MCP6041-I/P - 600nA Low-Power Rail-to-Rail Op Amp | Microchip
MPN: MCP6041-I/P ✓ ActiveMCP6041-I/P Overview
An operational amplifier, or op amp, is a high-gain analog building block that compares two input voltages and amplifies their difference. The MCP6041 belongs to the CMOS operational-amplifier hierarchy, combining low-dropout linear amplification with rail-to-rail signal handling. Its low quiescent current and single-supply operation make it particularly useful in battery-powered and portable systems where every microamp of standing current can affect useful runtime.
The MCP6041 provides rail-to-rail input and rail-to-rail output operation, allowing signals close to either supply rail to be measured and delivered. Its typical gain-bandwidth product is 14 kHz, providing ample bandwidth for slow sensor signals, instrumentation, filtering, and low-frequency signal conditioning. The typical offset voltage is less than 3 mV, while the quoted CMRR is 80 dB and the slew rate is 0.003 V/µs.
Microchip’s advanced CMOS implementation supports low bias current, high open-loop gain, and low power consumption. The MCP6041 family draws less than 1 µA maximum quiescent current per amplifier, with 600 nA typical operation. Although the 14 kHz bandwidth and 0.003 V/µs slew rate do not target high-speed signal processing, the device provides predictable operation for low-frequency analog systems where current consumption is more important than rapid slew performance.
Typical applications include battery-powered sensing, portable instrumentation, biomedical signal-conditioning interfaces, low-current data acquisition, sensor buffering, and precision analog filtering. It can also serve as an input or output buffer in systems powered from a single low-voltage cell. Designers should account for its relatively limited bandwidth when closing loops at high frequencies or requiring fast settling.
The primary design consideration is operating headroom. Rail-to-rail input and output improve usable signal range, but the output still cannot exactly reach the supply rails. Input and output stability must be verified with the selected feedback topology, source impedance, load, and external capacitance using the manufacturer datasheet and typical application circuits.
This product page consolidates verified manufacturer specifications, distributor pricing references, package details, and application guidance. It also distinguishes true same-footprint drop-in options from parts with different packages or materially different bandwidth, providing a practical basis for design selection without treating merely similar amplifiers as direct replacements.
Drop-in alternatives for MCP6041-I/P — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MCP6041-I/P (same form factor and footprint) — differing in Input Bias Current, Maximum Quiescent Current, Package, RoHS Status, Slew Rate.
MCP6041-E/P
✅ Drop-In ⚠️ Specs UnverifiedContact for price
View Datasheet →MCP6041-I/P Maximum Ratings & Electrical Characteristics
| Amplifier Type | Single operational amplifier |
| Supply Voltage Range | 1.4 V to 6.0 V |
| Quiescent Current | 600 nA typical per amplifier |
| Maximum Quiescent Current | Less than 1 µA per amplifier |
| Gain-Bandwidth Product | 14 kHz typical |
| Input Offset Voltage | Less than 3 mV typical |
| Input Common-Mode Range | Rail-to-rail |
| Output Swing | Rail-to-rail |
| Common-Mode Rejection Ratio | 80 dB |
| Slew Rate | 0.003 V/µs |
| Input Bias Current | 0.0050 µA |
| Operating Temperature Range | -40 °C to +125 °C |
| Package | 8-PDIP |
| Number of Circuits | 1 |
| Technology | CMOS |
| Mounting Type | Through-hole |
| RoHS Status | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | unknown |
MCP6041-I/P Pin Configuration
| Pin 1 | NC — Not connected; verify the exact package drawing in the manufacturer datasheet. |
| Pin 2 | IN- — Inverting input. |
| Pin 3 | IN+ — Non-inverting input. |
| Pin 4 | V- — Negative supply connection. |
| Pin 5 | NC — Not connected; verify the exact package drawing in the manufacturer datasheet. |
| Pin 6 | OUT — Analog output. |
| Pin 7 | V+ — Positive supply connection. |
| Pin 8 | NC — Not connected; verify the exact package drawing in the manufacturer datasheet. |
Typical Applications
MCP6041-I/P is suitable for 6 applications: Battery-Powered Sensor Conditioning, Portable Medical Signal Conditioning, Low-Power Data Acquisition, Portable Instrumentation, Precision Low-Frequency Filtering, Industrial Sensor Interface.
Battery-Powered Sensor Conditioning
The MCP6041-I/P fits low-voltage sensor interfaces because it operates from a single supply as low as 1.4 V, draws 600 nA typical quiescent current, and accepts and produces rail-to-rail signals. It can buffer a sensor output or amplify a small differential measurement before an ADC input. The 14 kHz gain-bandwidth product is suitable for slow-changing physical quantities, while the less-than-3 mV typical offset helps preserve small-signal accuracy. Designers should verify sensor output impedance, noise requirements, and the maximum signal bandwidth rather than assuming the op amp can replace an application-specific low-noise amplifier.
