Op amps with on-chip, one-shot calibration circuit

CHANDLER, USA: Microchip Technology Inc. announced the world’s first and only op amps to include mCal, an on-chip calibration circuit that calibrates offset voltage at power-up using an internal power on-reset detector, or based upon the state of an external pin.

The result is a low initial voltage offset and a means to minimize drift over time and temperature, which are extremely important for applications involving instrumentation and sensor conditioning. The high-bandwidth (50 MHz), low-power MCP651/2/5 (MCP65X) op amps provide low bias and quiescent currents, high output-drive capability and a rail-to-rail output for better performance across the entire operating-voltage range. This feature set makes the op amps ideal for even the most demanding applications—including those in the consumer, industrial and medical markets.

The MCP65X op amps feature a high output-drive current of 95 milliamperes, which enables them to drive heavy loads and results in better performance across a wide range of applications. With their rail-to-rail output, the op amps provide greater dynamic range—even at lower operating voltages—for more accurate performance across the entire operating-voltage range.

“The MCP65X is the industry’s first op amp family to feature an on-chip, one-shot calibration circuit that is active upon power-up or controlled via an external hardware pin,” said Bryan Liddiard, vice president of marketing with Microchip’s Analog and Interface Products Division. “This unique mCal feature leverages Microchip’s expertise in both analog and digital to provide an innovative solution for high-speed, high-precision applications.”