MCP631-E/SN - 24MHz Low-Power R-R Op Amp | Microchip
N.º da peça: MCP631-E/SN ✓ AtivoMCP631-E/SN Visão geral
An operational amplifier, or op amp, is a high-gain analog building block that compares two input voltages and drives its output according to their difference. Within the signal-chain hierarchy, the MCP631 belongs to the CMOS operational-amplifier family and supports general-purpose amplifier, buffer, and voltage-feedback applications. Its rail-to-rail output allows the output to approach the supply limits more closely than a conventional fixed-output amplifier, improving usable signal range in low-voltage systems.
The MCP631 combines a 24 MHz typical gain-bandwidth product with a 10 V/us typical slew rate, making it responsive enough for low-to-moderate-frequency filtering, buffering, and gain stages. Its typical input noise density is 10 nV/Hz at 1 MHz, while common-mode rejection reaches 78 dB. The device also features low input bias current of 0.0050 uA and is manufactured using Microchip's CMOS process for low-cost, low-power, and high-speed operation.
The amplifier uses a CMOS process and provides a single amplifier in an 8-pin SOIC outline. Because its performance is specified for low-voltage operation, designers should maintain adequate input and output common-mode range at the selected supply voltage. The typical 70 mA short-circuit current indicates a useful drive capability for moderate capacitive loads, although stability and transient behavior must be evaluated for each external load and feedback network.
Typical uses include low-voltage sensor conditioning, portable instrumentation, buffered analog signals, active filtering, and general signal conditioning. The MCP631-E/SN is especially suitable when a design needs more bandwidth than a micropower amplifier but does not require the drive current of a power operational amplifier. Its -40 C to +125 C rating also supports industrial temperature-range requirements.
For stable operation, follow the feedback and compensation guidance in the manufacturer datasheet, place input and output decoupling capacitors close to the device, and verify stability with the intended source impedance and capacitive loading. Do not assume that rail-to-rail output eliminates output-current or common-mode limitations near the supply rails.
This product page combines the manufacturer electrical characteristics with practical selection criteria, package details, comparison points, and design guidance. It highlights where the MCP631-E/SN fits within low-voltage amplifier designs and clarifies the distinctions among verified same-family drop-in options.
Alternativas drop-in para MCP631-E/SN — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
MCP631-I/SN
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MCP631T-E/SN
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MCP633-E/SN
✅ Drop-In ⚠️ Especificações não verificadasConsulte o preço
Ver ficha técnica →MCP634-E/SN
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MCP631-E/ML
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MCP631-E/SN Classificações máximas e características elétricas
| Amplifier Type | Single rail-to-rail operational amplifier |
| Gain-Bandwidth Product | 24 MHz typical |
| Slew Rate | 10 V/us typical |
| Common-Mode Rejection Ratio | 78 dB |
| Input Bias Current | 0.0050 uA |
| Input Noise Density | 10 nV/Hz typical at 1 MHz |
| Output Short-Circuit Current | 70 mA typical |
| Faixa de temperatura de operação | -40 C to +125 C |
| Package Type | 8-pin SOIC, 2 mm x 3 mm body, 0.75 mm height |
| Tipo de montagem | Surface mount |
| Process Technology | CMOS |
| Number of Circuits | 1 circuit |
| Output Topology | Rail-to-rail output |
| Automotive Qualification | AEC-Q100 listed |
Guia de Configuração de Pinos do MCP631-E/SN 8-pin soic, 2 mm x 3 mm body, 0.75 mm height
Configuração de pinos para MCP631-E/SN (pacote 8-pin soic, 2 mm x 3 mm body, 0.75 mm height). Este componente analógico possui pinos de entrada, saída e alimentação. Consulte o datasheet do fabricante para configurações de offset null, compensação e pino de enable. Ideal para circuitos de condicionamento de sinal e amplificadores.
Nenhum dado detalhado de pinagem disponível para MCP631-E/SN.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
MCP631-E/SN é adequado para 6 aplicaçãos: Low-Voltage Sensor Signal Conditioning, Portable Measurement and Instrumentation, Active Filtering and Signal Shaping, Buffered ADC and DAC Interfaces, Industrial Control and Monitoring, Low-Voltage Audio and Communication Buffers.
Low-Voltage Sensor Signal Conditioning
The MCP631-E/SN fits sensor-conditioning stages that operate from a 2.5 V supply and need more signal bandwidth than a micropower amplifier can provide. Its 24 MHz typical gain-bandwidth product supports responsive gain and filter stages, while the 10 V/us typical slew rate helps preserve larger-amplitude transitions. The 78 dB common-mode rejection ratio can reduce corruption from common-mode sensor noise. Place the amplifier close to the sensor or ADC input, use short feedback paths, and check the input offset and bias-current limits against the sensor impedance before fixing the gain.
Recomendado
Portable Measurement and Instrumentation
The MCP631-E/SN is appropriate for portable instrumentation that combines a 2.5 V supply with relatively fast analog signal paths. Its 24 MHz typical gain-bandwidth product provides useful closed-loop bandwidth for moderate-frequency measurements, and rail-to-rail output can increase headroom within a restricted voltage range. The 10 nV/Hz typical input noise density at 1 MHz supports low-level signal work. For battery-powered instruments, verify total quiescent current in the operating mode and account for the amplifier’s supply current in the power budget.
