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SNP409 Ultrasonic Sensor IC

PREVIEW

SNS409 is a single chip solution for automotive ultrasonic sensor module application with a very small package. Based on TOF measurement it can provide the obstacle distance. Per excellent low noise performance and stable high range gain adjustable features, it could support short distance to 15cm and long distance to 5m with perfect matching circuit with the specific transducer for the high performance required system like APA and PAS. It has auto gain and auto threshold functions which could support customers a short time to market module. These functions could save a lot of calibration effort.


  • Block Diagram
  • Features
  • Applications
  • Technical Parameter
  • Selection Table

Block Diagram

  • 超声波.svg
    • SNS409.png

Features

  • Single chip solution

  • Measure distance 0.15~5m (with perfect matching circuit)

  • Operation voltage: 6V~18V

  • Single wire communication interface

  • Transducer frequency: 30k~83kHz

  • Programmable driver current: 168~354mA

  • Programmable driver pulse number: 4~32pulse

  • Programmable receiver analog gain: 39.2~56dB

  • Programmable receiver digital gain: 0~47.89dB

  • Auto gain control

  • Auto threshold control



  • Echo peak detection

  • Diagnostic:

    • Noise detection

    • Over voltage/Under voltage

    • Resonance frequency out of range

    • 1st Echo height

  • Integrated temperature sensor

  • Support JTAG test mode

  • EEPROM for long lifecycle operation

  • AEC-Q100 qualified

  • Package: QFN20-4x4



Applications

  • 自动泊车.svg 自动泊车(1).svg
    Parking assist system
  • BSD盲区探测.svg BSD盲区探测(1).svg
    Blind spot alarm system
  • 涉水深度.svg 涉水深度(1).svg
    Water wading detection system
  • 邮箱液位.svg 邮箱液位(1).svg
    Fuel level sensor
  • 工业距离.svg 工业距离(1).svg
    Industrial distance measuring
  • 无人机降落.svg 无人机降落(1).svg
    Drone landing assist
  • 无人机障碍物探测.svg 无人机障碍物探测(1).svg
    Robot & drone obstacle detection

Technical Parameter

  • Operation voltage
    6V~18V (max: 40V)
  • Measure distance
    0.15~5m (with perfect matching circuit)
  • Transducer frequency
    30k~83kHz
  • Programmable driver current
    168~354mA
  • Programmable driver pulse number
    4~32pulse
  • Programmable receiver analog gain
    41.6~58.4dB
  • ADC
    14bit
  • Programmable receiver digital gain
    0~47.89dB

Selection Table

Model
【PDF】
Temperature range
Package
Packing option
SNS409
-40°C~+105°C
QFN20
Reel