MCP601-I/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP601-I/ST is a single rail-to-rail output operational amplifier from Microchip operating from 2.7 V with an ultra-low bias current of 60 fA and a minimum CMRR of 75 dB. It features voltage-feedback architecture with internal frequency compensation in an 8-lead TSSOP package. Available from stock worldwide.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP601-I/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4300(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low input bias current of 60 fA maximum enables accurate signal conditioning of high-impedance sensor outputs
- Rail-to-rail output swing maximizes dynamic range on low single-supply voltages down to 2.7 V
- Minimum 75 dB CMRR (typically 90 dB) rejects common-mode interference in noise-sensitive measurement circuits
- Internally frequency-compensated voltage-feedback architecture eliminates external compensation components
Applications
The MCP601-I/ST is used in portable and battery-powered measurement instruments to amplify low-level signals from high-impedance sensors such as pH probes, photodiodes, and piezoelectric transducers, where its 60 fA bias current minimizes loading errors. It is well suited for single-supply active filter stages and precision signal-conditioning circuits in industrial sensor modules operating from 2.7 V to 6 V. Medical monitoring devices and data acquisition front-ends also leverage its 90 dB typical CMRR and rail-to-rail output to achieve clean signal amplification with minimal distortion.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TSSOP-8 |
| 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-G8 |
| JESD-609 Code | e3 |
| Low-Bias | YES |
| Low-Offset | NO |
| Micropower | YES |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.25 |
| Package Shape | RECTANGULAR |
| 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 |
| 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 | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Unity Gain BW-Nom | 2800 |
| Voltage Gain-Min | 56200 |
| Wideband | NO |
| ## MCP601-I/ST 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 | Malaysia, Philippines, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP601-I/ST:
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Frequently Asked Questions
How low is the input bias current of the MCP601-I/ST and which sensor types benefit most from this specification?
The MCP601-I/ST has a maximum average input bias current of just 0.00006 µA (60 fA), making it ideal for high-impedance sensors such as pH electrodes, ISFET sensors, and piezoelectric transducers where even picoampere-level bias currents would cause measurable voltage errors across the source impedance.
What is the CMRR performance of the MCP601-I/ST and how does it benefit low-level differential signal amplification?
The MCP601-I/ST achieves a minimum CMRR of 75 dB and a typical CMRR of 90 dB, which means common-mode interference on a 2.7 V supply is attenuated by a factor of at least 5600:1; this level of rejection is sufficient for amplifying millivolt-level differential signals from bridge sensors and thermocouples in electrically noisy industrial environments.
For a single 3.3 V supply rail, how does the MCP601-I/ST maximize the usable output voltage range?
With its rail-to-rail output stage, the MCP601-I/ST swings to within a few millivolts of both GND and 3.3 V, providing nearly the full 3.3 V dynamic range for driving ADC inputs; this is especially important for 12-bit or 16-bit ADCs where losing even 100 mV of headroom reduces effective resolution by roughly half a bit.
When should a designer choose the MCP601-I/ST over a dual or quad op-amp package for a compact sensor node design?
A designer should choose the MCP601-I/ST in single-channel sensor nodes where one amplifier stage per acquisition path is needed and the TSSOP-8 package's approximately 3 mm x 4.4 mm footprint is a better fit than a dual or quad package that would occupy more area than necessary, particularly when independent power gating or channel isolation is required per path.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5700 | $0.57 |
| 25+ | $0.4700 | $11.75 |
| 100+ | $0.4300 | $43.00 |
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