Current sense amplifier offers low offset for AEC-Q100 Grade 0 qualified devices, enabling better current measurement solution
The MCP6C02 amplifier delivers a maximum offset error of only 12 µV, thus offering low offset voltage. Specified over a temperature range of -40 degrees Celsius to +150 degrees Celsius, its offset error allows the use of smaller value shunt resistors while also maintaining a high measurement resolution, which enables a more accurate and energy-efficient current measurement solution for applications exposed to extreme temperatures, like the motor within a vehicle’s water pump. Additionally, the VDFN package is processed with wettable flank plating, allowing for visual inspection of the solder joints and removing the need for x-ray scanning as required for traditional DFN packages.
The MCP6C02 and MCP6C04 devices also feature an on-chip electromagnetic interference (EMI) filter and a zero-drift architecture. The EMI filter provides added protection against high-frequency electrical interference, such as wireless hotspots and radio frequencies, while the self-correcting architecture brings increased accuracy to current measurement. Together these features enable developers to create higher performance solutions in a wide variety of applications, such as creating a current-controlled feedback loop for a power supply or motor, monitoring and charging batteries, or monitoring current levels for safety reasons.
The new ADM01104 evaluation board supports both the MCP6C02 and MCP6C04 high-side current sense amplifiers, and each device is pin, package and function compatible. To avoid subjection to high voltages and currents, the evaluation board ships pre-populated, providing proper filtering and protection of the input pins. Offering multiple reference voltage options enables a quick evaluation of the device for unidirectional and bidirectional modes of operation.
The MCP6C02 is available in both 6-pin SOT-23 package option and 8-pin 3×3 VDFN package option. The MCP6C04 is available in a 6-pin SOT-23 package. They can be obtained from Microchip Technology.