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
Key Features
- 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP601T-I/OT:
suggested
suggested
suggested
suggested
suggested
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.
Related Guides
150141RS73100 Red LED Indicator and Current-Resistor Design Guide
Design a reliable 150141RS73100 red LED indicator with worst-case resistor sizing, GPIO checks, PWM drive, layout, and production validation.
Jul 11, 2026
742792651 Ferrite Bead EMI Filter and Power Integrity Design Guide
Practical guidance for using 742792651 in ferrite-bead EMI filters, including bias, DCR, damping, layout, and validation.
Jul 11, 2026
How to Choose a Ferrite Bead for EMI Suppression Rails: Selection Guide
Compare 742792651 and related ferrite beads by impedance, current rating, DCR, package, layout, and EMI test context.
Jul 10, 2026
150141BS73100 Design Guide for 3528 Status Indicator LED Circuits
Design 3528 status indicator LED circuits with 150141BS73100: current setting, resistor sizing, polarity, optics, and sourcing checks.
Jul 10, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $0.4300 | $10.75 |
| 100+ | $0.4140 | $41.40 |
| 3000+ | $0.3900 | $1170.00 |
In Stock · 24h Response · Worldwide Shipping
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.”