MCP6291-E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock

Name: MCP6291-E/MS
Brand: Microchip
SKU: MCP6291-E/MS
Availability: InStock

Microchip MCP6291-E/MS is a single rail-to-rail input/output CMOS op-amp with 10 MHz gain-bandwidth product and 7 V/µs slew rate, operating from 2.5 V to 5.5 V. Delivers 0.005 µA bias current and 80 dB typical CMRR in an 8-pin MSOP package. Available from stock with worldwide shipping.

ACTIVEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

MCP6291-E/MSSmall Outline Packages

Quick Facts

Manufacturer: Microchip
Package: Small Outline Packages
Pin Count: 8
Lifecycle: ACTIVE
Datasheet: MCP6291-E/MS Datasheet PDF
Category: Integrated Circuit
Price: From $0.5660(MOQ 1)
Temp Range: -40.0°C to 125.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of MCP6291-E/MS?

10 MHz gain-bandwidth product with 7 V/µs slew rate enabling wide-bandwidth signal conditioning and active filter applications
Rail-to-rail input and output for maximum dynamic range on single-supply systems from 2.5 V to 5.5 V
Ultra-low 0.005 µA input bias current reducing offset errors in high-impedance sensor measurement circuits
80 dB typical CMRR in compact 8-pin MSOP package suitable for space-constrained precision designs

What is MCP6291-E/MS used for?

The MCP6291-E/MS is used in precision signal conditioning chains for ADC drivers, active anti-aliasing filters, and sensor buffer stages operating from 2.5 V to 5.5 V single-supply rails. Its 10 MHz GBW and 7 V/µs slew rate accommodate wideband audio processing and communications baseband filtering where the MCP601 family's 2.8 MHz bandwidth is insufficient. It is also well suited for portable medical monitors and IoT sensor hubs that require high-impedance inputs with sub-microamp bias current to preserve measurement accuracy from resistive or piezoelectric sensors.

What are the specifications of MCP6291-E/MS?

Pbfree Code	Yes
Manufacturer Package Code	MSOP-8
Reach Compliance Code	Compliant
Factory Lead Time	11Weeks
YTEOL	8
Amplifier Type	OPERATIONAL AMPLIFIER
Architecture	VOLTAGE-FEEDBACK
Average Bias Current-Max (IIB)	0.005 µA
Common-mode Reject Ratio-Min	65dB
Common-mode Reject Ratio-Nom	80dB
Frequency Compensation	YES
Input Offset Voltage-Max	5000 µV
JESD-30 Code	S-PDSO-G8
JESD-609 Code	e3
Low-Bias	YES
Low-Offset	NO
Micropower	NO
Number of Functions	1
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	TSSOP8,.19
Package Shape	SQUARE
Package Style	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Packing Method	TUBE
Peak Reflow Temperature (Cel)	260
Power	NO
Programmable Power	NO
Qualification Status	Not Qualified
Slew Rate-Nom	7V/us
Supply Current-Max	1.3mA
Supply Voltage Limit-Max	7V
Supply Voltage-Nom (Vsup)	5V
Surface Mount	YES
Technology	CMOS
Temperature Grade	AUTOMOTIVE
Terminal Finish	Matte Tin (Sn)
Terminal Form	GULL WING
Terminal Pitch	0.65mm
Terminal Position	DUAL
Time@Peak Reflow Temperature-Max (s)	40
Unity Gain BW-Nom	10000
Voltage Gain-Min	31620
Wideband	NO
## MCP6291-E/MS Alternates Showing results	Image
Package	Small Outline Packages

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
Moisture Sensitivity Level	MSL 1
ECCN	EAR99
HTS Code	8542.33.00.01
Country of Origin	Thailand

Where can I find the MCP6291-E/MS datasheet?

MCP6291-E/MS Datasheet Download

Official datasheet from Microchip

What are equivalent replacements for MCP6291-E/MS?

Compatible alternatives and drop-in replacements for MCP6291-E/MS:

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Frequently Asked Questions

How does MCP6291-E/MS compare to MCP601 in gain-bandwidth, and when should a designer choose the higher-speed part?

The MCP6291-E/MS provides a 10 MHz gain-bandwidth product versus 2.8 MHz for the MCP601, and its slew rate is 7 V/µs versus 2.3 V/µs. Designs with active filters above 300 kHz, ADC drivers for 12-bit converters sampling above 500 kSPS, or video-signal buffering at 1 Vpp benefit from the MCP6291's wider bandwidth, while the MCP601 is sufficient for audio-band circuits below 20 kHz.

What input bias current does MCP6291-E/MS have, and what source impedance is safe at its inputs?

The MCP6291-E/MS specifies a maximum input bias current of 0.005 µA (5 nA). With a 1 MΩ source impedance, this current produces at most 5 mV of input-referred error voltage, which is manageable for 10-bit ADC applications. For 16-bit precision, source impedances should be kept below 100 kΩ to hold the bias-current-induced error below 0.5 mV, or a matched source resistance on both inputs can cancel the systematic offset.

Can MCP6291-E/MS drive a 10 kΩ load on a 3.3 V single-supply system, and how close does the output swing to the rails?

Yes. The MCP6291-E/MS is specified with rail-to-rail output. At 3.3 V supply and a 10 kΩ load to the supply mid-point, the output swings to within approximately 100 mV of the positive rail and within 100 mV of ground, providing roughly 3.1 V of usable output range. For lighter 100 kΩ loads the saturation headroom drops below 25 mV, maximizing dynamic range in high-impedance circuits.

What CMRR does MCP6291-E/MS offer, and how does it affect common-mode noise rejection in differential sensor measurements?

The MCP6291-E/MS specifies a minimum CMRR of 65 dB and typical 80 dB. In a single op-amp difference amplifier with 0.1% matched resistors, the resistor tolerance limits CMRR to approximately 66 dB, so the op-amp's 65 dB minimum does not degrade the system CMRR. This is adequate for rejecting 50 Hz or 60 Hz mains interference of several volts amplitude while measuring millivolt-level differential thermocouple or bridge sensor signals.

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AvailabilityIn Stock

Reference Price (USD)

From $0.5660

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
1+	$0.7730	$0.77
10+	$0.7400	$7.40
25+	$0.6900	$17.25
100+	$0.6230	$62.30
7500+	$0.5680	$4260.00
10000+	$0.5660	$5660.00

pcs

Unit price: $0.7730 · Total: $0.77

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Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

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MCP6291-E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock

What are the key features of MCP6291-E/MS?

What is MCP6291-E/MS used for?

What are the specifications of MCP6291-E/MS?

Compliance & Regulatory

Where can I find the MCP6291-E/MS datasheet?

What are equivalent replacements for MCP6291-E/MS?

Frequently Asked Questions

How does MCP6291-E/MS compare to MCP601 in gain-bandwidth, and when should a designer choose the higher-speed part?

What input bias current does MCP6291-E/MS have, and what source impedance is safe at its inputs?

Can MCP6291-E/MS drive a 10 kΩ load on a 3.3 V single-supply system, and how close does the output swing to the rails?

What CMRR does MCP6291-E/MS offer, and how does it affect common-mode noise rejection in differential sensor measurements?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About Microchip

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