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High-performance operational amplifiers

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MICROCHIP Technology has introduced the MCP614X family of operational amplifiers that feature a gain bandwidth product (GBWP) of 100kHz, an ultra-low typical quiescent current of 600nA and a maximum quiescent current of 1μA.

With a typical power consumption of less than 1μW at quiescent state with 1.4V supply, the op amps are a cost-effective way to improve performance and significantly increase the operational life of high-performance battery-powered systems.

The MCP6141, MCP6142, MCP6143 and MCP6144 op amps offer rail-to-rail input and output that enables the full voltage supply range to be utilised from 5.5V down to 1.4V supply operation.

The low voltage operation reduces the need for doubler circuitry and the low quiescent current further reduces demand on the battery.

Fully specified from -40°C to +85°C, the devices have a typical quiescent current of 600nA, which considerably extends battery life over traditional 100kHz op amps.

The devices are stable for applications with a gain of 10 (V/V) or better, such as sensors, portable instrumentation, battery-powered applications, RFID tags, pH meters, micropower sensors, solar powered systems and devices powered by a single communication loop such as phones, security and building safety devices.

To support the MCP614X family, Microchip offers the FilterLab Active Filter Design Tool, which simplifies active filter design for embedded systems designers using op amps for analog filter purposes.

Available free from Microchip's website (www.microchip.com), the FilterLab software provides full schematic diagrams of the filter circuit with component values and displays the frequency response.

The devices are available in 8-pin PDIP, SOIC, and MSOP packages and 14-pin PDIP, SOIC and TSSOP packages.

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