12bit Smart DAQ Hardware Specifications

The hardware specifications for the 12bit PCB with dimensions of 52x46mm are the following:

• QFN 56 Dual Xtensa LX7 Core Processors running up to 240MHz
  • RISC V ultra-low power co-processor
  • 512Kb RAM (PSRAM max 1 Gb);
  • 16Mb SOIC 8 NOR SPI Flash Memory (max 1Gb);
  • 2.4GHz ISM wireless connectivity;
  • Up to 118 12bit ADC Multiplexed DAQ channels;

• Onboard Storage:
  • 2x SPI Flash WSON-8 Chips for local storage upwards of 4Gbytes.

• Authentication & Security:
  • SOIC-8 ATSHA204A SHA-256 high-security hardware authentication IC for secure and unique experimental data exchange

• Power management
  • DFN-6 AUR9718/ST1S09 high efficiency step-down 3.3V 1.5A DC converter;
  • CN3065 4.2V Lipo Battery Management System
  • USB-C connection for 5.0V 1.0A power supply from any power charger found on smartphones or tablets.
  • JST SH 2 pin 1.0mm for specific power supply applications (3.3V to 5.0V 1.0A DC)

• Onboard sensors:
  • DFN-8 AHT20; temperature sensor with a precision of 0.1 C;
  • DFN-8 AHT20 humidity sensor;
  • LGA-14 LSM6DS3 a 6-axis accelerometer and gyroscope;
  • TEMT6000 Luminosity Sensor;
  • SOT 23-3 reference voltage sensor;

• External connectivity for up to 118 sensors 12 to 16bit with onboard voltage reference analyzer with temperature compensation and automatic ADC calibration:
  • 1x I2C pin terminal connector (4 pin)
  • 1x ADC 12 to 16bit (with oversampling & digitization) digital terminal connector (3 pin)
  • 1x ADC Ohmmeter connection with 12 to 16bit (with oversampling & digitization) with manual scale selection via dip switch

• Display
  • 1.69" TFT LCD Display with a resolution of 320x280 px

• Enclosure

This particular smart DAQ was designed to fit a well-known ABS enclosure commercially available on the internet. For instance here on AliExpress.