MCP608-I/SN - 25uA CMOS RRIO Op Amp | Microchip Technology
部品番号: MCP608-I/SN ✓ 生産中MCP608-I/SN 概要
An operational amplifier, or op amp, is a voltage-gain building block that compares an inverting input with a non-inverting input and drives its output to represent their difference. The MCP608 belongs to the operational-amplifier hierarchy within analog ICs and analog semiconductors. Its rail-to-rail output swing permits the output voltage to approach the supply rails, making it useful in compact, low-voltage sensor, buffering, and signal-conditioning systems.
Key features include a 2.5 V minimum operating supply, less than 25 uA quiescent current, 155 kHz gain-bandwidth product, 0.08 V/us slew rate, and unity-gain stability. The low bias current supports high-impedance sources, while the maximum 250 uV input offset voltage helps preserve accuracy in amplifier and buffer configurations. Its general-purpose single-amplifier organization also includes a chip-select function according to the manufacturer product page.
The MCP608 family is implemented using Microchip's advanced CMOS technology. This architecture combines low power consumption with low input bias current, high open-loop gain, and rail-to-rail output behavior. Because the amplifier is unity-gain stable, it can be used directly as a voltage follower, although stability, output loading, capacitive drive, and noise behavior still require normal analog-layout verification.
Typical uses include battery-powered sensor interfaces, low-voltage data acquisition, current sensing, portable instrumentation, audio and communication signal conditioning, and general-purpose buffering. The 2.5 V minimum supply makes the MCP608 particularly appropriate for systems powered from a single low-voltage cell or regulated low-voltage rail.
When designing around the MCP608-I/SN, place input and output decoupling capacitors close to the device, provide a low-impedance return path, and verify operation across the full intended supply range. Maintain sufficient output-headroom analysis for the selected gain, and account for input common-mode range, output swing, noise, and external sensor-source impedance before finalizing the signal path.
ドロップイン代替品: MCP608-I/SN — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
この製品に利用可能なドロップイン代替品はありません。
代替品をリクエストMCP608-I/SN 最大定格＆電気的特性
| Amplifier Type | General Purpose |
| Number of Circuits | 1 circuit |
| Minimum Operating Supply Voltage | 2.5 V |
| Maximum Operating Supply Voltage | 6.0 V |
| 静止電流 | Less than 25 uA |
| Maximum Quiescent Current | 25 uA |
| Gain-Bandwidth Product | 155 kHz |
| Slew Rate | 0.08 V/us |
| Input Offset Voltage | 250 uV maximum |
| Low-Frequency Input Bias Current | 80 pA maximum at +85 C |
| Output Swing | Rail-to-rail |
| Gain Stability | Unity-gain stable |
| Chip Select | Yes |
| パッケージ | 8-SOIC, 0.154 inch body width, 3.90 mm |
| Packaging | Tube |
| ライフサイクル状態 | Active |
| RoHS ステータス | Compliant |
| Lead-Free Status | Lead-free |
| Standard Lead Time | 12 weeks |
MCP608-I/SN 8-soic, 0.154 inch body width, 3.90 mm ピン配置ガイド
MCP608-I/SN (8-soic, 0.154 inch body width, 3.90 mm パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: MCP608-I/SN.
詳細は データシート をご参照ください。
主な用途
MCP608-I/SN の用途: 6 件s: Battery-Powered Sensor Signal Conditioning, Portable Medical Monitoring, Industrial Current Sensing, Low-Voltage Data Acquisition, Audio and Communication Buffering, Portable Instrument Buffer.
Battery-Powered Sensor Signal Conditioning
The MCP608-I/SN fits low-power sensor front ends because it operates from 2.5 V to 6.0 V and consumes less than 25 uA of quiescent current. Its input bias current is rated at no more than 80 pA at +85 C, reducing loading on high-impedance sensors such as pH, optical, capacitive, or bio-sensing elements. Place the device in a non-inverting or inverting amplifier configuration close to the sensor, and use low-leakage feedback and bias resistors. The 155 kHz gain-bandwidth product is adequate for slowly varying signals, while the 250 uV maximum offset specification supports careful error budgeting. For duty-cycled systems, account for the sensor, protection network, and regulator current in addition to the amplifier.
おすすめ
Portable Medical Monitoring
The MCP608-I/SN can support compact medical-monitoring signal chains where low supply voltage, low amplifier power, and high input impedance are important. Its 2.5 V minimum supply accommodates low-energy portable systems, while the maximum 80 pA low-frequency input bias current at +85 C helps preserve signals from high-source-impedance sensors. The unity-gain-stable topology can support voltage followers, differential-style conditioning stages, and active filters. Designers must still verify medical qualification, input protection, isolation, leakage, noise, and applicable safety requirements; the verified data establishes RoHS and lead-free status but does not establish a medical-product certification.
