MCP609-I/SL - Quad Micropower CMOS Op Amp | Microchip
MPN： MCP609-I/SL ✓ 啟用中MCP609-I/SL 概覽
An operational amplifier is a voltage-controlled differential amplifier whose gain, filtering, impedance conversion, and buffering behavior depend on feedback. The MCP609 belongs to the micropower CMOS operational-amplifier hierarchy, combining low quiescent consumption with the rail-to-rail output characteristics required by battery-powered and single-supply systems. Its four independent channels can implement multiple analog functions on one board while reducing package count and simplifying procurement.
The principal benefits of the MCP609-I/SL are its 155 kHz gain-bandwidth product, low 18.7 uA typical operating current, less-than-250 uV offset voltage, low input bias current, and rail-to-rail output swing. These characteristics support low-power sensor conditioning, buffering, and gain stages where the signal bandwidth is modest but power efficiency and output-range utilization are important. The 14-pin SOIC package also supports conventional surface-mount assembly and thermal performance better than a comparably dense exposed-pad package.
Microchip’s advanced CMOS process supports the MCP609’s low-power operation, high open-loop gain, and rail-to-rail output behavior. Each amplifier can operate from the same single supply and is optimized for general-purpose low-voltage analog designs. The 155 kHz gain-bandwidth product is sufficient for low-frequency conditioning rather than high-speed signal processing, so stable feedback-network design and conservative loop-gain margins remain important when driving capacitive loads.
Typical applications include portable sensor interfaces, low-power data-acquisition front ends, medical monitoring signal conditioning, industrial transducer amplification, audio preamplifier stages, and embedded control-system analog channels. The quad configuration is especially useful when four related low-frequency signals must be conditioned close to the sensor or converter rather than through separate amplifiers.
Designers should verify the signal frequency, output load, stability, input common-mode range, and system noise budget against the manufacturer datasheet. Decoupling capacitors should be placed close to the supply pins, and unused amplifier channels should be configured in a stable state rather than left floating. When replacing a pin-compatible device, check voltage rating, slew rate, input bias current, output capability, and package pinout in addition to bandwidth.
This product data combines verified manufacturer and distributor information with application guidance, drop-in alternatives, package details, and engineering design notes. It is intended to accelerate component selection while keeping every unverified technical parameter explicitly identified rather than inferred.
直接替換替代品，適用於 MCP609-I/SL — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
MCP609T-I/SL
✅ 直接替換📋 參考替代品（不在目錄中）
MCP609-I/CL
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MCP609T-I/CL
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MCP609-E/SL
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MCP609-V/SL
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MCP609-I/SL 最大額定值與電氣特性
| Amplifier Type | Quad operational amplifier |
| Number of Channels | 4 channels |
| Gain-Bandwidth Product | 155 kHz |
| Typical Operating Current | 18.7 uA |
| Input Offset Voltage | <250 uV |
| Supply Voltage Range | 2.5 V to 5.5 V |
| Maximum Supply Voltage | 6.0 V |
| Output Swing | Rail-to-rail |
| 封裝 | 14-pin SOIC |
| 安裝類型 | Surface mount |
MCP609-I/SL 14-pin soic 腳位配置指南
MCP609-I/SL（14-pin soic 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： MCP609-I/SL.
請參閱 資料表 以查看完整腳位配置。
典型應用
MCP609-I/SL 適用於 6 應用s: Battery-Powered Sensor Conditioning, Portable Medical Monitoring, Industrial Transducer Amplification, Audio Preamplifier Stages, Low-Power Data Acquisition, Embedded Control Analog Front Ends.
Battery-Powered Sensor Conditioning
The MCP609-I/SL is appropriate for conditioning low-frequency sensor signals in battery-powered equipment because four amplifiers are integrated into one 14-pin SOIC and the typical operating current is only 18.7 uA. Each channel can buffer a high-impedance source or apply moderate gain within the device’s 155 kHz gain-bandwidth product. Operation from a single 2.5 V to 5.5 V supply also simplifies battery-rail integration. The rail-to-rail output swing helps retain useful signal range near the supply limits. Designers should still verify input common-mode limits, source impedance, noise performance, and capacitive loading in the manufacturer datasheet.
推薦
Portable Medical Monitoring
MCP609-I/SL can support low-level conditioning in portable medical-monitoring equipment when the signal bandwidth is modest. Its four channels allow electrode, pressure, or temperature interfaces to share a compact 14-pin SOIC footprint, while the 18.7 uA typical operating current helps limit continuous power demand. The less-than-250 uV input offset specification is relevant when preserving small sensor signals, and the 2.5 V to 5.5 V single-supply range suits low-voltage systems. Medical designs must additionally evaluate noise, safety, leakage, calibration, and applicable regulatory requirements rather than relying on these general-purpose amplifier ratings alone.
推薦
Industrial Transducer Amplification
The MCP609-I/SL is a practical fit for low-frequency industrial transducer and control-signal conditioning where four channels must operate from a common low-voltage supply. The 155 kHz gain-bandwidth product is sufficient for many temperature, pressure, and position signals without introducing a high-speed amplifier’s greater power demand. Its 18.7 uA typical operating current is especially attractive in distributed sensor nodes, while the 14-pin SOIC package simplifies maintenance and replacement. Designers should check input bias current, common-mode range, output-current limits, electromagnetic interference immunity, and protection requirements before using it with industrial sensors.
