MCP603-I/ST - 2.8MHz Low-Power R-R Op Amp | Microchip Technology
N.º da peça: MCP603-I/ST ✓ AtivoMCP603-I/ST Visão geral
An operational amplifier, or op amp, is a high-gain differential amplifier used to amplify, buffer, filter, or compare analog signals. The MCP603 belongs to the CMOS operational amplifier family and ultimately to the broader analog signal-conditioning and semiconductor hierarchy. Its rail-to-rail output allows the output voltage to approach the positive and negative supply limits, while its low input bias current supports high-impedance sensor and measurement circuits.
The MCP603 combines a 2.8 MHz typical gain-bandwidth product with a 2.3 V/µs typical slew rate. Its low quiescent current makes it suitable for portable, battery-powered, and continuously powered equipment. Unity-gain stability supports direct voltage-following use, while the chip-select feature allows a system controller to place the amplifier in a low-power state when the signal path is not required.
Microchip describes the device as a single amplifier with chip select, low bias current, high-speed operation, high open-loop gain, and rail-to-rail output swing. These characteristics support general-purpose analog conditioning without the higher supply current and larger package requirements of some high-speed amplifiers. The 8-TSSOP format also supports compact PCB layouts, although the exposed package dimensions and lead pitch must be considered during assembly.
Typical uses include sensor-signal conditioning, low-frequency filtering, voltage buffering, current-to-voltage conversion, and precision control loops. The part is also suitable for portable instrumentation, industrial monitoring, battery-powered measurement systems, and embedded analog interfaces. Its 2.7 V minimum supply operation is particularly useful for systems powered from a single low-voltage rail.
Designers should account for the amplifier's 2.8 MHz bandwidth and 2.3 V/µs slew rate when setting gain-bandwidth and large-signal requirements. Input and output stability, capacitive-load behavior, chip-select logic levels, and decoupling must be evaluated against the manufacturer datasheet. PCB layout should keep the feedback path short and provide a low-impedance supply return to reduce noise and instability risk.
This product page consolidates the verified Microchip and distributor information, distinguishes true package-compatible alternatives from unavailable substitutes, and adds practical application and design guidance for engineers evaluating the MCP603-I/ST.
Alternativas drop-in para MCP603-I/ST — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Nenhuma alternativa drop-in disponível para este produto.
Solicitar alternativasMCP603-I/ST Classificações máximas e características elétricas
| Amplifier Type | General-purpose operational amplifier |
| Number of Channels | 1 channel |
| Minimum Operating Supply Voltage | 2.7 V |
| Maximum Operating Supply Voltage | 5.5 V |
| Single-Supply Operation | Up to 6.0 V |
| Gain-Bandwidth Product | 2.8 MHz typical |
| Slew Rate | 2.3 V/µs typical |
| Corrente de repouso | Less than 325 µA typical |
| Unity-Gain Stability | Yes |
| Output Swing | Rail-to-rail |
| Input Common-Mode Range | Includes ground |
| Shutdown Control | Chip select |
| Faixa de temperatura de operação | -40°C to +85°C |
| Encapsulamento | 8-TSSOP, 0.173 inch (4.40 mm) width |
| Tipo de montagem | Surface mount |
| Packaging | Tube |
| AEC-Q100 Classification | AEC-Q100 indicated by verified distributor listing |
Guia de Configuração de Pinos do MCP603-I/ST 8-tssop, 0.173 inch (4.40 mm) width
Configuração de pinos para MCP603-I/ST (pacote 8-tssop, 0.173 inch (4.40 mm) width). 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 MCP603-I/ST.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
MCP603-I/ST é adequado para 6 aplicaçãos: Portable Sensor Signal Conditioning, Battery-Powered Measurement Systems, Industrial Process Monitoring, Low-Power Data Acquisition, Active Filtering and Signal Conditioning, Low-Voltage Control and Interface Circuits.
Portable Sensor Signal Conditioning
The MCP603-I/ST fits low-power sensor interfaces because it operates from 2.7 V to 5.5 V while drawing less than 325 µA typical quiescent current. Its low input bias current preserves the integrity of high-impedance sensor signals, and the rail-to-rail output provides more usable output range than a fixed-rail implementation on a 3.3 V supply. Designers can place the amplifier between a resistive bridge or resistive sensor and an ADC input. Chip select can disable the amplifier during inactive sampling intervals, although total current must also account for sensor and ADC leakage.
Recomendado
Battery-Powered Measurement Systems
The MCP603-I/ST supports battery-powered measurement systems by combining a 2.7 V minimum supply with less than 325 µA typical quiescent current. At 5.5 V, the single amplifier can process common low-voltage sensor signals without a dual supply, while rail-to-rail output helps the system approach the available signal range. It is useful for handheld meters, environmental monitors, and portable diagnostic instruments. Chip select provides a controlled shutdown path, but battery-life calculations should include load current, leakage, and the duration for which the analog front end remains enabled.
