PGA460 Full-Bridge Driver Solutions for Ultrasonic Transducers (Rev. A)
This document offers various implementations to achieve a full-bridge driver to excite an ultrasonic
transducer when using the PGA460. Because the PGA460 was only designed to excite transducers in the
transformer-driven or half-bridge driver modes, external circuitry is required to enable a full-bridge driver.
The recommended solution is based on combining the functionality of the PGA460 with the DRV8870 to
enable the excitation voltage to swing between ±45 V. Low-cost discrete alternatives are also discussed.