MCP608-I/P - 25µA, 2.5V CMOS Op Amp | Microchip
MPN： MCP608-I/P ✓ 啟用中MCP608-I/P 概覽
An operational amplifier is an analog IC that amplifies the difference between two input voltages while providing high input impedance and low output impedance. In the signal-chain hierarchy, the MCP608-I/P is an amplifier IC, specifically a general-purpose CMOS operational amplifier used for precision gain, filtering, buffering, and low-voltage analog conditioning. Its low supply current and low minimum supply voltage are especially useful when the circuit must operate from small energy sources or when every milliampere affects battery life.
The MCP608-I/P combines a 155 kHz gain-bandwidth product with low quiescent current, making it appropriate for moderate-bandwidth precision circuits rather than high-speed signal chains. According to the manufacturer product information, the offset voltage is less than 250 µV, while the operating current is typically 18.7 µA on the MCP608 family. Rail-to-rail output swing helps preserve usable output range near the supply rails, although input common-mode range, output drive, noise, and stability must be checked against the exact operating conditions.
The single amplifier includes chip-select functionality, allowing a system to reduce supply current when the amplifier is not needed. The -I/P ordering code identifies the industrial temperature and 8-PDIP package variant, although the exact temperature limits and full ordering information should be confirmed in the manufacturer datasheet before production release. The 8-PDIP footprint is through-hole and differs from the surface-mount package variants, so PCB substitution must be based on pinout and package verification.
Typical applications include portable measurement equipment, low-power sensor interfaces, battery-powered control systems, analog signal conditioning, voltage buffers, and low-frequency active filters. Because the MCP608-I/P is a low-power device, its performance should be evaluated for the required load, bandwidth, noise, and supply range rather than judged only by its nominal operating current.
For PCB designs, preserve the manufacturer-recommended bypass capacitors and verify the package pinout before layout release. In battery systems, confirm the total quiescent current of the amplifier and surrounding circuitry, and check output settling when operating at low closed-loop bandwidths. This page synthesizes verified product information, sourcing links, application guidance, and replacement constraints to support practical engineering selection.
直接替換替代品，適用於 MCP608-I/P — 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。
此系列的變體
與下列產品可直接替換的同系列型號： MCP608-I/P （相同外形與佔位） — 差異在於 Package, Product Type, Input Bias Current, Input Offset Voltage, Number of Amplifiers.
MCP606T-I/P
✅ 直接替換📋 參考替代品（不在目錄中）
MCP607-I/P
✅ 直接替換聯絡詢價
查看資料表 →MCP609-I/P
✅ 直接替換聯絡詢價
查看資料表 →MCP608-I/P 最大額定值與電氣特性
| Product Type | Single operational amplifier |
| Channel Count | 1 channel |
| Supply Voltage Minimum | 2.5 V |
| Supply Voltage Maximum | 6.0 V |
| 靜態電流 | 18.7 µA typical operating current |
| Rated Operating Current | 25 µA |
| Gain-Bandwidth Product | 155 kHz |
| Input Offset Voltage | Less than 250 µV |
| Input Common-Mode Rejection Ratio | 75 dB minimum |
| Input Offset Voltage | 0.25 mV |
| Output Swing | Rail-to-rail output swing |
| Input Bias Current | Low bias current; value not specified in provided data |
| Architecture | Advanced CMOS |
| 封裝 | 8-PDIP |
| Package Type | Through-hole plastic DIP |
| RoHS | Not specified in provided data |
| REACH | Not specified in provided data |
| AEC-Q100 Qualification | Not applicable or not specified in provided data |
| 安裝類型 | Through-hole |
MCP608-I/P through-hole plastic dip 腳位配置指南
MCP608-I/P（through-hole plastic dip 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： MCP608-I/P.
請參閱 資料表 以查看完整腳位配置。
典型應用
MCP608-I/P 適用於 7 應用s: Battery-Powered Sensor Interface, Portable Measurement Equipment, Low-Voltage Analog Signal Conditioning, Battery-Powered Environmental Monitoring, Voltage Buffer and Gain Stage, Precision Low-Frequency Filtering, Portable Industrial Control.
Battery-Powered Sensor Interface
The MCP608-I/P fits battery-powered sensor interfaces because the MCP608 family operates from 2.5 V and has a typical operating current of 18.7 µA. It can amplify a weak sensor signal before conversion by an ADC or MCU, reducing the need for a higher-power general-purpose amplifier. The 155 kHz gain-bandwidth product is suitable for low-to-moderate bandwidth conditioning, while the less-than-250 µV typical offset helps preserve DC accuracy. Designers should still verify the sensor’s common-mode range, the amplifier’s output swing, and the total current drawn by the complete battery-powered node.
