ADS1256 8-channel 24-bit ADC module is equipped with TI ADS1256IDB micro-power consumption, high-precision ADC chip and 2.5V reference voltage source. It adopts SPI interface communication protocol and has a data output rate of up to 30ksps. It supports single-ended input and differential input.

Specifications:
Onboard chip: Onboard high-precision TI ADS1256IDB ADC chip and ADR03 2.5V power reference chip
Data output rate: The data output rate can reach 30ksps, and the low non-linearity is ±0.0010%
Single-ended/differential input: The module can be configured as 8 single-ended inputs or 4 differential inputs
Measuring analog voltage: suitable for measuring analog voltage within 3V
Working voltage: 5V
Module size: 60*35mm

Test Methods:
The module provides STC15W&&STM32 microcontroller 8-channel serial port display reference program and STC89C52 microcontroller 4-channel 1602_LCD display reference program. The simple test method of STC89C52 microcontroller + 1602LCD liquid crystal is as follows:
5V and GND are connected to the DC 5V power supply, SCLK, DIN, DOUT, DRDY, and CS are connected to P1.2, P1.3, P1.4, P1.5, and P1.6 of the microcontroller respectively, and AINO, AIN1, AIN2, and AIN3 are connected respectively. 2.5V, 2.5V, 2.5V, 2.5V (the measured voltage should be on the same ground as the ADS1256).
The 1602 LCD will display 4 sets of voltage values, of which the 1st, 2nd and 4th sets are the single-ended input voltage values of AIN0, AIN1 and AIN3, and the 3rd set is the difference between AIN2-AIN3. The 4 sets of voltage values are approximately 2.5V, 2.5V, 0V, and 2.5V respectively.