MCP603-I/ST - 2.8MHz Low-Power R-R Op Amp | Microchip Technology
부품 번호: MCP603-I/ST ✓ 활성MCP603-I/ST 개요
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.
드롭인 대체품: MCP603-I/ST — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 제품에는 사용 가능한 드롭인 대체품이 없습니다.
대체품 요청MCP603-I/ST 최대 정격 & 전기적 특성
| 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 |
| 대기 전류 | Less than 325 µA typical |
| Unity-Gain Stability | Yes |
| Output Swing | Rail-to-rail |
| Input Common-Mode Range | Includes ground |
| Shutdown Control | Chip select |
| 동작 온도 범위 | -40°C to +85°C |
| 패키지 | 8-TSSOP, 0.173 inch (4.40 mm) width |
| 실장 유형 | Surface mount |
| Packaging | Tube |
| AEC-Q100 Classification | AEC-Q100 indicated by verified distributor listing |
MCP603-I/ST 8-tssop, 0.173 inch (4.40 mm) width 핀 구성 가이드
MCP603-I/ST(8-tssop, 0.173 inch (4.40 mm) width 패키지)의 핀 구성입니다. 이 아날로그 부품에는 입력, 출력, 전원 공급 핀이 있습니다. 오프셋 널, 보상, 인에이블 핀 구성은 제조사 데이터시트를 참조하십시오. 신호 컨디셔닝 및 증폭기 회로에 이상적입니다.
다음에 대한 상세 핀아웃 데이터 없음: MCP603-I/ST.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
MCP603-I/ST 적합 용도: 6 애플리케이션s: 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.
추천
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.
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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.
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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.
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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.
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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.
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추천 제품 요약
엔지니어링 참조 데이터: MCP603-I/ST — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 |
|---|---|
| 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 |
주요 차별점
- 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)
설계 노트
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.
규정 준수 정보
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.
