MIKROE ADC 18 Click

ADC 18 Click is a compact add-on board that contains a high-performance data converter. This board features the MAX22005 an SPI-configurable twelve-channel 24-bit analog-to-digital converter (ADC) from Analog Devices. Input channels can be used as twelve single-ended six differential and up to eight multichannel configurable differential inputs. In total the device supports up to 26 different configurations. The ADC is used with an integrated 5ppm/°C precision reference. Using high-voltage zero-drift input amplifiers standard industrial analog input voltage ranges are converted to the ADC input voltage range. This Click board™ offers high accuracy for the most demanding applications from general-purpose remote data acquisition to industrial applications. ADC 18 Click is supported by a mikroSDK compliant library which includes functions that simplify software development. ADC 18 Click as its foundation uses the MAX22005 a high-performance twelve-channel analog-to-digital converter from Analog Devices. The MAX22005 comes with an integrated 24-bit delta-sigma ADC input multiplexer signal conditioning and control logic block allowing ADC to communicate with MCU through a high-speed serial interface. An integrated delta-sigma ADC is shared between all channels with an integrated 5ppm/°C precision reference. Using high-voltage zero-drift input amplifiers standard industrial analog input voltage ranges are converted to the ADC input voltage range. Input channels can be used as twelve single-ended six differential and up to eight multichannel configurable differential inputs. In total the device supports up to 26 different configurations. The MAX22005 can also be configured as an analog-input current-mode device using an external precision resistor per channel or configurable analog-input using an external precision resistor and low-cost switch per channel. All input ports are robustly protected up to ±36V reverse polarity and ±2kV surge pulses without the need for TVS diodes and factory calibrated with a best-in-class system performance of less than 0.05% FSR Total-Unadjusted-Error (TUE) over temperature. ADC 18 Click communicates with MCU through a standard SPI interface and operates at clock rates up to 30MHz for all configurations and information management and acquiring conversion results. In addition it also uses several mikroBUS™ pins. An active-low reset signal routed on the RST pin of the mikroBUS™ socket activates a hardware reset of the system while the INT pin on the mikroBUS™ socket represents a standard interrupt feature providing a user with feedback information. It also has an additional data ready interrupt marked as RDY and routed on the AN pin of the mikroBUS™ socket used to signal when a new ADC conversion result is available in the data register. This Click board™ can be operated only with a 3.3V logic voltage level. It also has an analog inputs external power supply terminal where it is necessary to bring ±15V to accept ± 10V inputs whose full-scale range is ± 12.5V. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However the Click board™ comes equipped with a library containing functions and an example code that can be used as a reference for further development.