Greetings! I need help.
Short description
Architecture: transimpedance amplifier (TIA). Physically consists of two separate boards. “Amplifier + ADC” and “Interface”.
Purpose: photodiode current measurement. Replacement for Model 3300
Measuring range: from units of picoamps to 10 milliamps
Power supply: from 5 volts USB or external source. Switching by jumper/jumper.
Number of gain ranges (multiplier/feedback): 4 pieces
Amplifier Output Offset Correction: Small offsets can be corrected directly in the ADS1262 ADC. Large can not lose the dynamic range.
Bandwidth: somewhere in the range of 0.5-5 Hz.
Analog output: yes
Interface board : based on esp32 microcontroller with USB2.0 interface and Ethernet
Amplifier board control via SPI (1) directly to ADS1262 ADC
And relay SPI(2) (AGN21003 - RELAY SLIM LATCH DPDT 3VDC PCB) 7 pcs via shift register 74HC595PW