Provide an accurate digital representation of analog signals with ADS122U04 and STM32L496AG

ADC 10 Click is based on the ADS122U04, a 24-bit precision ΔΣ analog-to-digital converter with UART compatible interface from Texas Instruments. In addition to the ΔΣ ADC and single-cycle settling digital filter, the ADS122U04 offers a low-noise, high input impedance, programmable gain amplifier up to 128, an internal 2.048V voltage reference, and a clock oscillator. It also integrates a highly linear and accurate temperature sensor and two matched programmable current sources for sensor excitation. The ADS122U04 is fully configured through five registers through the UART interface and can perform conversions at data rates up to 2000 samples per second with single-cycle settling. The A/D converter measures a differential signal brought to its input terminals, representing the voltage difference between the + and – nodes of the input terminal. The ADS122U04 has two available conversion modes: Single-Shot conversion and

Continuous Conversion Mode. In Single-Shot conversion Mode, the ADC performs one input signal conversion upon request, stores the value in an internal data buffer, and then enters a low-power state to save power. While in Continuous Conversion Mode, the ADC automatically begins the conversion as soon as the previous conversion is completed. ADC 10 Click communicates with MCU using the UART interface at 115200bps with commonly used RX and TX pins for the data transfer. ADS122U04 utilizes the interrupt pin routed on the INT pin of the mikroBUS™ socket to indicate when a new conversion result is ready for retrieval or can be additionally configured as a GPIO pin. Alongside this feature, this Click board™ also has a Reset function routed on the RST pin of the mikroBUS™ socket that will put the ADS122U04 into the reset state by driving the RST pin HIGH. When a Reset occurs, the configuration registers reset to the

default values, and the device enters a low-power state. Besides its internal 2.048V reference, the ADS122U04 can use additional reference voltage values for applications that require a different reference voltage or a ratiometric measurement approach. The reference voltage level can be selected by positioning the SMD jumper labeled REF SEL to an appropriate position choosing between 3.3V, provided by the MCP1501, or 4.096V, provided by LT6656. Those voltages may be used as the reference input that results in accuracy and stability. This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.

The 32L496GDISCOVERY Discovery kit serves as a comprehensive demonstration and development platform for the STM32L496AG microcontroller, featuring an Arm® Cortex®-M4 core. Designed for applications that demand a balance of high performance, advanced graphics, and ultra-low power consumption, this kit enables seamless prototyping for a wide range of embedded solutions. With its innovative energy-efficient

architecture, the STM32L496AG integrates extended RAM and the Chrom-ART Accelerator, enhancing graphics performance while maintaining low power consumption. This makes the kit particularly well-suited for applications involving audio processing, graphical user interfaces, and real-time data acquisition, where energy efficiency is a key requirement. For ease of development, the board includes an onboard ST-LINK/V2-1

debugger/programmer, providing a seamless out-of-the-box experience for loading, debugging, and testing applications without requiring additional hardware. The combination of low power features, enhanced memory capabilities, and built-in debugging tools makes the 32L496GDISCOVERY kit an ideal choice for prototyping advanced embedded systems with state-of-the-art energy efficiency.