MCP631-E/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP631-E/SN is a single-channel 24 MHz operational amplifier with extended temperature rating, 81 dB typical CMRR, and 0.005 µA maximum input bias current in an 8-pin SOIC package. Its voltage-feedback architecture with internal compensation suits wideband precision signal conditioning across demanding temperature ranges. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP631-E/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1745(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
- 24 MHz gain-bandwidth product enabling active filtering and amplification of signals up to the mid-frequency range without external compensation
- Extended temperature operation with 81 dB typical CMRR (66 dB minimum) for reliable differential signal rejection across harsh industrial environments
- Ultra-low 0.005 µA maximum input bias current preserving measurement accuracy with high-impedance sensors and photodetectors
- Voltage-feedback architecture with internal frequency compensation in a standard 8-pin SOIC for straightforward PCB integration
Applications
The MCP631-E/SN targets active filter design, data acquisition front-ends, and wideband transimpedance amplifier (TIA) stages in industrial and extended-temperature applications where 24 MHz bandwidth is required. Its low 0.005 µA bias current makes it ideal for photodiode current-to-voltage conversion in optical sensor modules and particle counters operating from -40°C to +125°C. Engineers also use it in anti-aliasing filter circuits preceding high-speed ADCs and in audio test equipment where flat frequency response up to 24 MHz provides ample design margin.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 10 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.005 µA |
| Common-mode Reject Ratio-Min | 66dB |
| Common-mode Reject Ratio-Nom | 81dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 8000 µV |
| JESD-30 Code | R-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 | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Slew Rate-Nom | 10V/us |
| Supply Current-Max | 3.6mA |
| Supply Voltage Limit-Max | 6.5V |
| Supply Voltage-Nom (Vsup) | 2.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Unity Gain BW-Nom | 24000 |
| Voltage Gain-Min | 25100 |
| Wideband | NO |
| 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 | Mainland China, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does MCP631-E/SN's 24 MHz GBW compare to a standard 1 MHz op-amp for active filter cutoff flexibility?
With a 24 MHz gain-bandwidth product, MCP631-E/SN can implement a unity-gain stable second-order Sallen-Key filter with a cutoff frequency up to several hundred kHz while maintaining greater than 40 dB of stopband attenuation. A standard 1 MHz GBW op-amp limits Sallen-Key cutoff frequencies to under 10 kHz before phase-margin degradation causes peaking, making MCP631-E/SN 24× more capable for designing anti-aliasing filters ahead of 100 kSps or faster ADCs in data acquisition systems.
For extended-temperature industrial designs, how does MCP631-E/SN's 66 dB minimum CMRR performance hold up across -40°C to +125°C?
The MCP631-E/SN is specified to maintain at least 66 dB CMRR across the extended temperature range from -40°C to +125°C, ensuring that common-mode interference attenuates by a factor of more than 2000:1 even at temperature extremes encountered in engine bays, outdoor enclosures, and industrial furnace controllers. The 81 dB typical CMRR at room temperature provides additional margin, so most production units will reject 60 Hz or 50 Hz mains interference to below 10 µV referred to input even after temperature drift reduces the typical value by several dB.
When should an engineer choose MCP631-E/SN over MCP6043-E/SN for a photodiode transimpedance amplifier?
MCP631-E/SN's 24 MHz GBW makes it the better choice when the photodiode TIA must maintain flat gain response from DC to frequencies above 100 kHz—for example, in optical barcode scanners scanning at 500 kHz symbol rates or laser rangefinders with pulse rise times under 1 µs. MCP6043-E/SN has lower GBW (under 10 MHz) and is better suited for slow photodiode applications like ambient light sensing below 1 kHz. Both share the same 0.005 µA maximum input bias current and 8-pin SOIC footprint, so swapping between them only requires changing the feedback capacitor value to reset the TIA bandwidth.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.1745 | $0.17 |
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