おすすめ
Industrial Current Sensing
The MCP608-I/SN is suitable for low-side or filtered high-side current-sense amplification when the signal bandwidth and common-mode range remain within its electrical limits. Its 155 kHz gain-bandwidth product, 0.08 V/us slew rate, and 250 uV maximum input offset voltage are useful for slow plant-control or monitoring channels. Place the amplifier close to the shunt or sensing node to reduce pickup of motor-switching noise, and use a Kelvin connection where possible. The rail-to-rail output helps use the available output range, but designers must preserve output headroom under load and confirm the input common-mode range against the actual shunt voltage.
おすすめ
Low-Voltage Data Acquisition
The MCP608-I/SN is appropriate for slow, low-voltage acquisition channels that require an amplifier with low quiescent current and modest bandwidth. Its unity-gain-stable configuration simplifies buffer and gain-stage implementation, while the 155 kHz gain-bandwidth product supports filtering and conversion-system source-impedance requirements. Use short traces and a solid ground reference to reduce noise pickup, and place any anti-alias capacitor where its time constant remains compatible with the selected gain. The 2.5 V to 6.0 V operating range aligns with 3 V and 5 V systems, although the 6.0 V maximum should be respected with transient margin.
おすすめ
Audio and Communication Buffering
The MCP608-I/SN can buffer low-level audio or communication signals in compact, low-power equipment because it provides rail-to-rail output swing and a low-power operating current. Its unity-gain stability permits direct voltage-following use, and the 155 kHz gain-bandwidth product is suitable for many speech, control, and low-frequency audio paths. Keep the input source impedance low enough to control offset and bias errors, and avoid using the amplifier as a wideband line driver because its 0.08 V/us slew rate is modest. If signal amplitude approaches the supply rails, verify load-dependent output swing rather than assuming full rail-to-rail operation at every current.
おすすめ
Portable Instrument Buffer
The MCP608-I/SN is well matched to handheld measurement products that need a low-power precision buffer around sensors, dividers, or references. The maximum 250 uV input offset specification supports signal integrity in moderate-gain stages, and the low 80 pA maximum input bias current at +85 C reduces source-loading errors. The amplifier is unity-gain stable for straightforward buffering, while the low quiescent current helps preserve battery life. Designers should evaluate input-referred noise, offset drift, common-mode behavior, and temperature stability from the full datasheet before assigning a precision grade; those additional limits were not present in the supplied verified snippets.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: MCP608-I/SN — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 |
|---|---|
| Package | 8-SOIC (0.154 inch, 3.90 mm) |
| Brand | Microchip Technology |
| Operating Supply Voltage | 2.5 V to 6.0 V |
| Quiescent Current | Less than 25 uA |
| Gain-Bandwidth Product | 155 kHz |
| Slew Rate | 0.08 V/us |
| Input Offset Voltage | 250 uV maximum |
| Input Bias Current | 80 pA maximum at +85 C |
| Output Swing | Rail-to-rail |
| Gain Stability | Unity-gain stable |
| Circuit Count | 1 |
| Verified Unit Price | $1.8309 as of 2026-10-30 |
主な差別化要因
- Very low amplifier quiescent current （vs LM224DR)
- Low input bias current for high-impedance sources （vs TLV1504ID)
- Single-amplifier 8-SOIC implementation （vs LM248DR)
設計ノート
Place the MCP608-I/SN close to the source of the signal it conditions. Keep the non-inverting and inverting input traces short, avoid routing them beside switching nodes or motor-drive traces, and provide a continuous ground reference. Put input-bias or feedback resistors near the relevant input where practical so their thermal effects and leakage do not add significant error. If the sensor source is remote, assess cable capacitance and the amplifier's 155 kHz gain-bandwidth product before adding a compensation network.
Decouple the 2.5 V to 6.0 V supply close to pins 4 and 8 using the capacitance recommended by the manufacturer datasheet, and verify the capacitor voltage rating with transient margin. The MCP608-I/SN consumes less than 25 uA of quiescent current, but external feedback networks, protection diodes, leakage, and nearby circuitry can dominate system consumption. Confirm that every operating mode keeps the supply below 6.0 V and assess startup behavior when the chip-select function is used.
Validate output settling and stability in the final configuration rather than relying only on the 155 kHz gain-bandwidth and 0.08 V/us slew-rate figures. Unity-gain stability simplifies follower use, but noise gain, capacitive loading, and source impedance can alter transient behavior. Check headroom at the required output level, keep the input common-mode voltage inside the datasheet limits, and use an oscilloscope with adequate probe loading to confirm the resulting waveform at both 2.5 V and the highest intended supply voltage.
Do not assume that rail-to-rail output means the output reaches either rail at every load or that the input accepts a full-rail common-mode range. Confirm output swing under the intended load current, check input offset and bias-current error against the source impedance, and avoid using the unverified MPN in the MCP608T-I/SN suffix as evidence of a distinct electrical substitute. Also avoid allowing supply transients above the verified 6.0 V maximum rating.
コンプライアンス情報
The verified FindIC listing identifies MCP608-I/SN as RoHS compliant and lead-free. The verified data does not establish REACH, halogen-free, conflict-minerals, or automotive qualification status. AEC-Q100 is treated as not applicable because no automotive qualification is stated.
