SLASEC8B February 2017 – January 2019 PGA460-Q1
The PGA460-Q1 device must be paired with an external transducer. The PGA460-Q1 device drives the transducer, and then filters and processes the returned echo signal sensed by the transducer. The transducer should be chosen based on the resonant frequency, input voltage requirements, sensitivity, beam pattern, and decay time. The PGA460-Q1 device meets most transducer requirements by adjusting the driving frequency, driving current limit, band-pass filtering coefficients, and low-pass filtering coefficients. The external transformer or p-channel MOSFET should be chosen to meet the input voltage requirements of the transducer and have a saturation current rated equal to or greater than the configured driving current limit of the PGA460-Q1 device. The interface options include USART, TCI, and one-wire UART. After the burst-and-listen cycle is complete, the PGA460-Q1 device can be called to return the distance, amplitude, and width of the echo through a communication interface.