Portable Medical Signal Conditioning
The MCP6041-I/P is appropriate for portable biomedical monitoring when low power and a single low-voltage supply are priorities. Its 600 nA typical quiescent current limits standby drain, while rail-to-rail input and output operation helps retain signal range in compact battery-powered systems. The 14 kHz bandwidth can accommodate many low-frequency physiological signals, and the less-than-3 mV typical input offset is useful near the measurement floor. Actual medical suitability still depends on the complete signal chain, noise, safety isolation, leakage, and applicable medical-device validation.
Low-Power Data Acquisition
The MCP6041-I/P can serve as the input amplifier or unity-gain buffer in a compact, low-speed data-acquisition system. Rail-to-rail input operation accommodates signals referenced close to ground or the positive supply, while the 80 dB quoted CMRR helps reject common-mode noise in sensor wiring. Its 14 kHz gain-bandwidth product and 0.003 V/µs slew rate suit slowly sampled measurements rather than high-speed waveform capture. Select external anti-alias filtering and verify ADC input range, settling requirements, and source impedance to ensure the complete acquisition path behaves correctly.
Portable Instrumentation
The MCP6041-I/P supports handheld and field instrumentation where a multi-rail instrument would otherwise add power and complexity. A single supply from 1.4 V to 6.0 V simplifies power architecture, and the typical 600 nA quiescent current reduces the fixed load on a battery. Rail-to-rail output capability can drive a moderate input stage or sensing network without requiring a second negative supply. Because its bandwidth is only 14 kHz typical, it is best suited to temperature, pressure, level, and other slow measurements rather than wideband instrumentation signals.
Precision Low-Frequency Filtering
The MCP6041-I/P is useful in active filters and low-frequency analog signal-conditioning networks where low standing current is more important than high slew rate. Its CMOS architecture, 600 nA typical quiescent current, and rail-to-rail input/output behavior support compact battery-operated circuits. The 14 kHz gain-bandwidth product leaves bandwidth for moderate-gain filter sections, while the less-than-3 mV typical offset can influence the achievable DC accuracy. Component tolerances, capacitor selection, common-mode range, and filter stability should be evaluated together during design.
Industrial Sensor Interface
The MCP6041-I/P can condition slowly varying industrial sensor outputs when the design operates from a single low-voltage rail. Its 80 dB CMRR is useful for rejecting common-mode pickup on longer sensor connections, while rail-to-rail input operation provides improved signal range. The less-than-3 mV typical offset and 14 kHz bandwidth fit many temperature, pressure, and position measurements. The industrial temperature designation should not be treated as a blanket compliance claim; verify the exact suffix rating, noise behavior, surge protection, isolation requirements, and factory calibration strategy.
Engineering reference data for MCP6041-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MCP6041-E/P |
|---|---|---|
| Package | 8-PDIP | 8-PDIP |
| Brand | Microchip Technology | Microchip Technology |
| Amplifier Configuration | Single amplifier | Single amplifier |
| Supply Voltage Range | 1.4 V to 6.0 V | 1.4 V to 6.0 V |
| Typical Quiescent Current | 600 nA per amplifier | 600 nA per amplifier |
| Gain-Bandwidth Product | 14 kHz typical | 14 kHz typical |
| Typical Input Offset Voltage | Less than 3 mV | Less than 3 mV |
| Input and Output Swing | Rail-to-rail | Rail-to-rail |
| Common-Mode Rejection Ratio | 80 dB | 80 dB |
| Slew Rate | 0.003 V/µs | 0.003 V/µs |
| Temperature-Grade Suffix | -I/P | -E/P |
Key Differentiators
- Very low typical operating current (vs MCP6041-E/P)
- Single-supply rail-to-rail signal handling (vs MCP6041-E/P)
- 14 kHz bandwidth matched to slow analog signals (vs MCP6041-E/P)
Design Notes
Budget the MCP6041-I/P’s specified operating current carefully in a battery design: the typical quiescent current is 600 nA and the family maximum is less than 1 µA per amplifier. Add sensor bias current, ADC leakage, load current, and regulator quiescent current to obtain the real standby drain. This is especially important because a rail-to-rail amplifier’s low operating current does not eliminate power consumed by the surrounding signal chain.
Do not substitute a rail-to-rail input/output designation for an exact pin-function match. Before reusing a board, confirm pin 2 as the inverting input, pin 3 as the non-inverting input, pin 4 as the negative supply, pin 6 as the output, and pin 7 as the positive supply against the manufacturer package drawing. Also verify the -I/P temperature-grade requirements, because a same-footprint suffix with a different grade may not satisfy the original environmental specification.
Keep the op-amp input and feedback traces short, use a low-impedance ground reference, and place input-referred filtering close to the relevant pin. Because the MCP6041 is optimized for very low current rather than high bandwidth, avoid adding large parasitic capacitance across the output without checking stability in the intended feedback network. The manufacturer datasheet’s typical application information should guide the final passive values and decoupling layout.
Compliance Information
The supplied verified sources do not explicitly provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for MCP6041-I/P. The operating-temperature suffix is not treated as proof of automotive qualification.
