SLASF38A December 2023 – March 2025 TAD5212-Q1
PRODUCTION DATA
The TAD5212-Q1 supports ultrasonic activity detection (UAD) mode as part of low power activity detection (LPAD) schemes. In this mode, the TAD5212-Q1 continuously monitors one of the input channels for signals in the ultrasonic frequency band. The device consumes low quiescent current from the AVDD supply in this mode. This feature can be enabled by setting UAD_EN (P0_R120_D[3]) to 1'b1. On detecting ultrasonic activity, the TAD5212-Q1 can alert the host through an interrupt or auto wake up and start recording based on the I2C programmed configuration. This alert can be configured through the LPAD_MODE (P1_R30_D[7:6]) register bits.
The input channel for the UAD can be selected by setting the LPAD_CH_SEL (P1_R30_D[5:4]) register bits to an appropriate value. See the How to use the Ultrasonic Activity Detection in the TAx511x and TAx521x for further details.