MCP618-I/P - 190kHz CMOS Op Amp | Microchip Technology
MPN: MCP618-I/P ✓ Hoạt độngMCP618-I/P Tóm tắt
An operational amplifier, or op amp, is a voltage-controlled differential amplifier whose open-loop gain is used to amplify small signals. The MCP618 belongs to the broader hierarchy of analog amplifier ICs, analog signal-chain ICs, and semiconductor devices. Its low operating current and low-voltage operation distinguish it from higher-current conventional bipolar op amps, while its rail-to-rail output supports systems whose usable signal range approaches the supply rails.
Key features include a 190 kHz gain-bandwidth product, an offset voltage below 150 uV, and a typical operating current of 19 uA according to the Microchip product page. The MCP618 uses advanced CMOS technology to provide low bias current, high open-loop gain, and high-speed operation. Its 0.08 V/us slew rate is sufficient for low-frequency instrumentation, buffering, and general analog conditioning rather than high-speed signal processing.
The chip-select feature identified for the MCP618 distinguishes it from the otherwise similar single MCP616 and dual MCP617. Chip select can place the amplifier into a low-power state when it is not needed, which is valuable in multiplexed, portable, and duty-cycled systems. The related MCP617 is a dual device and the MCP619 is a quad device, so their package pinouts should not be treated as drop-in equivalents for the single MCP618-I/P.
Typical uses include battery-powered sensing, industrial process-control interfaces, loop-powered instrumentation, low-power data acquisition, portable test equipment, and low-end audio circuits. The 2.3 V minimum supply allows operation from a 3 V rail, while the 5.5 V maximum provides compatibility with conventional 5 V analog systems. Its 19 uA typical operating current is particularly attractive when average power consumption dominates the design.
Designers should account for the relatively modest 190 kHz bandwidth and 0.08 V/us slew rate when driving capacitive loads or processing high-frequency waveforms. Stable feedback-network values and conservative output loading are preferable to aggressive gain or bandwidth settings. The manufacturer datasheet should also be consulted for the complete electrical limits, input common-mode behavior, output swing, noise, bias current, and exact PDIP pin assignment before layout is released.
This page consolidates verified manufacturer and distributor information, distinguishes the MCP618 from adjacent family members, and provides application-specific engineering guidance. It also separates directly compatible options from merely related MCP616, MCP617, and MCP619 devices so engineers can avoid treating shared specifications or family membership as proof of pin compatibility.
Bộ thay thế dễ dàng lắp đặt cho MCP618-I/P — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
MCP618-E/P
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MCP618-I/P Tỷ lệ tối đa & tính chất điện
| Amplifier Type | General-purpose operational amplifier |
| Number of Circuits | 1 circuit |
| Technology | CMOS |
| Supply Voltage Range | 2.3 V to 5.5 V |
| Gain-Bandwidth Product | 190 kHz |
| Slew Rate | 0.08 V/us |
| Typical Operating Current | 19 uA |
| Offset Voltage | Less than 150 uV |
| Output Swing | Rail-to-rail |
| Input Type | Rail-to-rail input |
| Hộp | 8-pin PDIP, 0.300 inch, 7.62 mm |
| Kiểu lắp đặt | Through-hole |
| Nhiệt độ hoạt động | -40 C to +85 C |
| Chip Select | Yes |
Hướng dẫn cấu hình chân MCP618-I/P 8-pin pdip, 0.300 inch, 7.62 mm
Cấu hình chân cho MCP618-I/P (8-pin pdip, 0.300 inch, 7.62 mm gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho MCP618-I/P.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
MCP618-I/P phù hợp cho 6 Áp dụngs: Battery-Powered Sensor Conditioning, Industrial Process Measurement, Loop-Powered Instrumentation, Portable Test and Measurement, Low-End Audio Signal Path, Low-Power Data Acquisition.
Battery-Powered Sensor Conditioning
The MCP618-I/P fits battery-powered sensor interfaces because it operates from 2.3 V to 5.5 V and has a low 19 uA typical operating current. It can amplify a low-level transducer signal while the chip-select function disables the amplifier between measurement intervals. The 190 kHz gain-bandwidth product is appropriate for many temperature, pressure, and slow-motion sensors, but the designer should maintain feedback stability and verify the input common-mode range. Using a duty-cycled shutdown sequence can reduce average consumption, although the exact quiescent current in the disabled state is [DATA_NEEDED].
