LM258DG - Dual 1 MHz Op Amp, 3-32 V | onsemi Industrial
MPN： LM258DG ✓ 啟用中LM258DG 概覽
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.
直接替換替代品，適用於 LM258DG — 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： LM258DG （相同外形與佔位） — 差異在於 Package, Supply Configuration, Gain-Bandwidth Product, Mounting Type, Maximum Supply Voltage.
LM258DR2G
✅ 直接替換📋 參考替代品（不在目錄中）
LM258AD
✅ 直接替換聯絡詢價
查看資料表 →LM258NG
✅ 直接替換聯絡詢價
查看資料表 →LM258DG 最大額定值與電氣特性
| 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 |
| 工作溫度範圍 | -25 °C to 85 °C |
| 封裝 | 8-SOIC (0.154 in, 3.90 mm width) |
| Packaging Type | Tube |
| 安裝類型 | 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) 腳位配置指南
LM258DG（8-soic (0.154 in, 3.90 mm width) 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： LM258DG.
請參閱 資料表 以查看完整腳位配置。
典型應用
LM258DG 適用於 6 應用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.
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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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 LM258DG — 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 | 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 |
主要差異化特點
- Broad single-supply operating range (對比LM358DG)
- Established LM258-family identity (對比LM2904DG)
- Direct onsemi family sourcing (對比LM258NG)
設計說明
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.
合規資訊
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.
