PGA204AU/1K datasheet by Texas Instruments

PGA204AU/1K Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of PGA204AU/1K?
  A 4-layer PCB with a solid ground plane and a separate analog ground plane is recommended. Keep the analog and digital grounds separate and connect them at a single point. Use a star topology for the power supply and keep the signal traces short and direct.
• How do I ensure the PGA204AU/1K is properly biased for optimal performance?
  The PGA204AU/1K requires a dual power supply (±5V or ±15V) and a common-mode voltage (Vcm) of 0V to 5V. Ensure the power supplies are well-regulated and decoupled with 10uF and 100nF capacitors. The Vcm pin should be connected to a quiet analog ground.
• What is the maximum input voltage that can be applied to the PGA204AU/1K?
  The maximum input voltage is ±10V, but it's recommended to limit the input voltage to ±5V to ensure optimal performance and prevent damage to the device.
• How do I optimize the gain setting of the PGA204AU/1K for my application?
  The gain setting depends on the specific application requirements. The PGA204AU/1K has a gain range of 0.5 to 128. Start with a moderate gain setting (e.g., 10) and adjust based on the signal amplitude and noise requirements of your application.
• What is the recommended ESD protection for the PGA204AU/1K?
  Use a TVS (Transient Voltage Suppressor) diode or a Zener diode with a voltage rating of 5.1V or higher to protect the device from electrostatic discharge (ESD).