ADS1256 24bit 8channel ADC Module

ADS1256 from Texas Instruments is a 24-bit, 30 KSPS 8 channel Delta Sigma ADC.

This modules provides a simple way to interface the ADS1256 IC to various Micro-controllers, Arduino and even to Raspberry Pi.

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ADS1256 function and characteristics

• On-board high precision TI ADS1256IDB ADC chips

• On-board ADR03 2.5V datum voltage source chips

• Data output rates up to 30ksps, nonlinearity is low to ±0.0010％

• The module can be configured as either 8 single-ended inputs or 4 differential inputs

• ADS1256 module is suitable for measuring analog voltage within 3V

• Module operating voltage is 5V

Interface description

• 5V、GND：5V power input
  
• SCLK, DIN, DOUT, CS：SPI communication Interface
  
• DRDY：ADS1256 data be ready output (Active low level)
  
• PDWN：ADS1256 Sync / Turn off the power input (Active low level)
  
• AIN0-AIN7：Analog voltage input, it can be configured as either 8 single-ended inputs or 4 differential inputs,(The measured voltage should be shared with the module)
  

Precautions

Because the voltage of ADS1256 is 5V,and The measured voltage should be 2V below the supply voltage, so The module is only suitable for measuring analog voltages within 3V.

Testing Methods

Related Links

• ADS1256 Basic Arduino Library
• Arduino Forum for ADS1256 Module