Digital Ultrasonic Transducer Driver and Signal Processor | E524.02

The E524.02 offers ultrasonic range detection with minimum component count. In transmit mode, the IC drives a center tapped transformer directly. Driver frequency, transmitted burst power and other parameters are user configurable and stored in embedded EEPROM via a single wire IO pin at assembly. The device features settings for short and long distance measurement. In receive mode, the echo signal is first amplified with a programmable gain amplifier and converted by an internal analog-to-digital converter. The signal is subsequently digitally filtered and compared. Comparator thresholds are adjustable via registers for defined interval lengths within a measurement period. The resulting signal is available via the bi-directional supply line for the hosting BCU. A “Receive Only” mode enables the reception of indirect echos supports. To minimize wires, the E524.02 communication over a single power supply line.