推薦
Audio Preamplifier Stages
MCP609-I/SL can serve as a low-power preamplifier in battery-operated or compact audio products where four low-frequency channels are needed. The less-than-250 uV input offset voltage helps limit low-level signal error, and rail-to-rail output swing supports operation from a 2.5 V to 5.5 V single supply. Its 155 kHz gain-bandwidth product is adequate for many microphone, headphone-driver, and line-level conditioning paths, although it is not intended to replace a dedicated high-bandwidth audio amplifier. Output-load compatibility, distortion at the selected gain, input-noise behavior, and channel-to-channel matching should be verified before deployment.
推薦
Low-Power Data Acquisition
The MCP609-I/SL is suitable for compact, low-speed data-acquisition systems that require several conditioned analog inputs without a high-power amplifier array. Four independent amplifiers can handle source buffering, gain conversion, and active filtering in a 14-pin SOIC package. The 155 kHz gain-bandwidth product supports common low-frequency sensor and control signals, while the 18.7 uA typical operating current benefits unattended or portable instruments. Designers must select feedback resistors and compensation capacitors for the desired transfer function, verify settling performance for the selected closed-loop gain, and account for converter noise and reference accuracy in the overall acquisition chain.
推薦
Embedded Control Analog Front Ends
MCP609-I/SL can condition four analog inputs around an embedded controller, including potentiometer outputs, switch levels, temperature sensors, and low-current feedback signals. Its low 18.7 uA typical operating current helps preserve battery life in embedded systems, and the single 2.5 V to 5.5 V supply can simplify rail planning. The quad 14-pin SOIC package reduces external component count compared with four single-amplifier packages. Firmware and circuit design must still prevent unused channels from floating, preserve analog input limits, and provide adequate bypassing near the supply pins for stable operation.
推薦
推薦產品摘要
工程參考資料，適用於 MCP609-I/SL — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MCP609T-I/SL | MCP609-I/CL | MCP609T-I/CL | MCP609-E/SL | MCP609-V/SL |
|---|---|---|---|---|---|---|
| Package | SOIC-14 | SOIC-14 | SOIC-14 | SOIC-14 | SOIC-14 | SOIC-14 |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Amplifier Configuration | Quad operational amplifier | Quad operational amplifier | Quad operational amplifier | Quad operational amplifier | Quad operational amplifier | Quad operational amplifier |
| Gain-Bandwidth Product | 155 kHz | 155 kHz | 155 kHz | 155 kHz | 155 kHz | 155 kHz |
| Typical Operating Current | 18.7 uA | 18.7 uA | 18.7 uA | 18.7 uA | 18.7 uA | 18.7 uA |
| Input Offset Voltage | <250 uV | <250 uV | <250 uV | <250 uV | <250 uV | <250 uV |
| Supply Voltage Range | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| Output Swing | Rail-to-rail | Rail-to-rail | Rail-to-rail | Rail-to-rail | Rail-to-rail | Rail-to-rail |
| Grade or Qualification | I grade; detailed qualification not supplied | T grade; detailed qualification not supplied | CL grade code; detailed qualification not supplied | T and CL grade codes; detailed qualification not supplied | E grade code; detailed qualification not supplied | V grade code; detailed qualification not supplied |
主要差異化特點
- Four channels in one micropower SOIC package (對比MCP609-I/CL)
- Low offset voltage for low-level analog conditioning (對比MCP609-E/SL)
- Micropower operation with rail-to-rail output (對比MCP609T-I/CL)
設計說明
The MCP609-I/SL has a typical operating current of 18.7 uA, but total system consumption also includes input-bias current, output-load current, leakage, and any external divider or feedback network. Confirm the actual quiescent current and operating-current limits in the manufacturer datasheet. Place the required bypass capacitors next to the supply pins and keep supply-return paths short. If a sensor source can remain active while the amplifier supply is removed, verify input-protection behavior because the low operating current alone does not guarantee safe power-down conditions.
Do not treat rail-to-rail output as proof of a rail-to-rail input range. The verified excerpts specify rail-to-rail output swing but do not provide the input common-mode range. Check the input signal against the manufacturer’s allowable common-mode limits, especially near the 2.5 V minimum supply. Likewise, the 155 kHz gain-bandwidth product must not be interpreted as 155 kHz of usable closed-loop bandwidth at every gain. Select feedback resistors and compensation values for the intended gain, noise, and stability targets.
Place input, output, and bypass components to minimize loop area and avoid routing sensitive amplifier inputs beside noisy switching or high-current traces. Keep feedback resistors close to the appropriate channel pins to reduce parasitic capacitance and board leakage. Because no complete manufacturer pin table was present in the supplied excerpts, verify the 14-pin SOIC numbering against the official package drawing before PCB routing. Ground the unused amplifier channels in a stable configuration rather than allowing their inputs to float.
合規資訊
The supplied verified excerpts do not explicitly state compliance declarations. Grade-specific qualification and environmental requirements must be confirmed using the current Microchip product documentation.