MCP6291RT-E/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock

Name: MCP6291RT-E/OT
Brand: Microchip
SKU: MCP6291RT-E/OT
Availability: InStock

Microchip MCP6291 is a single general-purpose rail-to-rail input/output operational amplifier with 10 MHz bandwidth, 80 dB CMRR, 5 pA input bias current, and 1.8 V to 5.5 V single-supply operation. Available in SOT-23-5 package, RoHS compliant, in stock with worldwide shipping.

ACTIVEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

MCP6291RT-E/OTSOT23 (5-Pin)

Quick Facts

Manufacturer: Microchip
Package: SOT23 (5-Pin)
Pin Count: 5
Lifecycle: ACTIVE
Datasheet: MCP6291RT-E/OT Datasheet PDF
Category: Integrated Circuit
Price: From $0.4469(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 MCP6291RT-E/OT?

Rail-to-rail input and output on a 1.8 V to 5.5 V single supply for maximum dynamic range in low-voltage mixed-signal designs
10 MHz gain-bandwidth product enabling active filter implementation and wideband sensor amplification up to 100 kHz with gains of 10 V/V
Ultra-low 5 pA maximum input bias current allowing high-impedance source connection without measurable offset in photodiode and pH electrode amplifier circuits

What is MCP6291RT-E/OT used for?

The MCP6291 serves single-supply sensor conditioning in portable instruments, wearable devices, and IoT sensor nodes where the 1.8 V minimum supply covers LDO outputs from coin-cell or Li-ion regulated rails. Its rail-to-rail output swing maximizes ADC input range in 3.3 V and 5 V data acquisition systems without additional level-shifting circuitry. The SOT-23-5 package suits high-density PCB layouts in compact medical monitors and industrial transmitters with constrained board space.

What are the specifications of MCP6291RT-E/OT?

Pbfree Code	Yes
Manufacturer Package Code	SOT-23-5
Factory Lead Time	6Weeks
YTEOL	9
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	R-PDSO-G5
JESD-609 Code	e3
Low-Bias	YES
Low-Offset	NO
Micropower	NO
Number of Functions	1
Package Body Material	PLASTIC/EPOXY
Package Equivalence Code	TSOP5/6,.11,37
Package Shape	RECTANGULAR
Package Style	SMALL OUTLINE, LOW PROFILE
Packing Method	TAPE AND REEL
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	0.95mm
Terminal Position	DUAL
Unity Gain BW-Nom	10000
Voltage Gain-Min	31620
Wideband	NO
Package	SOT23 (5-Pin)

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 MCP6291RT-E/OT datasheet?

MCP6291RT-E/OT Datasheet Download

Official datasheet from Microchip

What are equivalent replacements for MCP6291RT-E/OT?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

What is the minimum supply voltage of the MCP6291, and which battery chemistries does it support directly?

The MCP6291 operates from a single supply as low as 1.8 V, which is compatible with two NiMH cells in series at end of life, regulated CR2032 coin-cell outputs, and LDO regulators in LiPo-powered IoT devices, enabling direct use without boost conversion in ultra-low-power wearable sensor nodes.

How does the MCP6291RT-E/OT CMRR of 80 dB affect signal accuracy in noisy industrial environments?

With an 80 dB CMRR, the MCP6291 rejects common-mode noise by a factor of 10000:1. A 10 mV ground noise spike on a 5 V industrial supply rail creates less than 1 µV of differential error referred to the input, preserving 12-bit measurement accuracy in factory automation sensor conditioning circuits exposed to switching converter interference.

What gain-bandwidth product does the MCP6291 offer, and how does it compare to a standard 1 MHz op-amp for filter design?

The MCP6291 provides a 10 MHz gain-bandwidth product versus a typical 1 MHz unity-gain bandwidth amplifier, allowing stable closed-loop gains of 100 V/V at 100 kHz without bandwidth limiting. This 10x advantage enables anti-aliasing filters and sensor preamplifiers at audio and ultrasonic frequencies in medical imaging and non-destructive testing equipment.

For a portable pH electrode measurement circuit, how does the MCP6291's input bias current specification matter?

pH glass electrodes present source impedances of 100 MΩ to 1 GΩ. The MCP6291's 5 pA maximum input bias current creates only 0.5 mV to 5 mV of voltage error across those impedances, which is within acceptable limits for 0.01 pH unit resolution measurements, avoiding the need for guarded traces or specialized electrometer-grade amplifiers in handheld pH meters.

When would an engineer select MCP6291RT-E/OT over MCP6021T-E/OT for a new design on a 3.3 V supply?

MCP6291RT-E/OT is the MCP6291 in tape-and-reel SOT-23-5 format while MCP6021T-E/OT is the same package variant of MCP6021. Both share 10 MHz bandwidth and 5 pA bias current on 2.5 V to 5.5 V supplies. The MCP6291 extends the lower supply limit to 1.8 V, making it preferable when the design must also operate from a 2 V battery-depleted rail or when the 1.8 V supply voltage headroom from a 3.3 V LDO output at minimum dropout matters.

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.

Aug 6, 2026

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.

Aug 6, 2026

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.

Aug 4, 2026

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

Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.

Aug 4, 2026

Why Buy from FindMyChip

Authorized Source

Verified supply chain with full traceability & inspection

Competitive Pricing

Factory-direct from China distributors, low MOQ

Fast Shipping

DHL Express 3–5 days · FedEx/UPS 5–7 days worldwide

Quality Guaranteed

30-day replacement for defective parts, no questions asked

About Microchip

Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.

View all Microchip parts →

More from Microchip

PIC16F18323-E/SN

Small Outline Packages

Integrated Circuit

PIC16F18115-I/MD

Small Outline No-lead

Integrated Circuit

ATTINY816-MZT-VAO

Integrated Circuit

MCP6499T-E/ST

Small Outline Packages

Integrated Circuit

MSC050SDA120BCT

Other

Schottky Diode

MCP4641-103E/ML

Quad Flat No-Lead

Integrated Circuit

AvailabilityIn Stock

Reference Price (USD)

From $0.4469

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
1+	$0.6700	$0.67
10+	$0.5900	$5.90
25+	$0.5600	$14.00
100+	$0.5000	$50.00
2250+	$0.4560	$1026.00
3000+	$0.4469	$1340.70

pcs

Unit price: $0.6700 · Total: $0.67

In Stock · 24h Response · Worldwide Shipping

Direct Contact

WhatsApp Inquiry Email RFQ

Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”

Sarah Kim

VP Engineering, NovaBit Electronics, South Korea

MCP6291RT-E/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock

What are the key features of MCP6291RT-E/OT?

What is MCP6291RT-E/OT used for?

What are the specifications of MCP6291RT-E/OT?

Compliance & Regulatory

Where can I find the MCP6291RT-E/OT datasheet?

What are equivalent replacements for MCP6291RT-E/OT?

Frequently Asked Questions

What is the minimum supply voltage of the MCP6291, and which battery chemistries does it support directly?

How does the MCP6291RT-E/OT CMRR of 80 dB affect signal accuracy in noisy industrial environments?

What gain-bandwidth product does the MCP6291 offer, and how does it compare to a standard 1 MHz op-amp for filter design?

For a portable pH electrode measurement circuit, how does the MCP6291's input bias current specification matter?

When would an engineer select MCP6291RT-E/OT over MCP6021T-E/OT for a new design on a 3.3 V supply?

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

More from Microchip

You May Also Like