Microchip Technology Introduces Zero-Drift Operational Amplifier with On-Chip EMI Filtering

Due to the fast expansion of wireless capabilities, like Bluetooth- and Wi-Fi®-enabled applications, high-frequency noise in people’s work and livable space environments are increasing considerably.

In order to enable designers to offer better performance and, at the same time, manage an increasingly challenging environment more easily, Microchip Technology Inc. has launched the MCP6V51 zero-drift operational amplifier. This latest device offers ultra-high-precision measurement and provides on-chip electromagnetic interference (EMI) filters and a wide operating range to reduce the increasing effect of high-frequency interference.

The development of factory automation and industrial control has resulted in a slight increase in the number of sensors that have to be tracked. The MCP6V51 amplifier has been specifically developed to provide stable and precise data from a wide range of sensors. The MCP6V51’s self-correcting zero-drift architecture allows ultra-high Direct Current (DC) precision, offering just ±36 nV/°C of maximum offset drift and a maximum offset of ±15 µV. Suitable for applications like building automation, factory automation, and process control, the MCP6V51is also capable of supporting an exceptionally wide operating voltage range, from 4.5 to 45 V.

High-frequency interference within sensitive analog measurement is turning out to be a major consideration, thanks to the emergence of wireless sensors and capabilities. Within the MCP6V51, the extra on-chip EMI filtering offers protection from these unpredictable and unwanted interference sources.

Microchip is often thought of as a microcontroller company, but we have industry-leading analog to augment our total system solution for the industrial space. The combination of a complex chopper-stabilized architecture and a higher-voltage process technology makes these devices challenging from a design and manufacturing standpoint. Microchip is a company that can do it—and do it well.

Bryan J. Liddiard, Vice President, Mixed-Signal and Linear Business Unit, Microchip Technology.

Distributed control systems and programmable logic controllers used within industrial automation run on a range of voltage rails, like 12, 24, and 36 V. The MCP6V51 amplifier provides the flexibility to support an array of supply voltages and also contains overhead to account for supply transients by supporting up to 45 V operating range.

Development Tools

For assessment, the 8-Pin SOIC/MSOP/TSSOP/DIP Evaluation Board (Part # SOIC8EV) is a blank PCB through which the operation of the 8-pin devices from Microchip Technology can be effortlessly evaluated. Each device pin is joined to a pull-down resistor, a pull-up resistor, a loading capacitor, and an in-line resistor. The PCB pads enable the installation of surface or through-hole mount connectors to facilitate connection to the board. Extra passive component footprints are provided on the board to enable the implementation of simple circuits.

Pricing and Availability

The MCP6V51 is now available for sampling and volume production in 5-lead SOT-23 as well as 8-lead MSOP packages. Prices start at $0.98 USD per 10,000 units for the SOT-23-5 package.

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