MCP609-I/ST - Quad 155 kHz Low-Power CMOS Op Amp | Microchip
MPN: MCP609-I/ST ✓ Hoạt độngMCP609-I/ST Tóm tắt
An operational amplifier, or op amp, is a high-gain differential amplifier used to amplify and buffer analog signals. The MCP609 belongs to the CMOS operational amplifier category, where low bias current, low supply current, and rail-to-rail output capability make the device useful when a system must process signals close to the limits of its supply voltage. It sits within the broader signal-chain and analog-amplification hierarchy used for sensor conditioning, filtering, and low-voltage instrumentation.
The four-amplifier configuration allows one MCP609 package to implement several independent analog functions. Key advantages include a 155 kHz gain-bandwidth product, less than 250 uV typical offset voltage stated by the manufacturer, 18.7 uA typical operating current, and rail-to-rail output swing. Low input bias current is particularly useful when the source impedance is high, while the low operating current limits power consumption in battery-operated equipment.
Microchip describes the MCP609 as a micropower CMOS op amp built with advanced CMOS technology. Its low bias current, high open-loop gain, and speed are suitable for general-purpose low-voltage analog signal conditioning. Unity-gain stability supports buffer, amplifier, and feedback-network implementations without the compensation changes normally required by some low-power op amps. Four independent amplifiers can also provide consistent channels for multi-sensor systems.
Typical uses include portable sensor interfaces, low-voltage data acquisition, battery-powered monitors, analog filters, and embedded instrumentation. The 14-pin TSSOP package is suitable for compact surface-mount PCB layouts. In a sensor-conditioning circuit, each amplifier can buffer a high-impedance source before conversion or comparison. For low-frequency active filtering, the 155 kHz gain-bandwidth product provides bandwidth beyond the signal band of many slow sensor systems.
The main design consideration is power headroom. Rail-to-rail output swing does not guarantee that the input common-mode range reaches both supply rails, so the signal and feedback voltages must be checked against the manufacturer specifications. Input and output stability also depends on suitable source impedance, output loading, and decoupling. The manufacturer datasheet and typical application information should be used to confirm those operating limits before production release.
This page consolidates manufacturer specifications, distributor pricing, verified replacement information, and practical design guidance. It distinguishes confirmed drop-in compatibility from unavailable alternatives and highlights the MCP609-I/ST's combination of four amplifiers, 155 kHz bandwidth, 18.7 uA typical current, low offset voltage, and 14-pin TSSOP packaging.
Bộ thay thế dễ dàng lắp đặt cho MCP609-I/ST — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
MCP609T-I/ST
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MCP609-I/ST Tỷ lệ tối đa & tính chất điện
| Amplifier Type | Quad CMOS operational amplifier |
| Number of Channels | 4 channels |
| Gain-Bandwidth Product | 155 kHz |
| Typical Operating Current | 18.7 uA |
| Typical Input Offset Voltage | Less than 250 uV |
| Maximum Input Offset Voltage | 250 uV |
| Supply Voltage Range | 2.5 V to 5.5 V |
| Output Swing | Rail-to-rail |
| Input Bias Current | 80 pA maximum at +85 degrees C |
| Gain Configuration | Unity-gain stable |
| Technology | CMOS |
| Hộp | 14-pin TSSOP |
| Package Width | 4.40 mm |
| Package Length | 0.173 inch |
| Kiểu lắp đặt | Surface mount |
Hướng dẫn cấu hình chân MCP609-I/ST 0.173 inch
Cấu hình chân cho MCP609-I/ST (0.173 inch 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 MCP609-I/ST.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
MCP609-I/ST phù hợp cho 6 Áp dụngs: Battery-Powered Sensor Conditioning, Portable Medical Monitoring, Industrial Data Acquisition, Low-Voltage Active Filtering, Smart Home Sensor Interfaces, Low-Voltage Audio and Control Signals.
Battery-Powered Sensor Conditioning
The MCP609-I/ST fits battery-powered sensor conditioning because it combines four amplifiers with a typical operating current of 18.7 uA in a 2.5 V to 5.5 V single-supply range. Each channel can buffer a sensor output before it reaches a higher-impedance ADC or comparator, reducing loading without requiring four separate packages. Rail-to-rail output swing also helps use more of a restricted battery-derived voltage range. The design trade-off is bandwidth: the 155 kHz gain-bandwidth product is suitable for many slow sensor signals but not high-frequency waveform conditioning. Confirm the input common-mode range, output-load limits, and bias behavior for the selected sensor before fixing the gain and filter values.
Được đề xuất
Portable Medical Monitoring
The MCP609-I/ST can support low-level analog stages in portable medical-monitoring equipment where supply current and package size are important constraints. Its four channels allow sequential or parallel handling of sensor, reference, and filtering functions, while the 155 kHz gain-bandwidth product covers many low-frequency physiological signals. A 2.5 V minimum supply allows operation from compact power systems, and rail-to-rail output swing improves usable signal range. Engineers must still verify medical qualification requirements, noise performance, patient-protection isolation, and input safety independently. The part should be treated as a general-purpose analog building block rather than as an automatically approved medical component.
