CC Blog Newsletter Product News Tech News

Current Sense Amplifiers Boast Low Offset Voltage

Microchip Technology has introduced its high-side current sense amplifiers. They feature what the company claims is the industry’s lowest offset for AEC-Q100 Grade 0 qualified high-side current sense amplifier devices. The MCP6C02 amplifier is offered in both a Grade 1 6-pin SOT-23 package and a Grade 0 8-pin 3×3 VDFN package. Delivering a maximum offset error of only 12µV, the VDFN package offers the lowest offset voltage for any Grade 0 high-side current sense amplifier, says Microchip.

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, says Microchip. The MCP6C02 is designed to combat electrically noisy environments and address the need for higher accuracy current measurement.

Specified over a temperature range of -40°C to +150°C, the MCP6C02’s offset error allows the use of smaller value shunt resistors while also maintaining a high measurement resolution. This enables a more accurate and 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 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.

Microchip’s 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, it enables a quick evaluation of the device for unidirectional and bidirectional modes of operation.

The MCP6C02 6-pin SOT-23 package option is available for $1.22, while the MCP6C02 8-pin 3×3 VDFN package option is available for $1.41, each in 10,000-unit quantities. The MCP6C04 6-pin SOT-23 package is available for $0.98, also in 10,000-unit quantities.

— ADVERTISMENT—

Advertise Here

Microchip Technology | www.microchip.com


Keep up-to-date with our FREE Weekly Newsletter!



Don't miss out on upcoming issues of Circuit Cellar.

Note: We’ve made the May 2020 issue of Circuit Cellar available as a free sample issue. In it, you’ll find a rich variety of the kinds of articles and information that exemplify a typical issue of the current magazine.


Would you like to write for Circuit Cellar? We are always accepting articles/posts from the technical community. Get in touch with us and let's discuss your ideas.

Supporting Companies

Slider

Upcoming Events

Copyright © 2021 KCK Media Corp.

Current Sense Amplifiers Boast Low Offset Voltage

by Circuit Cellar Staff time to read: 2 min