Hign-concerned Chemical : None
Theory : Current Sensor
Model Number : ADS1256
Material : Metal
Type : Biosensor
Output : Analog Sensor
Origin : China
Use : MAGNETIC SENSOR
1. power input terminal, input voltage range 5.5V - 12V (5V power supply, please connect directly to 2);10. power indicator light LED;2. 5V power supply input terminal (1.2 two power supply, only one can);11. JTAG interface, designed by the definition of JLINK-V8 or V9;3. STM32F103C8T6 leads to GPIO, which is convenient for the development of two times. The silk screen is directly corresponding to the pin number of the chip.12. unmarked;4. new original master control MCU: STM32F103C8T6;13. STM32F103C8T6 reset button;5. 2.5V datum, ultra high precision, low temperature floating;14. USB to TTL connection, corresponding to MCU TX, RX, GND, can communicate directly with the computer;6. adjustable potentiometer, output adjustable voltage link to AIN0/ I0;15. imported 3232 serial port communication chip;7. the 8 channels of input are collected, the I0-I7 is connected to the positive end of the acquisition voltage, and the G is simulated, and the negative end of the acquisition voltage is connected.16. serial port, mother head;8. input filter and attenuation resistance, default does not do attenuation, leave the position of welding attenuation resistance, 0603 package;17. the output voltage of the adjustable potentiometer is controlled by I0 / AIN0: disconnecting the IO suspension, and measuring the output voltage end of the adjustable potentiometer by I0;9. ADS1256IDB collection chip, new original import;18. STM32 BOOT0 and BOOT1 select control jump cap;The results show that the unit of attention is uVAs shown in the following chart, the acquisition card is charged on the card, and the seventh uses the channel I7 and the simulated AGND (G) to use the jump cap short to measure the simulated ground. The size of the measurement results directly reacts to the layout and wiring of the plate, and the filter is good or bad. The smaller the better the result, the smaller the better the fluctuation. For multiple sample tests, the sampling voltage is at several uV. Many other boards on the market have several hundred uV of the ground sampling voltage, and this sampling voltage will be directly coupled to the subsequent sampling results, resulting in a loss of precision.
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The line layout is compact and regular, with good electrical insulation and mechanical stability, and can maintain stable performance under different temperature and humidity environments to ensure accuracy and reliability.
In circuit design, carefully planned lines are like precision transportation networks, and lines of different widths and spacings undertake different currents and signals transmission tasks respectively. The key signal lines are impedance matching processing, which greatly reduces signal reflection and attenuation and ensures the stable transmission of high-frequency signals.
All kinds of electronic components are soldered on the circuit board, and the solder joints are full, round, and firm and reliable. Core components like chips are perfectly connected to the circuit board through fine packaging processes to achieve high-speed data processing and interaction.
This circuit board has a wide range of responses in many fields. Whether in the industrial control field that requires extremely high stability or consumer electronics field that pursues extreme performance, it can provide solid guarantees for the stable operation of the equipment with its excellent design and reliable performance, and help various electronic devices play a powerful role.
