MCP601T-I/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
MCP601T-I/OT is a single-channel CMOS operational amplifier from Microchip operating on a 2.7 V to 5.5 V single supply with rail-to-rail output. It provides 90 dB typical CMRR and an extremely low 60 fA maximum input bias current for precision high-impedance sensing. Packaged in a tiny 5-pin SOT-23 for space-constrained portable and battery-powered designs.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MCP601T-I/OT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3900(MOQ 25)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP601T-I/OT?
- Single-supply operation from 2.7 V to 5.5 V with rail-to-rail output enabling direct interface to 3.3 V and 5 V ADC inputs
- Ultra-low 60 fA maximum input bias current ideal for pH electrode buffers, photodiode transimpedance, and charge integrator circuits
- 90 dB typical CMRR (75 dB minimum) providing excellent rejection of power-supply noise in single-supply sensor designs
- 5-pin SOT-23 package measuring 2.9 mm x 1.6 mm for minimal footprint in portable instruments and wearable electronics
What is MCP601T-I/OT used for?
The MCP601T-I/OT is used in photodiode transimpedance amplifiers and ion-selective electrode front-ends where femtoamp-level input bias currents prevent charge leakage from corrupting the measurement. Battery-powered data loggers and portable pH meters benefit from its 2.7 V to 5.5 V supply range and rail-to-rail output that maximizes ADC input swing. Active single-pole low-pass filter stages in industrial sensor conditioning modules also use it for its unity-gain stability and compact SOT-23 form factor.
What are the specifications of MCP601T-I/OT?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-5 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.00006 µA |
| Common-mode Reject Ratio-Min | 75dB |
| Common-mode Reject Ratio-Nom | 90dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 3000 µV |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Low-Bias | YES |
| Low-Offset | NO |
| Micropower | YES |
| 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, SHRINK PITCH |
| Packing Method | TAPE AND REEL |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Slew Rate-Nom | 2.3V/us |
| Supply Current-Max | 0.325mA |
| Supply Voltage Limit-Max | 7V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Unity Gain BW-Nom | 2800 |
| Voltage Gain-Min | 56200 |
| Wideband | NO |
| ## MCP601T-I/OT Alternates Showing results | Image |
| 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 | Malaysia, Thailand |
Where can I find the MCP601T-I/OT datasheet?
MCP601T-I/OT Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP601T-I/OT?
Compatible alternatives and drop-in replacements for MCP601T-I/OT:
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Frequently Asked Questions
Why is the 60 fA input bias current of the MCP601T-I/OT critical for a pH electrode measurement circuit?
A glass pH electrode has an output impedance of 100 Mohm to 1 Gohm. With a 60 fA maximum input bias current, the voltage error introduced by current flowing through that impedance is at most 6 µV to 60 µV—well below the 59 mV per pH unit Nernst slope—preventing bias-current-induced offset from distorting the pH reading across the full 0–14 pH range.
What CMRR specification does the MCP601T-I/OT guarantee and how does it perform against supply ripple?
The MCP601T-I/OT guarantees a minimum CMRR of 75 dB and typically achieves 90 dB. A 75 dB CMRR means a 100 mV common-mode signal—such as supply ripple coupled into sensor wiring—is attenuated to approximately 17 µV at the output. In a 12-bit, 3.3 V ADC system this corresponds to less than 0.02 LSB of error, ensuring clean conversions in noisy industrial environments.
For a 3.3 V portable sensor node, what output voltage swing can a designer expect from the MCP601T-I/OT?
With a 3.3 V single supply and a light resistive load, the rail-to-rail output typically swings within 10 mV to 20 mV of each rail, delivering an effective output range of approximately 0.02 V to 3.28 V. This nearly 3.26 V swing utilizes over 99% of the ADC's 3.3 V full-scale input range, maximizing resolution compared to non-rail-to-rail amplifiers that may lose 0.5 V or more at each rail.
How does the MCP601T-I/OT SOT-23-5 footprint compare to an 8-pin SOIC single op-amp for a space-limited wearable design?
The SOT-23-5 package body measures 2.9 mm x 1.6 mm with 0.95 mm pitch leads, occupying roughly 4.6 mm2 of PCB area. An equivalent 8-pin SOIC single op-amp measures 4.9 mm x 3.9 mm, taking up about 19 mm2. Choosing the MCP601T-I/OT SOT-23-5 saves approximately 14 mm2 per amplifier channel, a significant advantage in wearable patches and hearing-aid PCBs where every square millimeter is contested.
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