Recomendado
Industrial Process Monitoring
The MCP603-I/ST is applicable to industrial process-monitoring circuits that operate from a regulated low-voltage rail and require dependable operation over -40°C to +85°C. Its 2.8 MHz typical gain-bandwidth product is suitable for low-frequency instrumentation signals, and the 2.3 V/µs typical slew rate supports faster small-signal transitions. The amplifier can buffer a conditioned transducer output or drive the input of a higher-resolution converter. Designers should still check noise, offset, common-mode range, and capacitive loading against the complete signal chain rather than relying on bandwidth alone.
Recomendado
Low-Power Data Acquisition
The MCP603-I/ST can serve as the analog buffer immediately preceding a low-resolution or medium-resolution ADC in a compact data-acquisition system. Its rail-to-rail output gives the converter input a wider usable swing, while unity-gain stability permits straightforward voltage-following configuration. The amplifier’s low quiescent current is valuable in distributed or portable acquisition nodes that operate for long periods from limited power budgets. For higher-speed channels, engineers should compare the 2.8 MHz gain-bandwidth product and 2.3 V/µs slew rate against the required settling time and ADC acquisition window.
Recomendado
Active Filtering and Signal Conditioning
The MCP603-I/ST is well suited to active low-pass filtering and general signal-conditioning stages because it combines a 2.8 MHz typical gain-bandwidth product with a 2.3 V/µs typical slew rate. Its unity-gain stability supports inverting, non-inverting, and follower configurations when component selection remains within the recommended operating region. The low quiescent current benefits continuously powered monitoring systems, and chip select can reduce power when a filter is not being sampled. Component tolerances and the amplifier’s finite gain-bandwidth response determine the achievable filter accuracy.
Recomendado
Low-Voltage Control and Interface Circuits
The MCP603-I/ST can be used in low-voltage control loops, comparator interfaces, and analog output drivers where rail-to-rail output is valuable. Operating from 2.7 V allows deployment in 3.3 V control systems, while chip select lets a microcontroller or system controller reduce amplifier activity during inactive periods. Its high open-loop gain supports accurate closed-loop amplification, but stability with capacitive loads must be checked using the manufacturer guidance. The 8-TSSOP package supports compact layouts, although careful TSSOP routing and decoupling are needed to minimize noise and maintain reliable operation.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MCP603-I/ST — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto |
|---|---|
| Brand | Microchip Technology |
| Package | 8-TSSOP (0.173 inch / 4.40 mm width) |
| Number of Channels | 1 channel |
| Minimum Supply Voltage | 2.7 V |
| Maximum Supply Voltage | 5.5 V |
| Gain-Bandwidth Product | 2.8 MHz typical |
| Slew Rate | 2.3 V/µs typical |
| Quiescent Current | Less than 325 µA typical |
| Output Swing | Rail-to-rail |
| Operating Temperature | -40°C to +85°C |
Principais diferenciais
- Low-power operation with controllable shutdown (vs MCP603-I/SN)
- Compact 8-TSSOP implementation (vs MCP603-I/P)
- Single-supply rail-to-rail analog operation (vs MCP603T-I/ST)
Notas de projeto
Place the manufacturer-recommended supply bypass capacitor immediately adjacent to the positive supply and ground pins. Route the ground connection into the ground plane with a short, low-impedance path rather than through an unprotected signal trace. Keep the resistor network, feedback capacitor, and amplifier pins in a compact group so that parasitic capacitance does not degrade the usable stability or transient response.
Do not assume that a rail-to-rail output amplifier can drive every capacitive load. The MCP603-I/ST has a 2.3 V/µs typical slew rate and a 2.8 MHz typical gain-bandwidth product, so excessive output capacitance or very high closed-loop gain can cause peaking or oscillation. Check the manufacturer capacitive-load guidance and isolate long cables with an appropriate resistor when driving ADC inputs, multiplexers, or remote modules.
Use the chip-select function to reduce system power when the amplified signal is not required, but confirm the control-logic thresholds and shutdown current in the manufacturer datasheet. At 2.7 V supply, verify that the selected digital control signal reaches a valid high or low level. Shutdown timing should also be coordinated with ADC sampling so the amplifier is enabled and settled before the conversion window.
Keep the MCP603-I/ST feedback path short and avoid routing it beneath or beside high-speed switching nodes. The 2.8 MHz typical gain-bandwidth product makes the device useful for low-frequency precision conditioning, but board-level coupling and ground return paths can still dominate noise performance. A solid ground plane, controlled switching-current paths, and separation from digital and power-converter nodes help preserve the low-power signal quality expected from the device.
Informações de conformidade
A verified distributor listing describes MCP603-I/ST as automotive AEC-Q100, while the verified industrial-temperature suffix specifies -40°C to +85°C. RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations were not present in the supplied data and are therefore recorded as unknown.
