IQS7211A Capacitive Touch & Proximity Controller Azoteq IQS7211A is a capacitive touch and proximity trackpad / touchscreen controller with automatic tuning for touch devices. The controller features ultra-low power (ULP) wake-up on touch and an internal voltage regulator. Azoteq IQS7211A controllers offer responses up to 100Hz, and come in both QFN and BGA packages. The devices include 12 (QFN) / 10 (WLCSP) external sensor pad connections. The IQS7211A series is suitable for capacitive and touch devices such as wireless earbuds, fitness bands, and game controllers.