Được đề xuất
Industrial Process Measurement
The MCP618-I/P is suitable for buffering and amplifying low-frequency process signals when the design requires low power and operation from a 2.3 V to 5.5 V supply. Its 190 kHz gain-bandwidth product and 0.08 V/us slew rate can handle many slow sensor and control signals, while rail-to-rail output operation supports limited headroom at low supply voltages. Industrial designs must still check the exact input common-mode range, output swing under load, electrical noise, and stability. The 8-pin PDIP package also supports through-hole prototypes and serviceable industrial assemblies.
Được đề xuất
Loop-Powered Instrumentation
The MCP618-I/P can serve as the input amplifier in loop-powered instrumentation because the manufacturer identifies battery-powered and loop-powered applications and specifies 19 uA typical operating current. Its low-voltage operation permits use from a 2.3 V minimum supply, while the chip-select function supports systems that periodically enable the amplifier. Signal bandwidth must remain well within the 190 kHz gain-bandwidth product, and output settling should be checked for the selected feedback network. Exact input bias current, input offset current, and noise are [DATA_NEEDED] for high-impedance sensor calculations.
Được đề xuất
Portable Test and Measurement
The MCP618-I/P is appropriate for portable measurement equipment where a general-purpose amplifier must operate from a 2.3 V to 5.5 V source without consuming substantial current. It can provide gain, filtering, and impedance buffering for low-frequency probes or sensor interfaces, while chip select can reduce consumption when a measurement channel is inactive. Its 190 kHz gain-bandwidth product and 0.08 V/us slew rate are appropriate for many general-purpose measurements, but not for demanding high-speed scope front ends. Full-scale accuracy also depends on offset drift, bias current, and noise, which are not present in the verified excerpts.
Được đề xuất
Low-End Audio Signal Path
The MCP618-I/P can be used in low-end audio signal paths as the Microchip product page identifies low-end audio among its intended applications. Rail-to-rail output operation provides useful swing from low-voltage supplies, and the 2.3 V to 5.5 V range supports compact portable equipment. The 190 kHz gain-bandwidth product is adequate for many voice-band and basic audio tasks but not high-fidelity wideband designs. Audio engineers should evaluate output distortion, noise, load drive, and stability with the actual coupling network because those detailed limits are not included in the supplied verified excerpts.
Được đề xuất
Low-Power Data Acquisition
The MCP618-I/P can condition one low-bandwidth data-acquisition channel while consuming 19 uA typical operating current. Its single-amplifier architecture and chip-select input allow it to be enabled when required, and the 190 kHz gain-bandwidth product is generally sufficient for slowly changing sensor and instrumentation signals. Selection should account for input offset below 150 uV, input bias current, and noise, since only the offset summary was provided in the verified data. The device is not a substitute for a wideband PGA or a high-speed ADC driver, but it is useful for low-rate, low-power acquisition front ends.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MCP618-I/P — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MCP618-E/P |
|---|---|---|
| Package | 8-pin PDIP | 8-pin PDIP - same |
| Brand | Microchip Technology | Microchip Technology |
| Number of Amplifiers | 1 circuit | 1 circuit |
Bảo phân biệt quan trọng
- Chip-select support distinguishes the MCP618 from the related MCP616 (vsMCP616)
- Single-amplifier architecture avoids the channel count and pinout changes of the dual family option (vsMCP617)
- Lower-voltage operation than conventional 5 V-only general-purpose op amps (vsGeneral 5 V-only op amps)
Ghi chú thiết kế
Budget the MCP618-I/P against the complete analog signal path, not just the nominal 19 uA operating current. The verified data does not provide the chip-select shutdown current, so measure or obtain that specification before calculating duty-cycled battery life. Place the input, feedback, output, and bypass components close to the 8-pin PDIP, and route supply return current without sharing noisy paths with the sensed signal.
Do not confuse the MCP618 with the MCP616, MCP617, or MCP619 solely because they are related low-power CMOS amplifiers. The MCP618 is a single amplifier with chip select; MCP617 and MCP619 have different channel counts and package configurations. Confirm that the selected replacement retains the same 8-pin PDIP pinout and chip-select polarity. Also avoid choosing a higher-bandwidth SOIC alternative as a drop-in part because the physical package differs.
Keep the closed-loop bandwidth well below the 190 kHz gain-bandwidth product and evaluate phase margin with the actual feedback and load values. The 0.08 V/us slew rate limits large-signal response even when small-signal gain appears suitable. Where driving appreciable capacitance, verify capacitive-load stability and output-swing limits from the manufacturer datasheet, then add isolation or filtering if ringing appears.
Thông tin tuân thủ
The supplied verified search results do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than being inferred from the manufacturer or package.
