LM1812 Datasheet (National Semiconductor)

LM1812, ULTRASONIC TRANSCEIVER

The LM1812 is a general purpose ultrasonic transceiver designed for use in a variety of ranging sensing and communications applications The chip contains a pulse-modulated class C transmitter a high gain receiver a pulse modulation detector and noise rejection circuitry A single LC network defines t

LM1812 Features

* Y One or two-transducer operation Y Transducers interchangeable without realignment Y No external transistors Y Impulse noise rejection Y No heat sinking Y Protection circuitry included Y Detector output drives 1A peak load Y Ranges in excess of 100 feet in water 20 feet in air Y 12W peak transmit