TI 公司的PGA450-Q1是全集成超声波传感器接口器件,集成了电压稳压器,12位SAR ADC,8位微控制器,数字带通滤波器,DAC,两个NMOS低边驱动器,低噪音放大器,振荡器,LIN 2.1物理接口协议接口.主要用于汽车泊车, 盲区检测和物体检测.本文介绍了PGA450-Q1主要特性,功能方框图, 应用电路图, 评估板PGA450-Q1 EVM主要特性,电路图和PCB布局图.
The PGA450-Q1 is a fully integrated interface device for ultrasonic transducers used in automotive park distance or object detection applications. It incorporates these system blocks: voltage regulators, a 12-bit SAR ADC, an 8-bit microcontroller, a digital band-pass 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 possesses 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.
PGA450-Q1主要特性:
Dual NMOS Low-Side Drivers
Configurable Burst Generator
Low-Noise Amplifier
12-Bit SAR ADC
Configurable Digital Band-Pass Filter
Digital Signal Envelope Detect
On-Chip 8-Bit Microprocessor
LIN 2.1 Physical Interface and Protocol
Watchdog Timer
Four-Wire SPI for Testability / Programming
8K Bytes OTP
768 Bytes of FIFO RAM
256 Bytes Scratchpad RAM
8K Bytes of Development RAM
32 Bytes of EEPROM for Application
PGA450-Q1应用:
Automotive Park Distance
Blind Spot Detection |
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