User Guide

5.8Ghz low power radar sensor
Radar sensor
Version 1.0
Page 3
AT58L4MD-2020 5.8GHz Radar sensor User Guide
Description
AT58L4MD-2020 is an low power 5.8G radar sensor launched by AirTouch. The overall
power consumption is 9mA. The module size is 20mm*20mm, which is equivalent to a 5coin.
，
The sensor uses a self-developed radar sensor chip AT58MP1T1RD, which integrates a 5.8G
microwave circuit, an intermediate frequency amplifier circuit and a signal processor
，
The chip has a
high degree of integration and good production consistency. The peripheral is equipped with a
miniaturized planar antenna, which greatly reduces the overall size while ensuring the performance of
the sensor.The sensor can be used to detect various scenes of human being or moving target sensing，
including intelligent home, Internet of things, intelligent lighting and other fields.
Radar Sensor illustration
Figure 1 AT58L4MD-2020 5.8GHz Radar sensor
Radar Sensor illustration
Five pin holes are reserved in the module, including VCC, GND, OUT, SCL and SDA,
with pin distance of 2.54mm
，
If you need to adjust parameters such as distance and delay time,
you can adjust the specific resistance on the module to select the corresponding gear or use the
external MCU reserved on the module to rewrite the internal parameters，The following table
describes the definition of each pin:
Antenna
Photodiode
AT58M
P1T1RD