Spi Communication; Key Features; Potential Applications - Infineon XENSIV BGT60LTR11AIP Manual

XENSIV™ BGT60LTR11AIP Radar Shield2Go
Super low-power 60 GHz Doppler radar sensor with antennas-in-package
Introduction
QS1 sets up the three modes of the MMIC (autonomous by default), QS2 controls the detector comparator
threshold, QS3 sets up the hold time of the "target detect" output, and QS4 is used to select the device
operating frequency by configuring the phase-locked loop (PLL).
QS1 is controlled by a dual-state switch and QS4 by a tri-state switch. QS2 and QS3 can be adjusted by two
rotatable potentiometers.
In autonomous mode, the detection threshold (set via potentiometer R_QS2) has 16 different levels to fulfill a
configurable detection range from 0.5 m up to 7 m with a typical human-target radar cross-section (RCS). The
hold time is also configurable as 16 levels in autonomous mode via the potentiometer that controls QS3, which
allows detection status to be held for up to 30 minutes (see section 4.2.5).
1.1.3

SPI communication

The MMIC also supports SPI mode by changing the operation mode with the QS1 pin (see section 4.2.3). In this
mode, the raw radar data can be extracted from BGT60LTR11AIP for signal processing on a PC or an external
MCU using SPI. This sampled radar data can be used to develop customized algorithms. The SPI mode offers
the possibility to control the MMIC radar completely via SPI.
1.2

Key features

•
Easy motion and direction of motion detection of an object with only two GPIOs
• Programmable in Arduino IDE and Platform.IO (VS Code extension)
• Configurable detection range from 0.5 m to 7 m
•
LEDs that blink when presence or movement direction is detected
• Potentiometers and switches to adjust the settings of the radar (QS)
• Super-small (48.8 mm x 23.9 mm) board design with Infineon's Shield2Go format
•
60 GHz transceiver
1.3

Potential applications

•
Prototyping smart home appliances
• Security applications
Application Note
BGT60LTR11AIP MMIC with one transmitter and one receiver unit
page 4 of 32 V1.0
2022-12-15