LM258DG - Dual 1 MHz Op Amp, 3-32 V | onsemi Industrial
部品番号: LM258DG ✓ 生産中LM258DG 概要
An operational amplifier, or op amp, is a voltage-gain building block within analog and mixed-signal electronics. A dual op amp contains two amplifiers in one package, allowing one device to implement two independent signal paths or a differential stage. The LM258DG belongs to the operational-amplifier hierarchy: dual operational amplifier, general-purpose amplifier, analog IC, and ultimately semiconductor. Its broad supply range accommodates conventional industrial rails, while its ground-referenced input capability simplifies designs powered from a single supply.
Key verified characteristics include two amplifier circuits, 1 MHz gain-bandwidth product, 0.6 V/µs slew rate, and operation from 3 V to 32 V. The listed operating temperature range is -25 °C to 85 °C. Because the gain-bandwidth product is 1 MHz, the device is best suited to low-frequency amplification, buffering, comparators, and general feedback-control loops rather than high-speed signal processing.
The LM258 architecture derives from the circuit designs used in quad operational amplifiers. This dual configuration provides functional flexibility while limiting package count and board area. Single-supply operation allows the input and output signals to remain near the lower supply rail, and split-supply operation permits bipolar-style signal paths. The verified operating range supports both 3 V minimum-supply designs and higher-voltage industrial systems.
Typical applications include sensor signal conditioning, transducer amplification, current-loop interfaces, low-frequency active filters, and general-purpose analog buffers. Its two channels can also be used together as a differential amplifier when the circuit requires matched amplifier functions in one package. Applications should account for the 1 MHz bandwidth and 0.6 V/µs slew rate when setting gain, bandwidth, and expected output slew behavior.
A key design consideration is verifying input and output voltage excursions for the selected single- or split-supply configuration. Decoupling and stability should be implemented around the circuit required by the ON Semiconductor LM258 datasheet and the particular feedback network. Because detailed pin names, offset voltage, input bias current, and noise figures were not supplied in the verified data, those values must be confirmed before production release.
This page consolidates verified distributor specifications, sourcing information, same-package replacement candidates, and practical selection guidance. It adds engineering context for supply-range, bandwidth, packaging, and replacement decisions while clearly separating verified facts from unavailable parameters.
ドロップイン代替品: LM258DG — 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。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: LM258DG （同一形状・フットプリント） — 相違点: Package, Supply Configuration, Gain-Bandwidth Product, Mounting Type, Maximum Supply Voltage.
LM258DR2G
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LM258AD
✅ ドロップイン価格はお問い合わせください
データシートを見る →LM258NG
✅ ドロップイン価格はお問い合わせください
データシートを見る →LM358DG
✅ ドロップイン価格はお問い合わせください
データシートを見る →LM2904DG
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LM258DG 最大定格＆電気的特性
| Amplifier Type | General Purpose |
| Number of Circuits | 2 circuits |
| Gain-Bandwidth Product | 1 MHz |
| Slew Rate | 0.6 V/µs |
| Minimum Supply Voltage | 3 V |
| Maximum Supply Voltage | 32 V |
| 動作温度範囲 | -25 °C to 85 °C |
| パッケージ | 8-SOIC (0.154 in, 3.90 mm width) |
| Packaging Type | Tube |
| 実装タイプ | Surface Mount |
| Supply Configuration | Single or split supply |
| Common-Mode Input Range | Extending to ground/VEE |
| Bias Current Class | Low bias |
LM258DG 8-soic (0.154 in, 3.90 mm width) ピン配置ガイド
LM258DG (8-soic (0.154 in, 3.90 mm width) 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: LM258DG.
詳細は データシート をご参照ください。
主な用途
LM258DG の用途: 6 件s: Industrial Sensor Signal Conditioning, Transducer and Potentiometer Buffering, Current-Monitor and Control Loops, Low-Frequency Active Filters, Audio and Communication Interface Buffers, Battery-Powered Instrumentation.
Industrial Sensor Signal Conditioning
The LM258DG fits industrial sensor-conditioning stages because it combines two general-purpose amplifier channels, a 1 MHz gain-bandwidth product, and operation from 3 V to 32 V in an 8-SOIC package. The amplifier can buffer a sensor output before an ADC or controller while its common-mode input capability extends toward ground or VEE, which is useful for sensors operating close to the lower supply rail. The 0.6 V/µs slew rate supports low-frequency industrial signals, although signal bandwidth and phase margin should be checked against the selected closed-loop gain. Split-supply operation permits a centered signal path, while single-supply operation simplifies systems with limited rail headroom.
おすすめ
Transducer and Potentiometer Buffering
The LM258DG is suitable for buffering resistive transducers and potentiometers because its dual 8-SOIC implementation can handle two related low-frequency channels. With a verified 1 MHz gain-bandwidth product, it provides more bandwidth than a purely static buffer application typically requires while remaining straightforward to stabilize in conventional feedback configurations. The 3 V to 32 V supply range accommodates both compact low-voltage instrumentation and conventional industrial rails. The common-mode input range extending toward ground or VEE is particularly useful when a transducer output is close to the lower rail. The 0.6 V/µs slew rate must be adequate for the transducer's fastest expected transition.