Được đề xuất
Industrial Data Acquisition
The MCP609-I/ST is suitable for compact industrial data-acquisition modules that condition several low-voltage analog channels. Four unity-gain-stable amplifiers can buffer sensor lines, implement active filters, or provide gain stages close to the ADC to reduce sensitivity to board-level noise. Its 18.7 uA typical operating current limits the amplifier contribution to system power, and the 14-pin TSSOP package supports conventional surface-mount assembly. The 155 kHz bandwidth accommodates many temperature, pressure, and position signals, although engineers must compare the required settling time and accuracy with the actual measurement bandwidth. Input protection, isolation, and industrial temperature requirements should be evaluated separately because they are not established by the supplied excerpts.
Được đề xuất
Low-Voltage Active Filtering
The MCP609-I/ST can implement low-frequency active filters in compact analog front ends because each amplifier is unity-gain stable and the family provides a 155 kHz gain-bandwidth product. A 2.5 V to 5.5 V supply allows the same filter approach to operate from low-voltage sensors or portable instruments, while four channels support cascaded or parallel filter stages. With an offset voltage below 250 uV typical and low operating current of 18.7 uA, the device is useful where DC accuracy and power matter. Component tolerances and the op amp's finite gain and bandwidth still determine filter accuracy, so simulation and worst-case tolerance analysis remain necessary.
Được đề xuất
Smart Home Sensor Interfaces
The MCP609-I/ST fits smart-home sensor interfaces that convert low-level analog sensor outputs into a voltage suitable for sampling or thresholding. Four channels in one 14-pin TSSOP package can reduce board area in nodes containing several environmental or motion-related inputs. The low 18.7 uA typical operating current is valuable in power-constrained nodes, and the 2.5 V minimum supply permits use with low-voltage sensor rails. Rail-to-rail output swing can improve use of the available signal range. Before deployment, verify the input bias current against source impedance, confirm common-mode limits for each sensor, and provide filtering or protection at externally accessible inputs.
Được đề xuất
Low-Voltage Audio and Control Signals
The MCP609-I/ST can amplify low-level control signals in portable audio-adjacent or system-control electronics where a low-noise, low-power analog stage is needed. Its four channels allow multiple small-signal paths to be handled in one package, and rail-to-rail output swing supports low-voltage operation close to the supply limit. The 155 kHz gain-bandwidth product is appropriate for low-frequency control and audio-baseband signals rather than high-fidelity wideband audio designs. Rail-to-rail output capability alone does not guarantee low output distortion, so the complete load, frequency, and output-swing data must be reviewed in the manufacturer datasheet before using the amplifier in an audible signal path.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MCP609-I/ST — 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 | MCP609T-I/ST |
|---|---|---|
| Package | 14-pin TSSOP | 14-pin TSSOP |
| Brand | Microchip Technology | Microchip Technology |
| Amplifier Configuration | Quad | Quad |
| Gain-Bandwidth Product | 155 kHz | 155 kHz |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| Maximum Input Offset Voltage | 250 uV | 250 uV |
| Output Swing | Rail-to-rail | Rail-to-rail |
| Technology | CMOS | CMOS |
| Mounting Type | Surface mount | Surface mount |
Bảo phân biệt quan trọng
- Four amplifiers in one low-power package (vsMCP609T-I/ST)
- Low-voltage operation with rail-to-rail output (vsMCP609T-I/ST)
- Bandwidth appropriate for low-frequency conditioning (vsMCP609T-I/ST)
Ghi chú thiết kế
Do not equate rail-to-rail output swing with a fully rail-to-rail input common-mode range. The MCP609-I/ST can approach its supply rails at the output, but the allowable input voltage must be checked against the complete datasheet limits for the operating supply. A sensor that swings near 0 V or the positive rail can therefore require attenuation, biasing, or a different amplifier even when the 2.5 V to 5.5 V supply itself is valid.
Keep each amplifier's input and feedback paths short, provide a solid ground return, and place supply-decoupling capacitance close to the device. Sensitive sensor wiring should be kept away from switching nodes and high-current return paths. Because the MCP609 is designed for low bias current, verify that leakage from PCB contamination, connectors, or adjacent biased inputs does not overwhelm the source impedance; unusually high source impedances may require guarding or a lower-leakage input network.
Budget the amplifier's supply current and the resulting junction temperature at the lowest input voltage, where the available voltage headroom is smallest. The family is specified at a typical operating current of 18.7 uA, but production limits and temperature behavior must be taken from the manufacturer data. Four active channels consume more current than one, so enable or power-gating stages when the system can remain partly inactive, and verify the selected 14-pin TSSOP package temperature grade against the enclosure's worst-case ambient temperature.
Thông tin tuân thủ
The supplied search results confirm the MCP609 family and package but do not provide extractable RoHS, REACH, lead-free, halogen-free, or conflict-minerals statements. AEC-Q100 is not applicable to this general-purpose operational amplifier.
