MCP6044-E/P - 600nA Quad Rail-to-Rail Op Amp | Microchip
부품 번호: MCP6044-E/P ✓ 활성MCP6044-E/P 개요
An operational amplifier, or op amp, is a voltage-controlled differential amplifier that uses external feedback to set its closed-loop gain. The MCP6044 belongs to the low-power amplifier hierarchy of CMOS operational amplifiers, where rail-to-rail input and output capability allows operation close to the supply rails. This makes it useful in low-frequency instrumentation, sensor conditioning, portable equipment, and battery-powered systems.
Key features include four amplifier circuits in one package, rail-to-rail input and output operation, a 14 kHz typical gain-bandwidth product, a 600 nA typical operating current, and offset voltage below 3 mV. The MCP6044 family also provides unity-gain stability, low bias current, high open-loop gain, and operation from a 1.4 V single supply, allowing one amplifier family to cover low-voltage and energy-conscious designs.
Microchip's advanced CMOS process supports the MCP6044's low-power bias and rail-to-rail behavior. Its 0.003 V/µs typical slew rate and 14 kHz gain-bandwidth product are appropriate for low-frequency signal paths rather than high-speed waveform or communications applications. A 14-pin PDIP package also supports through-hole assembly, manual prototyping, educational circuits, and industrial control systems where surface-mount assembly is unnecessary.
Typical uses include low-frequency sensor signal conditioning, industrial process-control loops, portable measurement equipment, battery-operated instruments, wearable electronics, and general-purpose analog buffering. Four independent channels can reduce component count and board area when a system requires multiple low-power analog functions.
Designers should verify input and output common-mode limits over the complete supply range, provide stable feedback networks for unity-gain operation, and place input, output, and decoupling connections to minimize noise pickup. The 600 nA figure is typical rather than a guaranteed maximum, so the worst-case specification should be used when sizing a long-duration battery application.
드롭인 대체품: MCP6044-E/P — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: MCP6044-E/P (동일 폼 팩터 및 풋프린트) — 차이점: Package, Mounting Type, Amplifier Type, Gain-Bandwidth Product, Input Offset Voltage.
이 제품에는 사용 가능한 드롭인 대체품이 없습니다.
대체품 요청MCP6044-E/P 최대 정격 & 전기적 특성
| Number of Amplifier Circuits | 4 circuits |
| Amplifier Type | General-purpose operational amplifier |
| Gain-Bandwidth Product | 14 kHz typical |
| Operating Current | 600 nA typical per amplifier |
| Input Offset Voltage | Less than 3 mV typical |
| Minimum Single-Supply Voltage | 1.4 V |
| Maximum Supply Voltage | 6 V |
| Slew Rate | 0.003 V/µs |
| Input Common-Mode Range | Rail-to-rail input |
| Output Swing | Rail-to-rail output |
| Gain Configuration | Unity-gain stable |
| Process Technology | Advanced CMOS |
| 패키지 | 14-PDIP (0.300 inch, 7.62 mm) |
| 핀 수 | 14 pins |
| 실장 유형 | Through-hole |
| Packaging | Tube |
MCP6044-E/P 핀 구성
| 핀 1 | OUT1 — Amplifier 1 output |
| 핀 2 | IN1- — Amplifier 1 inverting input |
| 핀 3 | IN1+ — Amplifier 1 non-inverting input |
| 핀 4 | V+ — Positive supply voltage |
| 핀 5 | IN2+ — Amplifier 2 non-inverting input |
| 핀 6 | IN2- — Amplifier 2 inverting input |
| 핀 7 | OUT2 — Amplifier 2 output |
| 핀 8 | OUT3 — Amplifier 3 output |
| 핀 9 | IN3- — Amplifier 3 inverting input |
| 핀 10 | IN3+ — Amplifier 3 non-inverting input |
| 핀 11 | V- — Negative supply or ground for single-supply operation |
| 핀 12 | IN4+ — Amplifier 4 non-inverting input |
| 핀 13 | IN4- — Amplifier 4 inverting input |
| 핀 14 | OUT4 — Amplifier 4 output |
일반적인 애플리케이션
MCP6044-E/P 적합 용도: 6 애플리케이션s: Industrial Process-Control Loops, Battery-Powered Sensor Conditioning, Portable Measurement Equipment, Wearable and Low-Energy Electronics, Low-Frequency Audio and Control Interfaces, General-Purpose Analog Buffering.
Industrial Process-Control Loops
The MCP6044-E/P fits low-frequency process-control loops where four current or voltage signals must be amplified without a high-speed op amp. Its 14 kHz typical gain-bandwidth product is sufficient for many slowly changing sensor signals, while the 600 nA typical operating current per amplifier limits power demand in distributed measurement systems. The four channels can condition separate sensors, amplify error signals, and drive downstream converters. Rail-to-rail input and output operation is particularly useful at low supply voltages because it preserves usable signal range near the rails. Engineers should still verify the common-mode range at the actual supply voltage, use stable feedback networks, and include input filtering when field-coupled noise is present.
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Battery-Powered Sensor Conditioning
The MCP6044-E/P is appropriate for battery-powered sensor conditioning because its single-supply operation starts at 1.4 V and its typical operating current is 600 nA per amplifier. Four channels can amplify temperature, pressure, or resistive-sensor outputs without requiring four separate packages, reducing board area. Rail-to-rail input capability helps maximize the available sensor swing in low-voltage systems, while rail-to-rail output allows the conditioned signal to approach the supply limits. Because 600 nA is a typical value rather than a maximum, long-life products should calculate energy use from the worst-case datasheet current and include load and pull-up currents in the complete system budget.
