Prowave, PW Series Ultrasonic Sonar Ranging IC

The Prowave Ultrasonic Sonar Ranging IC is designed specially for ultrasonic echo ranging application. This chip consists of an external tuneable RC oscillator with a special feature of automatic frequency tracing, which compensates the resonant frequency shift of used transducer due to temperature change, a stage of fixed gain pre amplifier setting externally, a 32 steps time controlled gain amplifier, a less external components band pass filter, a comparator converts analog signal to TTL digital signal for external μP processing and a tuneable timer acts as time reference for chip clock.

Operates in 6 to 10 V single voltage
Wide operation frequency range up to 250KHz
Temperature controlled oscillator traces resonant frequency drift of transducers
Built in 32 steps time controlled gain amplifier
Built in band pass filter of less external tuned components
Bi direction I/O for both driving pulse and echo