LM258N - Dual 32 V 700 kHz Op Amp | Amplifier IC
MPN： LM258N ✓ 啟用中LM258N 概覽
An operational amplifier is a high-gain analog building block that compares two input voltages and drives its output to reduce their difference. A differential input amplifier, voltage follower, comparator-style interface, or control loop can be built around the LM258N when the required bandwidth, slew rate, supply voltage, and input/output range fit the device. The LM358-family architecture also allows operation from a single supply or split supply, making it useful in systems whose signal is referenced near ground.
Verified product information identifies the LM258-N as a dual 32 V, 700 kHz operational amplifier with -25°C to 85°C operation. The related LM258N distributor listings identify an 8-pin Mini DIP package and a general-purpose dual amplifier configuration. The device is therefore suited to industrial and instrumentation circuits where a through-hole package and wide supply range are useful, provided the circuit designer checks the exact manufacturer datasheet for input common-mode limits, output swing, supply current, offset voltage, and thermal limits.
The internally compensated amplifiers simplify implementation of unity-gain and conventional inverting or non-inverting stages because no external compensation network is required for ordinary closed-loop use. The 1.1 MHz gain-bandwidth product supports many low-frequency signal paths, while the 0.6 V/µs slew rate limits large-signal response. These characteristics make the LM258N more appropriate for instrumentation, buffering, and control than for high-speed signal chains.
Typical uses include sensor signal conditioning, low-frequency active filters, audio and communications interface stages, analog control loops, and general dual-amplifier boards. In a single-supply circuit, the input and output signal ranges must remain inside the device's allowable common-mode and output-swing limits. The 8-pin DIP package also favors through-hole prototyping and repairable industrial assemblies.
For PCB layout, keep input and feedback paths short, provide a solid ground reference, and place decoupling capacitors close to the supply pins. Avoid placing noisy switching nodes beside high-impedance input traces. Because the verified data does not provide every electrical limit, exact compliance status, pricing, or an official pin mapping for the generic LM258N ordering code, those details remain marked as data needed rather than inferred.
直接替換替代品，適用於 LM258N — 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： LM258N （相同外形與佔位） — 差異在於 Number of Amplifiers, Package, Supply Configuration.
LM358N
✅ 直接替換聯絡詢價
查看資料表 →LM358N
✅ 直接替換聯絡詢價
查看資料表 →LM358P
✅ 直接替換聯絡詢價
查看資料表 →LM358N
✅ 直接替換聯絡詢價
查看資料表 →LM258N 最大額定值與電氣特性
| Number of Amplifiers | 2 |
| Amplifier Type | Dual general-purpose operational amplifier |
| Maximum Supply Voltage | 32 V |
| Operating Supply Range | 3 V to 30 V |
| Gain-Bandwidth Product | 1.1 MHz typical |
| Gain-Bandwidth Product, Verified Product Page | 700 kHz |
| Slew Rate | 0.6 V/µs typical |
| 工作溫度範圍 | -25°C to 85°C |
| 封裝 | 8-pin Mini DIP |
| 安裝類型 | Through-hole |
| 拓撲 | Internally frequency compensated |
| Supply Configuration | Single supply or split supply |
| Input Configuration | Differential input |
| Number of Channels | 2 independent amplifiers |
LM258N 8-pin mini dip 腳位配置指南
LM258N（8-pin mini 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： LM258N.
請參閱 資料表 以查看完整腳位配置。
典型應用
LM258N 適用於 6 應用s: Sensor Signal Conditioning, Industrial Control Interfaces, Active Audio and Communication Filters, Transducer and Sensor Buffering, Power-Supply Feedback and Monitoring, Educational and Through-Hole Prototyping.
Sensor Signal Conditioning
The LM258N fits low-frequency sensor conditioning because it provides two independent, internally compensated amplifiers in one 8-pin Mini DIP package. The verified 3 V to 30 V supply range supports common instrumentation rails, while the listed 1.1 MHz gain-bandwidth product is ample for many resistive, capacitive, and slow transducer signals. Use one channel for buffering and the other for gain or active filtering. Check input bias current, offset voltage, common-mode range, and output swing against the sensor before layout release.
推薦
Industrial Control Interfaces
LM258N is appropriate for industrial control and instrumentation interfaces that operate from a single supply or split supply and do not require high-speed signal processing. Its two channels can implement independent error amplifiers, actuator drivers, or analog feedback stages around a controller. The verified 32 V maximum rating and -25°C to 85°C product-page range provide useful design context, but the actual selected manufacturer datasheet controls absolute maximums. Add supply filtering and verify output drive into the chosen load.
