Education Library

Frequently Asked Question

What are the common failure modes of digital potentiometers?

  1. Latch up can occur when the prescribed power-up sequence (VMDD->VMSS->GND->VA ->VB) is not followed.
  2. A voltage greater than |VMDD - GND| or |VMDD - VMSS| (if dual-supply) applied across terminals A-B, W-B, or W-A can cause failure.