VCT Monitor Click Board™

Product Code: MIKROE-4353

How Does The VCT Monitor Click Board™ Work? The VCT Monitor Click Board™ is based on the LTC2990, a high-performance temperature, voltage, and current monitor with the I2C serial interface from Analog Devices. The LTC2990 can be configured to measure many combinations of internal temperature, remote temperature, remote voltage or current, and internal VCC with single or repeated measurements. It fits in systems needing sub-millivolt voltage resolution, 1% current measurement, and 1°C temperature accuracy or any combination of the three. The input signals are selected with an input MUX, controlled by the control logic block. The control logic uses the mode bits in the control register to manage the sequence and types of data acquisition. The control logic also controls the variable current sources during remote temperature acquisition. The ADC performs the necessary conversion(s) and supplies the data to the control logic for further processing in the case of temperature measurements or routing to the appropriate data register for voltage and current measurements.

Remote measurements are performed on terminals labelled as TEMP and LOAD using multiple ADC conversions and source currents to compensate for sensor series resistance. The LTC2990 is calibrated to yield the correct temperature for a remote diode with an ideality factor of 1.004. The VCT Monitor Click Board™ is designed to be operated with both 3.3V and 5V logic voltage levels that can be selected via VCC SEL jumper. This allows for both 3.3V and 5V capable MCUs to use the I2C communication lines properly. However, the Click board™ comes equipped with a library that contains easy to use functions and an example code that can be used as a reference for further development. SPECIFICATIONS Type Current sensor Applications Can be used for applications like supply voltage monitoring and remote diode temperature measurement, e.g., in industrial systems where thermal management is crucial for maximizing performance. On-board modules The VCT Monitor Click Board™ is based on the LTC2990, a high-performance temperature, voltage, and current monitor with the I2C serial interface from Analog Devices. Key Features Low power consumption, high precission Interface I2C Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V or 5V PINOUT DIAGRAM This table shows how the pinout of the VCT Monitor Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes NC 1 AN PWM 16 NC NC 2 RST INT 15 NC NC 3 CS RX 14 NC NC 4 SCK TX 13 NC NC 5 MISO SCL 12 SCL I2C Clock NC 6 MOSI SDA 11 SDA I2C Data Power Supply 3.3V 7 3.3V 5V 10 5V Power Supply Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description LD1 PWR - Power LED Indicator JP1 VCC SEL Left Power Supply Voltage Selection 3V3/5V: Left position 3V3, Right position 5V JP2-JP3 ADDR SEL Left I2C Address Selection: Left position 0, Right position 1 VCT MONITOR CLICK ELECTRICAL SPECIFICATIONS Description Min Typ Max Unit Supply Voltage -0.3 - 6 V Accuracy (Local) - - ±3.5 °C Accuracy (Remote) - - ±1.5 °C