SGAS701 - Renesas Electronics

SGAS701 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of the SGAS701?
  A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the analog and digital sections separate, and use a common ground point for the analog and digital grounds.
• How do I ensure the SGAS701 is properly powered and decoupled?
  Use a high-quality, low-ESR capacitor (e.g., 10uF) for power decoupling, and place it as close to the VCC pin as possible. Ensure the power supply is stable and within the recommended voltage range (2.7V to 5.5V).
• What is the recommended clock frequency for the SGAS701?
  The recommended clock frequency is 32.768 kHz, but the device can operate with a clock frequency range of 10 kHz to 100 kHz. However, the accuracy and stability of the clock source will affect the overall performance of the SGAS701.
• How do I handle the SGAS701's power-on reset (POR) and brown-out reset (BOR) functions?
  The POR and BOR functions are enabled by default. To disable them, tie the POR pin to VCC and the BOR pin to GND. Ensure the power supply is stable and within the recommended voltage range to avoid unwanted resets.
• What is the purpose of the SGAS701's internal voltage regulator, and how do I use it?
  The internal voltage regulator generates a stable 1.8V supply for the internal circuitry. It can also be used to power external circuitry, but ensure the total current drawn does not exceed 10mA.