Zero-drift operational amplifier provides EMI filtering

The zero-drift operational amplifier, MCP6V51, has been launched by Microchip. The new device provides ultra-high precision measurement while minimizing the increasing influence of high-frequency interference. The MCP6V51 offers a wide operating range and on-chip Electromagnetic Interference (EMI) filters.

The growth of industrial control and factory automation has led to an increase in the number of sensors that need to be monitored, and the MCP6V51 amplifier is designed to provide accurate, stable data from a variety of sensors. The self-correcting zero-drift architecture of the MCP6V51 enables ultra-high Direct Current (DC) precision, providing a maximum offset of ±15 microvolts (µV) and only ±36 nanovolts per degree Celsius (nV/°C) of maximum offset drift. Suited for applications such as factory automation, process control and building automation, the MCP6V51 also supports an extremely wide operating voltage range, from 4.5 to 45V.

With the proliferation of wireless sensors and capabilities, high frequency interference within sensitive analogue measurement is becoming a critical consideration. The additional on-chip EMI filtering within the MCP6V51 provides protection from these unwanted and unpredictable interference sources. This allows designers to provide improved performance while more easily managing an increasingly difficult environment.

Programmable logic controllers and distributed control systems utilized within industrial automation run on a variety of voltage rails, such as 12, 24 or 36V. The MCP6V51 offers the flexibility to support a wide range of supply voltages and includes overhead to account for supply transients by supporting an operating range up to 45V.