Recomendado
Active Filtering and Signal Shaping
The MCP631-E/SN can implement active filters and waveform-shaping networks in low-voltage systems where higher op-amp bandwidth improves phase margin. Its 24 MHz typical gain-bandwidth product and 10 V/us typical slew rate are useful when the filter operates substantially above the audio band. Select feedback components according to the desired response, keep the loop board short, and confirm the selected gain and load against the manufacturer stability guidance. The rail-to-rail output helps retain more of the available signal range, although output-current limits must be checked.
Recomendado
Buffered ADC and DAC Interfaces
The MCP631-E/SN can serve as a low-voltage buffer between a sensor or converter and the input of another mixed-signal device. Its 24 MHz typical gain-bandwidth product and low 0.0050 uA typical input bias current reduce disturbance of high-impedance sources, while the 10 V/us typical slew rate supports faster transitions. The amplifier should be placed adjacent to the protected input to minimize capacitive loading and trace pickup. Verify settling behavior, output drive, and stability against the ADC or DAC sampling network before production use.
Recomendado
Industrial Control and Monitoring
The MCP631-E/SN is suitable for industrial monitoring circuits requiring a -40 C to +125 C operating range, a 2.5 V minimum supply, and a compact SOIC footprint. Its 78 dB typical common-mode rejection ratio helps preserve low-level signals in electrically noisy environments, while the 24 MHz typical gain-bandwidth product supports moderate-bandwidth control loops. Use solid grounding and local supply bypassing, and avoid routing the input beside switching nodes. Thermal qualification of the complete board remains necessary for industrial deployment.
Recomendado
Low-Voltage Audio and Communication Buffers
The MCP631-E/SN can buffer low-level analog signals in portable audio or communication equipment when the supply is close to 2.5 V. Rail-to-rail output increases the usable signal range, and the 10 V/us typical slew rate is useful for signals that exceed slow micropower-amplifier capability. The 10 nV/Hz typical input noise density at 1 MHz provides a useful starting point for low-noise front ends. Confirm that the output can drive the intended load and that the selected feedback network remains stable at the actual channel impedance and frequency.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MCP631-E/SN — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MCP631-I/SN | MCP631T-E/SN | MCP633-E/SN | MCP634-E/SN | MCP631-E/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC |
| Number of Amplifiers | 1 | 1 | 1 | 1 | 1 | 1 |
| Gain-Bandwidth Product | 24 MHz typical | 24 MHz typical | 24 MHz typical | 24 MHz typical | 24 MHz typical | 24 MHz typical |
| Slew Rate | 10 V/us typical | 10 V/us typical | 10 V/us typical | 10 V/us typical | 10 V/us typical | 10 V/us typical |
| Minimum Supply Voltage | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
| Common-Mode Rejection Ratio | 78 dB | 78 dB | 78 dB | 78 dB | 78 dB | 78 dB |
| Output Short-Circuit Current | 70 mA typical | 70 mA typical | 70 mA typical | 70 mA typical | 70 mA typical | 70 mA typical |
| Output Type | Rail-to-rail | Rail-to-rail | Rail-to-rail | Rail-to-rail | Rail-to-rail | Rail-to-rail |
| Special Control Feature | None indicated | None indicated | None indicated | Chip Select | Shutdown | None indicated |
Principais diferenciais
- Provides the same 24 MHz typical gain-bandwidth product as the MCP631 suffix variants (vs MCP631-I/SN)
- Adds a Chip Select function while preserving the family bandwidth (vs MCP633-E/SN)
- Supports an extended -40 C to +125 C operating range (vs MCP631-I/SN)
Notas de projeto
Do not treat rail-to-rail output as unlimited output swing or drive. The manufacturer specifies 70 mA typical short-circuit current, while the usable voltage range and bandwidth depend on load and output frequency. Keep loads within the intended application, use the data-sheet output-current limits, and verify settling before driving an ADC, DAC, or downstream buffer.
Place supply-decoupling capacitors close to the power and ground pins, and keep the feedback loop compact to avoid added phase shift. Connect the input source through a short trace and return the ground current directly to the device ground. At 24 MHz typical gain-bandwidth product, board parasitics and copper return paths can influence high-frequency behavior even in an SOIC package.
Check stability with the actual source impedance and load capacitance. The MCP631-E/SN has a 10 V/us typical slew rate, so a capacitive load can demand current during fast transitions and interact with the feedback network. Use the manufacturer stability and capacitive-load guidance, and add an isolating resistor or buffer when driving large capacitive loads.
The MCP631-E/SN is an analog amplifier rather than a power semiconductor, so a safe operating area chart does not apply. Thermal review should instead focus on package dissipation, copper area, ambient temperature, and nearby heat sources. The rated -40 C to +125 C operating range describes device qualification, not an unlimited PCB-temperature capability.
Informações de conformidade
The MCP631-E/SN listing identifies AEC-Q100 automotive qualification. Other environmental and material compliance statuses are not stated in the available technical information.
