Microchip MCP601T-I/OT Single Supply CMOS Op-Amp: Datasheet, Pinout, and Application Circuits
The Microchip MCP601T-I/OT is a single general-purpose operational amplifier that combines low power consumption with excellent performance for a wide range of analog circuit applications. As part of the MCP601 family, this op-amp is designed to operate from a single supply voltage as low as 2.7V, making it an ideal choice for battery-powered and portable devices. Its CMOS input stage provides very high input impedance and low bias current, which is crucial for sensor interfacing and precision applications.
Key Datasheet Specifications
A thorough review of the datasheet reveals the strengths of this component. It features a typical quiescent current of just 100 µA, which is a key factor in extending battery life. The device offers a gain bandwidth product of 2.8 MHz and a slew rate of 2.3 V/µs, providing a good balance between speed and power efficiency. Furthermore, it exhibits low input offset voltage and a phase margin of 60°, ensuring stability under various operating conditions. The MCP601 is stable at unity gain and is specified over the extended industrial temperature range (-40°C to +85°C).
Pinout Configuration
The MCP601T-I/OT is available in the space-saving SOT-23-5 package. Its pinout is straightforward:
Pin 1 (Vout): Output
Pin 2 (Vss): Negative Power Supply (Ground)
Pin 3 (Vin+): Non-Inverting Input
Pin 4 (Vin-): Inverting Input
Pin 5 (Vdd): Positive Power Supply
This simple pinout allows for easy implementation on printed circuit boards (PCBs), even in densely packed designs.
Typical Application Circuits
The versatility of the MCP601T-I/OT is demonstrated through its use in several fundamental circuits.
1. Non-Inverting Amplifier: This is a common configuration for achieving high input impedance and a gain greater than one. The gain is set by two resistors (R1 and R2) with the formula Av = 1 + (R2/R1). This circuit is perfect for buffering and amplifying signals from high-impedance sources like microphones or piezoelectric sensors.
2. Inverting Amplifier: Used for signal inversion and amplification, the gain is set by the ratio of the feedback resistor (Rf) to the input resistor (Rin), given by Av = - (Rf/Rin). This setup is widely used in audio processing and active filter stages.
3. Active Low-Pass Filter: By incorporating a feedback capacitor in parallel with the feedback resistor in an inverting or non-inverting configuration, the MCP601 can be used to build an active low-pass filter. This circuit attenuates high-frequency noise, which is essential for cleaning up analog signals before they are digitized by an ADC.
4. Voltage Follower (Unity-Gain Buffer): In this configuration, the output is directly connected to the inverting input. The result is a circuit with very high input impedance and very low output impedance. It is invaluable for isolating a sensitive source from a heavy load, preventing loading effects.
ICGOODFIND: The Microchip MCP601T-I/OT stands out as a highly efficient and reliable single-supply op-amp. Its exceptional combination of low power consumption, rail-to-rail output swing, and CMOS input characteristics makes it an outstanding choice for designers working on portable instrumentation, sensor conditioning modules, and low-power analog systems. Its stability and ease of use further solidify its position as a fundamental building block in modern electronic design.
Keywords: Single Supply, Low Power, CMOS Op-Amp, Rail-to-Rail Output, SOT-23-5.
