MAX121CWE+ datasheet by Maxim Integrated Products

MAX121CWE+ Frequently Asked Questions (FAQs)

• What is the recommended layout and routing for the MAX121CWE+ to minimize noise and ensure accurate conversions?
  To minimize noise and ensure accurate conversions, it is recommended to follow a star-grounding scheme, keep analog and digital grounds separate, and use a solid ground plane. Additionally, keep the analog input traces short and away from digital traces, and use a low-impedance power supply.
• How do I optimize the MAX121CWE+ for low-power consumption?
  To optimize the MAX121CWE+ for low-power consumption, use the shutdown mode (SHDN) to reduce power consumption when not in use. Additionally, use a low-frequency clock, reduce the sampling rate, and use the internal reference voltage to minimize external voltage references.
• What is the recommended input signal conditioning for the MAX121CWE+ to ensure accurate conversions?
  To ensure accurate conversions, it is recommended to use a low-pass filter or a band-pass filter to remove high-frequency noise and aliasing. Additionally, use a voltage divider or an attenuator to adjust the input signal amplitude to the ADC's input range.
• How do I handle overvoltage protection for the MAX121CWE+?
  To handle overvoltage protection for the MAX121CWE+, use external voltage clamping devices such as zener diodes or transient voltage suppressors (TVS) to limit the input voltage to the ADC's maximum rating. Additionally, use a voltage limiter or a clamp circuit to prevent overvoltage conditions.
• What is the recommended calibration procedure for the MAX121CWE+?
  The recommended calibration procedure for the MAX121CWE+ involves applying a known input voltage and adjusting the internal reference voltage to achieve the desired accuracy. Additionally, perform a system calibration to compensate for any system-level errors.