おすすめ
Current-Monitor and Control Loops
The LM258DG can form the input stage of a current-monitor or process-control loop because both channels operate from the same 3 V to 32 V supply and support a common-mode range extending toward ground or VEE. One channel may amplify a scaled shunt voltage while the other handles feedback or an active filter, reducing board area compared with two separate dual packages. Its 1 MHz gain-bandwidth product supports conventional slow feedback loops, and the 0.6 V/µs slew rate limits how quickly the amplifier can follow larger output transitions. Design review should include output-swing margin and the datasheet compensation requirements for the chosen gain.
おすすめ
Low-Frequency Active Filters
The LM258DG is appropriate for low-frequency active-filter stages built around its two 1 MHz-class amplifier channels. Dual construction permits two filter sections in one 8-SOIC package, while the 0.6 V/µs slew rate helps preserve waveform shape at the filter's operating bandwidth. A broad 3 V to 32 V operating range lets the same architecture serve low-power single-supply equipment and higher-voltage industrial controls. The exact minimum stable closed-loop gain and compensation arrangement should be obtained from the ON Semiconductor LM258 datasheet. Filter component tolerances and amplifier offset must also be considered when setting corner frequency and attenuation accuracy.
おすすめ
Audio and Communication Interface Buffers
The LM258DG can serve as a general-purpose audio or communication-interface buffer where modest bandwidth is sufficient. Its dual-channel 8-SOIC package supports left/right audio buffering or paired transmit and receive paths, while the 1 MHz gain-bandwidth product covers many low-frequency voice and control signals. The 0.6 V/µs slew rate can reproduce moderate-amplitude waveforms without demanding a high-speed amplifier. Because the verified material does not specify total harmonic distortion, input noise, output-current capability, or maximum output swing, those characteristics must be checked before using the device in a demanding audio path. Supply layout and decoupling remain important for minimizing channel-to-channel disturbance.
おすすめ
Battery-Powered Instrumentation
The LM258DG is suitable for low-power instrumentation operated from a 3 V or higher source because the verified minimum supply voltage is 3 V and the device is identified as a low-bias, low-power-drain dual amplifier. Its common-mode input range extending toward ground or VEE supports battery-powered sensor interfaces in which internal signal levels remain close to the negative rail. The 8-SOIC package provides two channels for compact sensor-and-actuator circuitry, although a modern nanopower amplifier may be preferable when standby current dominates the design budget. Available bias-current, shutdown-current, and temperature-drift figures were not supplied, so they should be confirmed from the manufacturer datasheet.
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: LM258DG — 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 | LM258DR2G | LM258AD | LM258NG | LM358DG | LM2904DG |
|---|---|---|---|---|---|---|
| Package | 8-SOIC (0.154 in, 3.90 mm width) | 8-SOIC (0.154 in, 3.90 mm width) - same | 8-SOIC (0.154 in, 3.90 mm width) - same | 8-SOIC (0.154 in, 3.90 mm width) - same | 8-SOIC (0.154 in, 3.90 mm width) - same | 8-SOIC (0.154 in, 3.90 mm width) - same |
| Brand | onsemi | onsemi | onsemi | onsemi | onsemi | onsemi |
| Amplifier Type | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose |
| Number of Circuits | 2 circuits | 2 circuits | 2 circuits | 2 circuits | 2 circuits | 2 circuits |
主な差別化要因
- Broad single-supply operating range （vs LM358DG)
- Established LM258-family identity （vs LM2904DG)
- Direct onsemi family sourcing （vs LM258NG)
設計ノート
Do not treat the LM258 family as a generic modern rail-to-rail precision op amp. The verified information confirms operation from 3 V to 32 V, a common-mode input range extending toward ground or VEE, and single- or split-supply use, but it does not establish modern rail-to-rail output behavior. Verify input common-mode limits, output swing, minimum stable gain, offset, and bias current against the ON Semiconductor datasheet for the exact operating point.
Confirm the source and sink current requirements before using either amplifier channel to drive a load. The verified excerpts identify the device as a low-power, low-bias dual amplifier, but they do not provide output-current or output-voltage swing data. Use the manufacturer output-current and output-swing graphs, account for the load, and verify that the selected supply leaves sufficient headroom. A pull-back resistor can reduce capacitive-load overshoot when its effect on accuracy has been checked.
Keep feedback components and sensitive input nodes physically short, and place supply-decoupling capacitance close to the relevant package pins. The dual configuration requires attention to both channels because shared supply connections can couple disturbances between them. Use a quiet ground-return strategy for reference-sensitive signal paths, keep high-current return currents away from input returns, and review the datasheet layout guidance before finalizing the SOIC-8 footprint and exposed thermal considerations.
コンプライアンス情報
The verified distributor snippets do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements for LM258DG. A separate LM258DG versus LM258DR2G comparison page was retrieved, but its compliance values were not exposed in the snippet and therefore cannot be assigned to this MPN.
