Ultrasonic Parking Distance Measurement ASSP

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Overview

The NCV75215 ASSP is intended to operate with a piezoelectric ultrasonic transducer to provide time-of-flight measurement of an obstacle distance during vehicle parking. 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 is used to communicate with a master (ECU). The master issues I/O Line commands to the NCV75215 and data are reported back via the same line.

  • Automotive Park Assist
  • Automotive Emergency Brake
  • Automotive blind Spot Detection
  • Ultrasonic Distance Measurements
  • Park Assist Sensor
  • Acoustic Noise Monitoring
  • Transducer Resonant Period Measurement
  • Diagnosis of Transducer Performance
  • Junction Temperature Monitoring and Thermal Shutdown
  • Transducer Center Frequency Range from 35 to 90 kHz
  • Direct and Indirect Measurement Modes
  • 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

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NCV75215DB001R2G

Active

Pb

A

H

P

TSSOP-16

3

260

REEL

4000

Y

35 - 90

1

18

85

6

IO Line

$1.124

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