MCP6V28-E/SN

Instrumentation, Op Amps, Buffer Amps Overview

The MCP6V28-E/SN is a single-channel auto-zeroed operational amplifier from the MCP6V26/7/8 family, manufactured by Microchip Technology. It features a typical gain bandwidth product of 2 MHz and a slew rate of 1 V/µs. The device operates on a single supply voltage ranging from 2.3V to 5.5V with a typical quiescent current of 620 µA per amplifier. Key DC precision specifications include an input offset voltage of ±2 µV maximum, an input offset voltage drift of ±50 nV/°C, and a minimum open-loop gain of 125 dB. It offers rail-to-rail input and output capabilities.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Auto-zero architecture providing high DC precision with low offset voltage and minimal drift
• Integrated Chip Select (CS) pin for switching between active operation and low-power shutdown modes
• Rail-to-rail input and output stages enabling full signal swing across the supply range
• Unity-gain stability with strong rejection of switching noise and absence of 1/f noise

Instrumentation, Op Amps, Buffer Amps Applications

• Portable instrumentation
• Sensor conditioning circuits
• Temperature measurement systems
• DC offset correction applications
• Medical instrumentation

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify that the ordering suffix 'E' corresponds to the extended temperature range (-40°C to +125°C) as specified in the datasheet. Confirm the package type 'SN' indicates the SOIC-8 footprint. Ensure the component matches the MCP6V28 variant which includes the Chip Select functionality, distinct from the standard MCP6V26.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when ultra-low offset voltage and drift are critical requirements. The integrated Chip Select feature allows for power management in battery-operated devices. Compare against MCP6V26 if shutdown capability is not needed, or MCP6V01/2/3 for lower power consumption at the expense of higher noise and bandwidth.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the MCP6V26/7/8 series of precision op amps designed using an advanced CMOS process. The family provides input offset voltage correction for very low offset applications. The MCP6V28 specifically adds digital control via the CS pin, differentiating it from the MCP6V26 (single channel) and MCP6V27 (dual channel).

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

MCP6V26-E/SN: Identical electrical performance but lacks the Chip Select (CS) pin functionality.

Instrumentation, Op Amps, Buffer Amps FAQ

How does the Chip Select (CS) pin affect power consumption?

When the CS pin is driven high, the amplifier enters a low-power shutdown mode, significantly reducing the supply current compared to normal operation.

What is the typical input offset voltage for this device?

The input offset voltage is typically ±2 µV maximum at +25°C.