推薦
Portable Measurement Equipment
Portable measurement instruments benefit from a low-power amplifier that can operate from a 2.5 V supply. MCP608-I/P can provide gain, buffering, and impedance isolation for sensors, transducers, or resistive dividers connected to an ADC. Its rail-to-rail output swing can help maintain useful output range near the supply limits, but the designer must check output drive and stability for the selected load. The 18.7 µA typical family operating current is especially useful when the measurement instrument must conserve battery energy during intermittent or handheld operation.
推薦
Low-Voltage Analog Signal Conditioning
MCP608-I/P is suited to general-purpose low-voltage analog signal conditioning where a single amplifier must buffer or amplify a sensor, divider, or control signal. Its 155 kHz gain-bandwidth product provides more bandwidth than a purely DC-oriented precision amplifier, while the low operating current supports compact instrumentation. Because rail-to-rail output swing does not automatically mean rail-to-rail input capability, verify the exact common-mode range, output current, load capacitance, and noise requirements in the manufacturer datasheet before finalizing the circuit.
推薦
Battery-Powered Environmental Monitoring
Environmental monitoring nodes often combine a low-power MCU, sensor, and analog front end on a small power budget. The MCP608-I/P can condition a sensor output while consuming a typical 18.7 µA within the MCP608 family, helping preserve battery life in remote or portable deployments. Its 8-PDIP package is practical for through-hole prototypes and serviceable industrial assemblies, although it is larger than a surface-mount option. Validate the sensor output range, operating temperature, moisture protection, and long-term power budget before deployment.
推薦
Voltage Buffer and Gain Stage
MCP608-I/P can function as a unity-gain buffer or a moderate-gain voltage-feedback stage in low-voltage control and measurement circuits. The low bias current and high open-loop gain identified by Microchip help preserve weak source signals, while the single-channel 8-PDIP package keeps the implementation straightforward for prototype and industrial through-hole boards. Verify unity-gain stability, capacitive loading, output swing, and the closed-loop gain bandwidth at the actual operating frequency before using the device in a filtering or feedback topology.
推薦
Precision Low-Frequency Filtering
The MCP608-I/P can be used in low-frequency active filters and signal-shaping networks when its 155 kHz gain-bandwidth product provides sufficient closed-loop bandwidth. Its typical offset below 250 µV is relevant to low-frequency measurements, and its low current consumption helps in portable or remotely powered equipment. The designer should calculate resistor and capacitor values around the desired noise gain, verify the amplifier’s stability with real loading, and account for offset and bias current when specifying the filter’s accuracy.
推薦
Portable Industrial Control
MCP608-I/P is appropriate for low-power industrial control boards where a sensor or control output must be amplified locally. The 2.5 V minimum supply supports compact regulated rails, while the 25 µA-rated operating current helps avoid loading limited power sources. Its through-hole 8-PDIP package can simplify repair and prototype assembly compared with very small packages. Industrial use still requires checking the exact temperature range, noise immunity, grounding, output drive, and manufacturer qualification information, none of which can be inferred solely from the verified snippets.
推薦
推薦產品摘要
工程參考資料，適用於 MCP608-I/P — 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 | MCP606T-I/P | MCP607-I/P | MCP609-I/P |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 8-PDIP | 8-PDIP | 8-PDIP | 8-PDIP |
| Product Type | Single operational amplifier | Operational amplifier | Operational amplifier | Operational amplifier |
主要差異化特點
- Low-power operation for portable analog conditioning (對比MCP606T-I/P)
- Gain-bandwidth product suited to general low-frequency signal conditioning (對比MCP607-I/P)
- Single amplifier with chip-select control (對比MCP609-I/P)
- Low offset for precision applications (對比MCP606T-I/P)
設計說明
Estimated power consumption for the MCP608-I/P itself is 18.7 µA at a 2.5 V supply, giving approximately 46.75 µW under that stated operating condition. This estimate excludes bias current, load current, chip-select state, and the current consumed by the ADC, MCU, sensors, and regulator. Validate the complete battery budget using maximum expected supply voltage and the worst-case load rather than relying only on the typical family figure.
Use the exact manufacturer pinout for the MCP608-I/P 8-PDIP ordering code before placing the device. Place input, output, bypass, and chip-select connections according to the datasheet reference layout, keep sensitive input traces short, and provide a low-impedance ground return. Because the package is through-hole, inspect lead spacing and clearance during PCB layout rather than applying a surface-mount land pattern.
Do not assume that rail-to-rail output swing means the amplifier accepts input voltages across the entire supply range. Verify input common-mode range, output swing at the required load, offset, bias current, and stability with capacitive loading. Also check the -I/P suffix, 8-PDIP package, and operating temperature before treating any MCP608-family MPN as a substitute.
For precision low-frequency signal conditioning, keep the high-impedance input path short and isolate it from switching nodes, power inductors, and high-current return paths. Place the bypass capacitor close to the device power pin and use a quiet ground reference. If the sensor source is high impedance, leakage, humidity, contamination, and PCB cleanliness can matter as much as the nominal amplifier offset.
合規資訊
The verified snippets mention RoHS only as a distributor field without a clear compliance result, and no verified REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification information was supplied.
