MCP654-E/ST

Instrumentation, Op Amps, Buffer Amps Overview

The MCP654-E/ST is a quad operational amplifier from the MCP651/1S/2/3/4/5/9 family, manufactured by Microchip Technology. It features a gain-bandwidth product of 50 MHz and a slew rate of 30 V/µs. The device operates on a single supply voltage ranging from +2.5V to +5.5V. Key electrical characteristics include a maximum input offset voltage of ±200 µV after calibration, a typical input bias current of 6 pA, and a quiescent current of 6.0 mA per channel. It offers rail-to-rail output capability and includes an input range that extends to the negative rail without phase reversal.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Self-calibrating architecture using mCal technology at power-up to minimize input offset voltage.
• Rail-to-rail output swing with an input common-mode voltage range that includes the negative supply rail.
• High-speed performance characterized by a 50 MHz gain-bandwidth product and 30 V/µs slew rate.
• Low-power mode operation available via the Calibration/Chip Select pin for reduced standby current.

Instrumentation, Op Amps, Buffer Amps Applications

• Driving A/D Converters
• Fast Low-side Current Sensing
• Power Amplifier Control Loops
• Optical Detector Amplifier
• Multi-Pole Active Filter

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix 'E/ST' corresponds to the TSSOP-14 package and Extended Temperature Range (-40°C to +125°C). Confirm that the datasheet revision matches the required design specifications. Ensure compatibility with single-supply operation between 2.5V and 5.5V. Check for any recent Product Change Notices (PCN) regarding packaging or manufacturing site changes.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high bandwidth and low offset are required in a quad configuration. The internal calibration reduces the need for external trimming circuits. Consider the 6.0 mA/ch quiescent current if power consumption is a constraint compared to lower-speed alternatives. The rail-to-rail output simplifies interface design with ADCs and other digital logic levels.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the MCP65x series of high-speed, low-offset operational amplifiers. The family includes single, dual, and quad variants with varying numbers of channels and CAL/CS pins. The MCP654 specifically integrates four independent amplifiers in a compact surface-mount package, optimized for applications requiring multiple signal conditioning stages.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct replacements within the same family include MCP654T-E/SL (SOIC-14 package) and MCP654-E/SN (SOIC-14 package). Verify pinout compatibility and thermal resistance differences between TSSOP and SOIC packages before substitution.

Instrumentation, Op Amps, Buffer Amps FAQ

Does the MCP654-E/ST require an external calibration circuit?

No, the device uses internal mCal technology for self-calibration at power-up. External components are not required for basic offset calibration.

What is the input common-mode voltage range?

The input common-mode voltage range includes the negative rail (VSS), allowing signals down to VSS - 0.3V depending on the supply voltage.

Is the MCP654-E/ST unity-gain stable?

Yes, the device is specified as unity-gain stable with a phase margin of approximately 65 degrees at a gain of +1 V/V.