Overview
ADS1256 8 Road 24-bit ADC module assembled TI ADS1256IDB, minimum power consumption, high precision ADC chips and 2.5V date voltage source, with SPI communication protocol, data output rates up to 30 ksps, support single-sided input and differential input.
Interface Description
5V, GND: 5V input power
SCLK, DIN, DOUT, CS: SPI communication interface
DRDY: ADS1256data be ready output (active low level).
PDWN: ADS1256 Synchronization/Turn Off Power Input (Active Low Level)
AIN0-AIN7: Analog voltage input, can be configured as either 8 single-sided inputs or 4 differential inputs (the measured voltage should be shared with the module).
Precautions:
Since the voltage of ADS1256 is 5V and the measured voltage is 2V below the supply voltage, so the module is only suitable for measuring analog voltages within 3V.
Test methods
Module provides STC15W and STM32 microcontroller 8-channel serial display reference program and STC89C52 single chip 4-channel 1602LCD display reference program, the STC89C52 single chip + 1602 LCD LCD test method is as follows:
5 V, GND connection to DC 5 V power supply, SCLK, DIN, DOUT, DRDY, CS connection to single chip P1.2, P1.3, P1.4, P1.5, P1.6, AIN0, AIN1, AIN2, AIN3 connection to 2.5 V, 2.5 V, 2.5 V, 2.5 V. The measured Voltage should be with the ADS1256, then 1602 LCD displays these four sets of voltage values where the 1st, 2nd, 4th Sets are one-sided input voltage value of AIN0, AIN1, AIN3 and the 3rd Set the difference of AIN2-AIN3, the voltage values of these four sets are 2.5V, 2.5V. 0V, 2. 5 V.
Package includes:
1 x Fasizi ADS1256 24bit 8-Channel ADC ADC Module High Precision ADC Capture Data Acquisition Module