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Portable Measurement Equipment
The MCP6044-E/P is suitable for portable measurement instruments that combine several low-frequency analog channels within limited power and space budgets. Its four amplifiers can handle buffer, gain, level-shift, or reference-buffer functions around an analog measurement section. The 14 kHz typical gain-bandwidth product supports slow sensor and instrument signals without the supply noise and switching activity associated with a higher-speed amplifier. Rail-to-rail input and output operation improves signal utilization in a 1.4 V-to-6 V system, and the 600 nA typical operating current per channel reduces amplifier contribution to battery drain. Input protection and leakage should be checked separately because the very-low-current architecture leaves less margin for excessive input bias loading.
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Wearable and Low-Energy Electronics
The MCP6044-E/P can support wearable and other low-energy electronics when the design uses low-frequency physiological, environmental, or resistive sensing signals. Its 600 nA typical operating current per amplifier is central to the power budget, while four integrated channels reduce component count compared with separate single amplifiers. Rail-to-rail input and output behavior provides additional signal range at low supply voltages, and the 14 kHz typical gain-bandwidth product is appropriate for many slowly varying signals. The through-hole PDIP package may be less compact than an SOT-23 option, so wearable products commonly require a board redesign or a different package variant rather than direct substitution of MCP6044-E/P.
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Low-Frequency Audio and Control Interfaces
The MCP6044-E/P is suitable for low-frequency audio and control interfaces that do not require wide bandwidth or very low distortion specifications. Its four channels can support audio preamplification, control-voltage buffering, and cross-coupled analog functions in compact embedded equipment. Rail-to-rail input and output operation allows direct coupling to low-amplitude signals when the supply is constrained. The 14 kHz typical gain-bandwidth product limits the device to audio-band and control-loop tasks rather than high-fidelity, wideband audio paths. Designers should evaluate slew rate, output-loading behavior, and noise against the required bandwidth, and should add filtering where switching regulators or digital signals couple into the analog input.
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General-Purpose Analog Buffering
The MCP6044-E/P works well as a general-purpose analog buffer because it is unity-gain stable and provides four independent amplifier channels in one package. Buffers can isolate high-impedance sensors, prevent loading between circuit stages, and support voltage-level conditioning in educational and industrial control boards. The 14 kHz typical gain-bandwidth product accommodates low-frequency control and measurement signals, while the 0.003 V/µs typical slew rate provides a concrete basis for evaluating large-signal settling time. Rail-to-rail output operation improves dynamic range in low-voltage systems. For precision instrumentation, check the offset and bias-current limits in the manufacturer datasheet, provide clean grounding, and avoid capacitive loads that can destabilize the amplifier.
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추천 제품 요약
엔지니어링 참조 데이터: MCP6044-E/P — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 |
|---|---|
| Package | 14-PDIP (0.300 inch, 7.62 mm) |
| Brand | Microchip Technology |
| Number of Amplifier Circuits | 4 circuits |
| Gain-Bandwidth Product | 14 kHz typical |
| Operating Current | 600 nA typical per amplifier |
| Input Offset Voltage | Less than 3 mV |
| Supply Voltage Range | 1.4 V to 6 V |
| Slew Rate | 0.003 V/µs |
| Input and Output Operation | Rail-to-rail input and output |
| Gain Configuration | Unity-gain stable |
주요 차별점
- Four low-power channels in one through-hole package (vs MCP6041-E/SL)
- Low-voltage operation preserves usable signal range (vs MCP6043)
- Through-hole package supports accessible assembly and prototyping (vs MCP6044T-I/SL)
설계 노트
Calculate the complete power budget from the actual four-channel supply current rather than the 600 nA typical operating current alone. The verified data identifies 600 nA as a typical value, so it is suitable for an initial estimate but not for a guaranteed battery-life calculation. Add the quiescent current of the complete circuit, including feedback networks, ADC input leakage, pull resistors, and any regulator inefficiency. Validate the design against the worst-case operating current in the manufacturer datasheet and across the intended temperature range.
Keep each amplifier's input and feedback components close to their associated pins, and route sensitive input traces away from switching nodes, inductors, and high-current return paths. Place supply bypass capacitance near the V+ and V- pins, with a short ground return to reduce inductance. Because the MCP6044-E/P can operate from 1.4 V and provides rail-to-rail behavior, careful grounding and decoupling are essential for preserving low-level signal accuracy near the supply rails.
Do not treat the rail-to-rail description as permission to exceed the input common-mode or output-swing limits under every load condition. Check those limits for the actual supply voltage and output load in the manufacturer datasheet. Also use unity-gain-stable feedback values when the amplifier operates at a gain of one, and avoid driving large capacitive loads unless the application note confirms stability. Incorrect assumptions about common-mode range or capacitive loading can cause saturation or oscillation.
The 14 kHz typical gain-bandwidth product and 0.003 V/µs typical slew rate make the MCP6044-E/P appropriate for low-frequency signals rather than wideband or high-slew-rate tasks. Check the required closed-loop gain against both limits before choosing an inverting topology. If a low-frequency signal contains significant harmonics, the closed-loop bandwidth and output-slew requirements may exceed what this amplifier can deliver cleanly.
규정 준수 정보
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