MCP6291-E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
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.
- 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
Key Features
- 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
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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| 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 |
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