Ultrasonic Sensor Signal Conditioner - PGA450-Q1

PGA450-Q1 (ACTIVE)

Ultrasonic Sensor Signal Conditioner

Description

The PGA450-Q1 device is a fully integrated system-on-a-chip analog front-end for ultrasonic sensing in automotive park-assist, object-detection through air, level sensing in large tanks, and distance measurements for anti-collision and landing assist of unmanned systems (such as drones, cameras, and robots). This highly integrated device enables a small form-factor and cost-optimized solution compared to discrete ultrasonic-sensor solutions. The PGA450-Q1 device can measure distances ranging from less than 1 meter up to 7 meters, at a resolution of 1 cm depending on the transducer-transformer sensor pair used in the system.

The PGA450-Q1 device has an integrated 8051 8-bit microcontroller and OTP memory for program storage to process the echo signal and calculate the distance between the transducer and targeted object. Full programmability is available for optimization of specific end applications, and to accommodate a wide-range of closed-top or open-top transducers. Configurable variables include the number of transmit pulses, driving frequency, LNA gain, and comparison signal thresholds. External communication with the PGA450-Q1 device is capable through the LIN 2.1 protocol, SPI, or UART interfaces.

For all available packages, see the orderable addendum at the end of the datasheet.

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    Measurements up to 7 Meters through Air
  • Dual NMOS Low-Side Drivers
  • Configurable Burst Generator
  • Low-Noise Amplifier
  • 12-Bit SAR ADC
  • Configurable Digital Bandpass Filter
  • Digital Signal Envelope Detect
  • On-Chip 8-Bit Microprocessor
  • LIN 2.1 Physical Interface and Protocol
  • Watchdog Timer
  • Four-Wire SPI for Testability and Programming
  • 8K Bytes of OTP
  • 768 Bytes of FIFO RAM
  • 256 Bytes of Scratchpad RAM
  • 8K Bytes of Development RAM
  • 32 Bytes of EEPROM for Application

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Parametrics Compare all products in Ultrasonic Analog Front End

 
# Input Channels
Interface
Integrated Features
Active Supply Current (Typ) (mA)
Supply Voltage (Max)
Supply Voltage (Min)
Rating
Pin/Package
Operating Temperature Range (C)
Approx. Price (US$)
PGA450-Q1
1    
LIN / SCI
UART
GPIO
SPI    
System-On-Chip solution
Transmitter
LNA
PGA
12-bit SAR ADC
Digital Signal Processing
8-bit Microprocessor
LIN/SCI Interface and Protocol
Integrated Temperature Sensor
Watchdog timer    
5    
18    
7    
Automotive    
28TSSOP    
-40 to 125    
2.60 | 1ku    
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