Table of Contents
Overview
The AT24MP1T2RS32A is a reference design primarily aimed at supporting a 5V power supply for the 24GHz radar sensor market. It offers strong anti-interference capabilities and utilizes sweeping sensing technology introduced by Airtouch (Shanghai) Intelligent Technology Co., LTD, efficiently filtering interference caused by human body movement outside the sensing area. Based on the AT24MP1T2RS32A series chips, this solution provides a cost-effective option that combines small size, low power consumption, and high performance.
The maximum sweep bandwidth can be configured to the 240 MHz mode (24.005-24.245 GHz), depending on customer resolution requirements. The sensor integrates a send and receive patch antenna (1T2R), Cortex-MO+ MCU, and a UART interface, encapsulated in a complete SoC system with built-in FLASH. The chip’s features include a low power mode and Memory Retention function, making it versatile for applications in smart home technology, security, gesture recognition, Blind Spot Detection (BSD), vital signs detection, and more. Additional features include supporting a preferred frequency band that does not interfere with 5GWifi communication and supporting secondary development options.
Product Application
- Home Automation
- Intelligent Security
- Gesture Recognition
- Monitoring Vital Signs
Note: Radar sensor products belong to the reference design, only supportsample testing.
Product Introduction Summary
The AT24MP1T2RS32A sensor is a 24G chip developed by Airtouch (Shanghai) Intelligent Technology Co., Ltd. for use in industrial and consumer markets. This chip offers a cost-effective solution with features such as compact size, low power consumption, and high performance. It operates across the full 24GHz band and includes a complete transmitter-to-receiver link and ADC converter. Key features include a 0-degree phase shifter function on the transmitter with a maximum output power of 7dBm, flexible gain, and high-pass/low-pass filters for the receiver channel. The sensor comes with one transmit and two receive antennas, a Cortex-M0+ MCU, a UART interface, and built-in FLASH, creating a comprehensive System on Chip (SoC). Additionally, it features a low power mode and a Memory Retention function.
Product Feature
Radar Sensor AT24MPIT2RS32A Features:
- Supports 5V power supply.
- Strong anti-interference capabilities to filter out the interference from human body movements outside the sensing area.
- Operates on a preferred frequency band that does not interfere with 5G Wi-Fi communication.
- Supports low power standby and fast wake-up with options for IO or serial output for radar induction results.
- Facilitates secondary development.
Pin Definition
The radar sensor AT24MP1T2RS32A includes a pin row interface with a 2.54mm spacing on the lower side, consisting of five effective signal interfaces: +5V, GND, OUT, TX, and RX. Figure 3.1 illustrates the pin sequence number location, while Table 3.1 provides definitions and descriptions of each pin.
| Number Name Description | ||
| 1 | VCC | The power supply pin of the sensor, 5V. If the power supply needs to be changed to 3.3V, leave U1 blank and connect R2 with a 0-ohm resistor. |
| 2 | GND | Power ground. |
| 3 | IO | Radar sensing output pin, can be used as a serial port transceiver pin or general-purpose IO. |
| 4 | TX | Serial port transmitting pin, can be used for communication or burning. |
| 5 | RX | Serial port receiving pin, can be used for communication or burning. |
Electric Parameter
1 Static Operating Parameter
Table 5.1 provides the main static parameters of the radar sensor AT24MP1T2RS32A during normal operation.
2 Absolute maximum rated parameter
The absolute maximum rating is a condition that must not be exceeded, even for an instant. Exceeding this limit may result in performance degradation or even permanent damage.
Table 5.2: Absolute Maximum Rated Parameters of Radar Sensor AT24MP1T2RS32A
Machine dimension
Radar sensor AT24MP1T2RS32A is not equipped with pins by factory default. Its mechanical dimensions are shown in Figure 7.1, where the PCB board thickness is about 1.4mm, and all unmarked tolerances are 0.2mm.
Disclaimer Summary
The software and documentation from Airtouch (Shanghai) Intelligent Technology Co., Ltd. are meant exclusively for use on products they license or sell. They are owned by the company and protected by copyright laws.
Both are provided “AS IS” without any warranties, whether express or implied, including warranties of merchantability and fitness for a particular purpose. Airtouch is not liable for any special, incidental, or consequential damages.
The company can modify the content or software without notice and is not responsible for any effects resulting from its use.