A good PCB layout for the MAX4714EXT+T involves keeping the input and output traces short and separate, using a solid ground plane, and placing the device close to the input and output connectors. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
To ensure accuracy, it's essential to follow proper PCB layout guidelines, use a high-accuracy shunt resistor, and calibrate the device using a known current source. Additionally, consider using a Kelvin connection to the shunt resistor to minimize errors.
The MAX4714EXT+T can measure currents up to 100A. In overcurrent conditions, the device has an internal overcurrent detection circuit that will latch off the output if the current exceeds 120% of the maximum rated current. The device will automatically restart once the overcurrent condition is removed.
The MAX4714EXT+T has built-in EMI and RFI filtering, including a 2.5MHz bandwidth filter on the current sense input and a 100kHz bandwidth filter on the voltage sense input. Additionally, the device is designed to meet CISPR 25 Class 5 and ISO 11452-2 standards for electromagnetic compatibility.
The MAX4714EXT+T operates over a temperature range of -40°C to +125°C. The device's accuracy is affected by temperature, with a typical error of ±1.5% over the entire temperature range. However, the device's internal temperature compensation circuitry helps to minimize temperature-related errors.
MAX4714EXT+T datasheet
by Maxim Integrated Products
