JESSINIE ADS1256IDB Analog To Digital Conversion Module 24 Bit ADC Data Acquisition Module Single Ended Differential Input

Product details

• Note: When wiring the printed circuit board, the external crystal oscillator should be placed as close as possible to the ADS1256, otherwise the input amplitude will be affected. When the amplitude is too small, the amplitude can be increased by reducing the capacitance at both ends of the crystal oscillator. The capacitance range should be from 0 to 20μF, and the typical value of the access capacitance is 18pF when the crystal oscillator is 7.68MHz..
• OVERVIEW:The ADS1255 and ADS1256 are very low noise A/D converters. The ADS1255 supports one differential or two single ended inputs and has two general purpose digital I/Os. The ADS1256 supports four differential or eight single ended inputs and has four general purpose digital I/Os. Otherwise, the two units are identical and are referred to together in this data sheet as the ADS12556..
• How it works: The ADS1256 operation process is established by setting up 11 independent registers, which contain all the information to be set, such as sampling speed, analog multiplexing switch, PGA setup, I/O selection, self-calibration, etc. Table 1 shows the main register STATUS of ADS1256, including: status register, analog multichannel switch register MUX, AD control register ADCON and data speed register DRATE..
• Internal structure: ADS1256 This device is mainly composed of analog multichannel switch (MUX), input buffer (BUF), programmable gain amplifier (PGA), fourth order modulator, programmable digital filter, clock generator, controller and serial SPI interface. Because the ADS1256 is provided with nine analog inputs, it can be configured as a 4-way differential input, an 8 way unipolar input, or a combination of differential and unipolar inputs using the analog multiway switch register..