application.
• What is the maximum input signal amplitude that the PGA207UA can handle?
  The maximum input signal amplitude is ±10V, but it's recommended to keep the input signal amplitude below ±5V to ensure optimal performance and prevent distortion.
• How do I minimize noise and interference in my circuit?
  Use a low-pass filter at the input, keep the analog and digital components separate, and use a shielded cable for the input signal. Also, ensure that the power supply is well-regulated and decoupled.
• What is the recommended power-up sequence for the PGA207UA?
  Power up the analog power supply (AVDD) first, followed by the digital power supply (DVDD). Ensure that the analog power supply is stable before applying the digital power supply.