推薦
Active Audio and Communication Filters
The LM258N can implement low-frequency active filters and general audio or communications interface stages when the signal bandwidth is below the verified 1.1 MHz gain-bandwidth listing. Internal frequency compensation simplifies closed-loop implementation, while the 0.6 V/µs listed slew rate helps assess large-signal movement. The part is not automatically a low-noise audio choice, so input-referred noise, distortion, output swing, and load drive should be checked for the exact manufacturer data before using it in a precision audio path.
推薦
Transducer and Sensor Buffering
A dual LM258N provides an efficient way to buffer a sensor while preserving a second channel for reference generation or gain shaping. The through-hole 8-pin Mini DIP package is convenient for prototype boards, repairable assemblies, and educational or industrial control equipment. The verified operating range supports single-supply designs, but a midpoint bias may be required to preserve signal headroom. Confirm input bias current, offset, common-mode limits, and output current against the transducer source impedance and measurement accuracy budget.
推薦
Power-Supply Feedback and Monitoring
The LM258N can monitor a power rail and amplify the difference between a feedback node and a reference, making it useful in inexpensive linear and regulated-supply designs. Its dual architecture allows one channel to perform regulation feedback while the other provides an indicator or limit signal. The verified 3 V to 30 V operating class is relevant for many rails, but the amplifier must maintain its input common-mode range and output swing during startup, load transients, and fault conditions. Verify the exact limits before selecting resistor values.
推薦
Educational and Through-Hole Prototyping
The LM258N is well suited to breadboard and through-hole prototype boards because it is available as an 8-pin DIP-style dual amplifier and uses familiar single-supply or split-supply operation. The verified manufacturer descriptions identify internally frequency-compensated channels, making common inverting, non-inverting, buffer, and comparator-style test circuits straightforward to construct. For reliable prototypes, use a stable reference, decouple the supply rails, and avoid exceeding the selected manufacturer's input and output limits.
推薦
推薦產品摘要
工程參考資料，適用於 LM258N — 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 | LM358N | LM358P | LM358P |
|---|---|---|---|---|
| Package | 8-pin Mini DIP | 8-pin Mini DIP / 8-pin DIP | 8-pin through-hole DIP | 8-pin through-hole DIP |
| Brand | STMicroelectronics | STMicroelectronics | onsemi | Texas Instruments |
| Number of Amplifiers | 2 | 2 | 2 | 2 |
| Availability Signal | Distributor listing identifies STMicroelectronics LM258N at DigiKey | Distributor listing identified | Distributor listing identified | Comparison result identified |
主要差異化特點
- Wide single-supply operating range (對比LM358N)
- Dual-channel integration (對比LM358P)
- Internal frequency compensation (對比LM358P)
設計說明
Decouple each supply rail directly at the LM258N pins using the capacitor values recommended by the selected manufacturer datasheet. The verified information confirms operation from 3 V to 30 V and a 32 V maximum designation, but it does not provide the exact output-current limit or quiescent current. Keep the supply within the exact absolute maximum and verify startup, load transients, and output swing under the worst input condition. Estimated: if the exact datasheet later provides Iout and quiescent current, calculate PD = (VIN − VOUT) × IOUT + VIN × IQ, then compare the result with the package thermal limit.
Place input, feedback, and supply-connection traces close to the relevant LM258N pins. Use a continuous ground plane and route sensitive non-inverting inputs away from switching nodes, relay coils, and high-current return paths. In a single-supply design, keep the signal within the common-mode range and reserve enough output headroom for the load. The through-hole DIP package simplifies prototyping, but lead spacing, soldering clearance, and thermal airflow still need deliberate layout planning.
Do not treat every LM258N manufacturer or LM358-family ordering code as automatically interchangeable. Verify pin numbers, differential input polarity, supply limits, common-mode range, output swing, offset voltage, bias current, temperature grade, and load capability. The verified search results establish package and family similarities, but they do not provide a complete cross-reference matrix. Prototype the exact replacement and compare it against the original circuit over supply, temperature, and load corners.
Use the LM258N for low-frequency signal paths and avoid assuming its 1.1 MHz listed gain-bandwidth product is the usable closed-loop bandwidth at every gain. The 0.6 V/µs listed slew rate also limits large-signal response. For sensor inputs, minimize trace capacitance and leakage-sensitive surfaces; for filters, calculate component tolerances and amplifier input-current error before relying on the nominal cutoff. If the application requires rail-to-rail input or output, use a device explicitly designed for those requirements.
合規資訊
The verified search results identify manufacturer and distributor pages but do not provide compliance declarations. Compliance must be confirmed from the exact manufacturer product documentation.