Automotive Ultrasonic Sensor Signal Conditioner - PGA450-Q1

PGA450-Q1 (ACTIVE)

Automotive Ultrasonic Sensor Signal Conditioner

Description

The PGA450-Q1 is a fully integrated interface device for ultrasonic transducers used in automotive park-assist or object-detection applications. The device incorporates the following system blocks: voltage regulators, a 12-bit SAR ADC, an 8-bit microcontroller, a digital bandpass filter, a DAC, dual NMOS low-side drivers, a low-noise amplifier, an oscillator, and a LIN 2.1 physical interface and protocol for interfacing.

The PGA450-Q1 has an 8-bit microcontroller and OTP memory for program storage for processing the echo signal and calculating the distance between the transducer and the object. This data is transmitted through the LIN 2.1 communication protocol. The LIN 2.1 physical layer is slave-only and does not implement the LIN wake-up feature. All other LIN 2.1 features can be implemented in the software.

Features

  • 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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