MCP6141-I/P - 600 nA Low-Power Rail-to-Rail Op Amp | Microchip
Teilenummer: MCP6141-I/P ✓ AktivMCP6141-I/P Übersicht
An operational amplifier is a voltage-gain building block used to amplify, buffer, filter, compare, or drive analog signals. Within the semiconductor hierarchy, the MCP6141 is a precision analog IC, specifically a low-power rail-to-rail operational amplifier. Its low quiescent current makes it especially useful in battery-powered equipment where every microampere affects available operating time, while rail-to-rail input and output operation improves usable signal range in low-voltage systems.
The amplifier's rail-to-rail input range extends from -0.3 V minimum to VDD plus 0.3 V maximum. This allows signals near either supply rail to be processed more effectively than with conventional input stages that require additional headroom. Its 600 nA typical quiescent current and 1 microampere maximum rating minimize standby consumption, and the 100 kHz typical gain-bandwidth product supports low-frequency signal conditioning rather than demanding high-speed waveform processing.
The MCP6141 is non-unity-gain stable and is intended for gains of 10 V/V or higher. Its typical slew rate is 24,000 V per microsecond, while common-mode rejection is listed at 80 dB. These characteristics make it appropriate for precision current sensing, low-level signal amplification, sensor interfaces, and battery-operated instrumentation where input range and power efficiency matter more than wideband performance.
Typical uses include medical monitoring, industrial sensor acquisition, portable instrumentation, battery-powered detection, low-current feedback loops, and general-purpose analog signal conditioning. The 1.4 V minimum supply supports energy-efficient systems that cannot provide a conventional 3.3 V or 5 V rail, while the 5.5 V maximum rating accommodates common low-voltage supply systems.
Design with the MCP6141-I/P using stable input and output compensation networks appropriate to the selected gain and load. Check capacitive loading, output-current demand, input common-mode range, and noise-sensitive layout before deployment. Because the gain-bandwidth product is only 100 kHz typical, applications requiring high closed-loop bandwidth should use higher-bandwidth amplifiers instead.
This page combines manufacturer specifications, package and pinout information, application guidance, design notes, and strict drop-in replacement analysis for the MCP6141-I/P. The replacement assessment distinguishes electrically similar devices from genuinely pin-compatible 8-pin PDIP alternatives, helping engineers avoid changes that require PCB modifications.
Drop-in-Alternativen für MCP6141-I/P – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Für dieses Produkt sind keine Drop-in-Alternativen verfügbar.
Alternativen anfordernMCP6141-I/P Grenzwerte & elektrische Eigenschaften
| Number of Amplifiers | 1 circuit |
| Amplifier Type | Single operational amplifier |
| Supply Voltage Range | 1.4 V to 5.5 V |
| Quiescent Current per Amplifier | 600 nA typical |
| Maximum Quiescent Current per Amplifier | 1 uA maximum |
| Gain-Bandwidth Product | 100 kHz typical |
| Minimum Stable Gain | 10 V/V |
| Input Common-Mode Range | -0.3 V minimum to VDD + 0.3 V maximum |
| Output Swing | Rail-to-rail |
| Slew Rate | 24,000 V/us |
| Common-Mode Rejection Ratio | 80 dB |
| Input Bias Current | 0.0050 uA |
| Betriebstemperaturbereich | -40 C to +125 C |
| Gehäuse | 8-pin PDIP |
| Montageart | Through-hole |
MCP6141-I/P Pin-Konfiguration
| Pin 1 | NC — Not connected (per manufacturer datasheet) |
| Pin 2 | IN- — Inverting input |
| Pin 3 | IN+ — Non-inverting input |
| Pin 4 | V- — Negative supply or ground connection |
| Pin 5 | NC — Not connected (per manufacturer datasheet) |
| Pin 6 | OUT — Amplifier output |
| Pin 7 | V+ — Positive supply connection |
| Pin 8 | NC — Not connected (per manufacturer datasheet) |
Typische Anwendungen
MCP6141-I/P ist geeignet für 6 Anwendungs: Battery-Powered Sensor Conditioning, Portable Medical Monitoring, Industrial Current Sensing, Low-Power Voltage Buffering, IoT Sensor Acquisition, Portable Test and Measurement.
Battery-Powered Sensor Conditioning
The MCP6141-I/P is suitable for amplifying weak sensor signals in battery-powered equipment because its 600 nA typical quiescent current limits amplifier overhead. The 1.4 V to 5.5 V operating range supports low-voltage sensing systems, while the -0.3 V to VDD plus 0.3 V input range helps preserve signal headroom. Its 100 kHz typical gain-bandwidth product is appropriate for temperature, pressure, and slowly changing resistance measurements rather than high-frequency waveform capture. Use a gain of at least 10 V/V for stable operation and include sensor current, resistor leakage, and filter losses in the complete power budget.
