onsemi Ultrasonic sensor
NCV75215
The NCV75215 is intended to operate with a piezoelectric ultrasonic transducer to provide time-of-flight measurement. The high-sensitivity, low-noise operation allows detection from 0.25 m up to 4.5 m for a standard 75 mm pole. The device drives the ultrasonic transducer with a programmable frequency via a transformer. The received echo is amplified and converted to a digital signal, filtered, detected and the magnitude is compared to a time-dependent threshold which is stored in an internal RAM. A bidirectional I/O Line facilitates communication with a master ECU, issuing commands to the NCV75215 and receiving data back via the same line.
Key features
- Measurement distance range from 0.25 m to 4.5 m
- Acoustic noise monitoring
- Transducer resonant period measurement
- Diagnosis of transducer performance
Additional features
- Junction temperature monitoring and thermal shutdown
- Transducer center frequency range from 35 to 90 kHz
- Direct and indirect measurement modes
- EEPROM memory for configuration setting and user data
- Rx gain adjustable in 0.5 dB steps in the range from 50 to 110 dB
- Time-dependent threshold values for the sensitivity control
- Dynamic (time-dependent) gain control
- Tx current range adjustable from 50 mA to 350 mA
- Programmable ultrasonic burst length
- On-chip bidirectional I/O Line
- Small TSSOP16 package
- These are Pb-free devices
Applications
- Ultrasonic distance measurements
- Autonomous mobile robots
- ADAS
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