ChipSourcetek-FM5841 Overview:ChipSourceTek-FM5841 is a high-end microwave radar sensor SoC chip developed by Electronics, which is designed for modern sensing needs. The chip is in 5725 to 5Operating in the 825GHz band, it uses advanced Doppler radar algorithms to accurately and quickly identify the movement of objects. The main advantages of this SoC chip are its high level of integration and low power consumption. It integrates microwave transceivers, radar IF amplification circuitry, and other necessary digital modules to dramatically simplify system design complexity while ensuring superior performance consistency and cost-effectiveness. The operating parameters of ChipSourcetek-FM5841 can be adjusted through the standard I2C protocol. Its frequency adjustment is flexible, enabling precise fine-tuning within a specified range. The controllable characteristics of its gain ensure that the chip can maintain stable performance in the most disturbed environment, reducing the possibility of co-channel interference and object mistouch. In addition, the chipsourcetek-FM5841 adopts a wide voltage and low power architecture, which provides customers with a wider range of power supply options, thus further expanding its application range. When combined with an external MCU, a complete microwave radar sensing solution can be quickly constructed. In general, ChipSourcetek-FM5841 not only supports the I2C protocol standard, but also has shown its excellent application potential in many fields such as smart lighting, smart home and smart control, proving its competitiveness in the high-end sensing market. ChipSourcetek-FM5841 Features:Worked on 5The sensing distance of the microwave sensor based on the Doppler effect in the 8G ISM band can be flexibly adjusted according to needs, using mature CMOS process, fully integrated, ultra-cost-effective, and the chip has built-in LDO, which can effectively reduce the interference of external power supply, and the small-size package QFN24 4X4X085 mm low power consumption, the overall current is about 14mIF signal output, and it can be equipped with self-developed intelligent sensing algorithmsChipSourcetek-FM5841 Applications:Smart lighting, smart home appliance control, smart sensing
Block diagram of ChipSourcetek-FM5841 chip:
ChipSourcetek-FM5841 PIN Pin Definition:
Silicon Source Special ChipSourcetek-FM5841 Pin Pin Description:
ChipSourcetek-FM5841 application schematic:
1.The PI network on the RX antenna side is used to match the input antennas, and the network parameters can be adjusted to optimize RF performance when the antennaline impedance is mismatched2.There are two analog IF outputs of the chip, namely LPF OUTP and LPF OUTN, one of which can be selected for ADC sampling, and the other is not used for IF signal pin suspension processing3.After the MCU samples and simulates the IF frequency, the specific power frequency signal needs to be filtered out by an algorithm to reduce the influence of the power frequency of the power supply on the sensing performance4.The typical supply voltage of the chip is 5V, if the supply voltage exceeds 5V, an additional LDO is required5.The MCU configures the chip via I2C, and if the I2C traces are long, it is recommended to add a 10K pull-up resistor to the SDA and SCLK