MCP6231-E/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP6231-E/SN is a single-channel 1.8V operational amplifier with 200 kHz gain-bandwidth, 75 dB CMRR, and 1.1 nA bias current in an 8-pin SOIC package. RoHS compliant with worldwide availability.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP6231-E/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.0920(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
- Ultra-low 1.1 nA maximum input bias current minimizes offset errors in high-impedance sensor signal conditioning circuits
- 1.8V single-supply operation with 200 kHz gain-bandwidth product suits battery-powered and IoT sensor designs
- 75 dB typical CMRR and internal frequency compensation in a compact 8-pin SOIC-8 package for noise-sensitive applications
Applications
The MCP6231-E/SN is well suited for battery-powered portable instruments, wearable sensors, and IoT node designs that require low-power analog signal amplification from a 1.8V supply. Its ultra-low 1.1 nA bias current and 75 dB CMRR make it ideal for high-impedance transducer conditioning, precision comparator stages, and active filter circuits in medical and consumer electronics.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.0011 µA |
| Common-mode Reject Ratio-Min | 61dB |
| Common-mode Reject Ratio-Nom | 75dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 7000 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 | 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 |
| Slew Rate-Nom | 0.15V/us |
| Supply Current-Max | 0.03mA |
| 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 | 1.27mm |
| Terminal Position | DUAL |
| Unity Gain BW-Nom | 300 |
| Voltage Gain-Min | 31620 |
| 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 | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP6231-E/SN:
suggested
suggested
suggested
suggested
suggested
1.8V, 200kHz single low-cost, CMOS Op Amplifier on 120K Analog ROM process.
1.8V, 200kHz single low-cost, CMOS Op Amplifier on 120K Analog ROM process.
Frequently Asked Questions
How does the 200 kHz gain-bandwidth of MCP6231-E/SN affect its use in audio or sensor signal chains?
At 200 kHz gain-bandwidth product, the MCP6231-E/SN is suited for low-frequency sensor amplification and signal conditioning up to a few tens of kilohertz at unity or moderate gain. For audio bandwidth up to 20 kHz with gain of 10, usable bandwidth is around 20 kHz, making it appropriate for sensor rather than full-bandwidth audio applications.
What supply voltage flexibility does MCP6231-E/SN offer for portable and IoT designs?
The MCP6231-E/SN operates from a 1.8V single supply, which directly interfaces with modern low-voltage MCU analog frontends and battery cells without additional level shifting. Its low bias current of 1.1 nA maximum further reduces power consumption in always-on sensing applications.
For a high-impedance pH or electrochemical sensor interface, why is the 1.1 nA bias current of MCP6231-E/SN important?
High-impedance sensors can produce significant offset voltage errors when op-amp bias current flows through source impedances in the megaohm range. The MCP6231-E/SN's 1.1 nA maximum bias current limits this voltage error to sub-microvolt levels even with 1 MΩ source impedance, preserving measurement accuracy.
How does the 8-pin SOIC-8 package of MCP6231-E/SN compare to SOT-23 alternatives in terms of PCB integration?
SOIC-8 provides a standard 1.27mm pitch layout that is easier to hand-solder and inspect than the 0.95mm pitch of SOT-23-5 packages. While SOT-23-5 saves board space, the SOIC-8 of MCP6231-E/SN suits prototype-friendly boards and volume production with standard pick-and-place tooling at 6-week lead time.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.0920 | $0.09 |
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