The MCP6561T-E/OT is a high-performance, low-offset voltage operational amplifier (op-amp) from Microchip, designed for precision signal conditioning and sensor interface applications. Part of the MCP65X series, it integrates Microchip’s proprietary mCal™ on-chip calibration circuitry to minimize initial offset voltage (<100 µV) and reduce drift over time and temperature. This 8-pin SOIC package device operates across a wide supply voltage range (2.7V to 13.8V) and supports rail-to-rail output swing, enabling optimal dynamic range in low-voltage systems. It delivers a maximum output current of 95 mA, making it suitable for driving high-impedance loads in demanding applications.

Key Features

The MCP6561T-E/OT features a bandwidth of 50 MHz, a slew rate of 13 V/µs, and ultra-low input bias current (10 nA), ensuring fast and accurate signal processing. Its mCal calibration circuit, activated during power-up or via an external pin, compensates for process variations and environmental changes, achieving <1 µV/°C offset drift. The device operates with a quiescent current of 1.4 mA, balancing performance and power efficiency. It includes overvoltage protection, differential input capability up to ±30V (with external resistors), and is specified for industrial-grade temperature ranges (-40°C to +85°C).

Applications

Primarily used in precision instrumentation and sensor systems, the MCP6561T-E/OT is critical for medical devices (e.g., patient monitors, ultrasound equipment), industrial control (H-bridge drivers, data acquisition), and consumer electronics (microphone preamplifiers, optical sensors). Its high output drive and rail-to-rail operation suit applications requiring direct interface with ADCs or DACs. The device is also ideal for battery-powered systems needing low-power consumption and long-term stability in harsh environments.

Summary

The MCP6561T-E/OT combines best-in-class precision, robust calibration, and wide voltage flexibility, making it a premier choice for applications demanding minimal drift and high reliability in analog signal processing. Its mCal technology, coupled with high-speed performance and low power consumption, positions it as a key component in industrial, medical, and consumer electronics where accuracy and durability are paramount. This op-amp is essential for engineers designing cost-effective, high-fidelity systems in sensor-driven and instrumentation markets.