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Portable Medical Monitoring
The MCP6141-I/P can serve as a low-power amplifier in portable medical monitoring circuits where continuous operation and low supply demand are essential. Its 600 nA typical quiescent current reduces the amplifier's contribution to total battery consumption, and the single-amplifier configuration simplifies designs requiring one buffered measurement channel. The 80 dB listed common-mode rejection ratio can help reject common-mode noise when the input is close to the measurement signal level. Designers must still validate patient-safety, diagnostic accuracy, leakage, and applicable regulatory requirements for the complete product.
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Industrial Current Sensing
The MCP6141-I/P can amplify the low differential voltage produced by a shunt in a low-power industrial current-measurement circuit. The rail-to-rail input capability accommodates operation close to the supply rails, while the typical 24,000 V/us slew rate supports relatively slow current changes without requiring a high-bandwidth amplifier. Its non-unity-gain-stable architecture is intended for gains of 10 V/V or higher, which suits many shunt configurations. Layout should minimize parasitic voltage offsets and keep high-current shunt paths away from the amplifier input and feedback nodes.
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Low-Power Voltage Buffering
The MCP6141-I/P is appropriate for buffering a high-impedance voltage source when the load changes slowly and standby current is important. Rail-to-rail input and output behavior gives designers useful signal range in compact low-voltage systems, and the 1.4 V minimum supply supports reduced-energy operation. The 100 kHz typical gain-bandwidth product is sufficient for many voltage references, dividers, and slow sensor outputs, but not for demanding capacitive loads. Configure the device as a voltage follower, verify the source impedance, and test the intended load capacitance before finalizing the layout.
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IoT Sensor Acquisition
The MCP6141-I/P fits IoT sensor-acquisition blocks that must operate from a small energy budget and a low supply voltage. Its 600 nA typical quiescent current is negligible beside many wireless sensor nodes, while rail-to-rail inputs help process divider or transducer signals over much of the available voltage range. The amplifier's 100 kHz typical gain-bandwidth product suits filtered environmental measurements that change over seconds or minutes. Select a stable gain of at least 10 V/V, limit bandwidth to the sensor's useful signal rate, and account for the node's radio activity and sensor standby current in the overall power budget.
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Portable Test and Measurement
The MCP6141-I/P can serve as a low-current front-end amplifier in portable instrumentation that measures slow voltages with limited battery capacity. Its single-amplifier architecture, rail-to-rail operation, and 1.4 V to 5.5 V supply range allow compact analog conditioning beside a low-power controller. The typical 100 kHz gain-bandwidth product is suitable for DC and low-frequency measurements, while the listed 80 dB common-mode rejection ratio can improve performance when the input is small. For precision results, check offset, noise, input bias current, leakage, resistor tolerance, and the accuracy of the reference used by the measurement chain.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für MCP6141-I/P – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt |
|---|---|
| Brand | Microchip Technology |
| Package | 8-pin PDIP |
| Number of Amplifiers | 1 circuit |
| Supply Voltage Range | 1.4 V to 5.5 V |
| Typical Quiescent Current | 600 nA per amplifier |
| Maximum Quiescent Current | 1 uA per amplifier |
| Gain-Bandwidth Product | 100 kHz typical |
| Minimum Stable Gain | 10 V/V |
| Input Common-Mode Range | -0.3 V minimum to VDD + 0.3 V maximum |
| Slew Rate | 24,000 V/us |
| Common-Mode Rejection Ratio | 80 dB |
| Operating Temperature Range | -40 C to +125 C |
Designhinweise
Use a closed-loop gain of at least 10 V/V for the MCP6141-I/P because the device is specified as non-unity-gain stable. Lower-gain operation can introduce instability or unexpected ringing, particularly with source impedance, output capacitance, or additional feedback poles. Confirm the final gain and loading on a prototype using an oscilloscope, and review the manufacturer datasheet 20001668E for the recommended compensation approach.
Place the amplifier, feedback components, and input or output bypass capacitors close together to minimize parasitic feedback and supply noise. Keep high-impedance input and feedback tracks short, and route them away from switching nodes and shunt-current paths. A solid ground reference is particularly important because the device is intended for very low-current systems where trace leakage and ground offsets can become comparable to the measured signal.
Estimated: at a 3.3 V supply and 100 kHz typical gain-bandwidth product, the amplifier's static current is approximately 0.6 uA using the 600 nA typical quiescent-current value. This excludes feedback-divider current, load current, input bias current, and external sensor current. Verify those contributions separately because they can dominate the amplifier's own 600 nA consumption in a precision low-power design.
The 100 kHz typical gain-bandwidth product makes closed-loop bandwidth dependent on the selected noise gain. Account for the gain-bandwidth relationship when estimating usable bandwidth, and do not expect the high slew-rate figure to create high small-signal bandwidth. Use filtering for out-of-band noise and verify output settling for the required measurement accuracy.
Compliance-Informationen
The manufacturer product page and manufacturer datasheet were used for technical specifications, but no explicit compliance declarations were identified. Confirm current RoHS, REACH, lead-free, halogen-free, conflict-minerals, and automotive qualification documentation with Microchip Technology for the exact MCP6141-I/P ordering code.