Microchip Technology MCP6C02 and MCP6C04 amplifiers
With the proliferation of automation and connectivity throughout the automotive and industrial markets, the need to accurately measure a dynamic current in the presence of high frequency noise often plagues modern vehicle and factory applications. In order to combat electrically noisy environments and address the need for higher accuracy current measurement, Microchip Technology introduced its high-side current sense amplifiers — said to feature the industry’s lowest offset for AEC-Q100 Grade 0 qualified high-side current sense amplifier devices.
AEC-Q100 qualified, the MCP6C02 amplifier is offered in both a Grade 1 6-pin SOT-23 package and a Grade 0 8-pin 3x3 VDFN package. Delivering a maximum offset error of only 12 µV, the VDFN package was designed to offer the lowest offset voltage for any Grade 0 high-side current sense amplifier. Specified over a temperature range of -40 to +150°C, its low offset error allows the use of small value shunt resistors while also maintaining a high measurement resolution. This enables an energy-efficient current measurement solution for those applications exposed to extreme temperatures, like the motor within a vehicle’s water pump. In addition, 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.
Microchip’s MCP6C02 and MCP6C04 devices also feature an on-chip electromagnetic interference (EMI) filter and a zero-drift architecture. The EMI filter helps provide added protection against high-frequency electrical interference, such as wireless hotspots and radio frequencies, while the self-correcting architecture should bring increased accuracy to current measurement. Together these features enable developers to create high-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.
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