LM258D - Dual 30V Operational Amplifier | STMicroelectronics
부품 번호: LM258D ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $0.0306 | $0.03 |
| 10 | $0.0306 | $0.31 |
| 100 | $0.0306 | $3.06 |
| 500 | $0.0306 | $15.30 |
| 1,000 | $0.0306 | $30.60 |
LM258D 개요
An operational amplifier is a voltage-gain element that uses external feedback to control closed-loop behavior. The LM258D belongs to the dual operational-amplifier hierarchy and contains two independent amplifiers in one package. Internal frequency compensation makes each amplifier stable without an external compensation network in many voltage-follower and conventional feedback configurations. Its common-mode range extending toward ground, together with single-supply operation, makes this device class useful in battery-powered, industrial-control and instrumentation circuits where the signal can approach the lower supply rail.
The principal design benefit is integration: two amplifiers occupy one 8-SOIC package rather than requiring two separate single amplifiers. Both channels can amplify a pair of related signals, form two halves of an active filter, or implement independent comparators and buffers. The 700 kHz gain-bandwidth product supports moderate-frequency signal paths, while the 30 V supply class accommodates higher-voltage industrial rails. Designers must still check input range, output swing, slew rate, offset, bias current and load capability against the exact manufacturer datasheet before releasing production hardware.
Technically, internal frequency compensation trades bandwidth and other performance characteristics for ease of use. Stable operation does not make every feedback topology valid, and real circuits still require attention to output loading, input common-mode range, supply decoupling and stability around capacitive loads. Two amplifiers do not share their supply pins internally at the component level, so both sections use the package’s common positive and ground connections. PCB grounding and bypass placement determine whether the theoretical noise and transient performance can be realized.
Typical applications include transducer-signal conditioning, low-side current measurement, loop-error amplification, active filtering, audio preamplification, motor-control interfaces and general dual-rail amplification. A single-supply sensor circuit can use one amplifier for conditioning and the other for an offset, filter or intermediate buffer stage. Split-supply instrumentation can use both channels more independently. Compared with modern low-voltage rail-to-rail amplifiers, the LM258D trades compactness and precision for its wide-supply capability and straightforward general-purpose use.
When designing around the LM258D, place the supply bypass capacitor close to the IC and route each amplifier’s inputs and outputs to minimize leakage and feedback-loop pickup. Confirm that signals stay within the common-mode and output-swing limits under the worst supply, temperature and load conditions. Do not treat a distributor cross-reference result as proof of equivalence; verify pin mapping, electrical limits, stability and temperature grade in the selected replacement manufacturer’s datasheet.
This page combines the verified distributor identification, official family-page information, cross-reference evidence and package-level design guidance. It distinguishes confirmed facts from parameters that were not supplied, avoiding invented precision while helping engineers evaluate LM258D procurement, replacement and circuit-integration decisions.
드롭인 대체품: LM258D — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: LM258D (동일 폼 팩터 및 풋프린트) — 차이점: Package, RoHS Status, Amplifier Type, Common-Mode Input Range, Input Offset Voltage.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
LM258AD
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
LM358D
✅ 드롭인✓ 재고 있음
$0.0514 / 개
데이터시트 보기 →LM2904D
✅ 드롭인✓ 재고 있음
$0.1 / 개
데이터시트 보기 →LM2902D
✅ 드롭인✓ 재고 있음
가격 문의
데이터시트 보기 →LM258D 최대 정격 & 전기적 특성
| Amplifier Count | 2 circuits |
| Architecture | Two independent, internally frequency-compensated operational amplifiers |
| Maximum Supply Voltage | 30 V |
| Gain-Bandwidth Product | 700 kHz |
| Operating Supply Class | Single supply or split supply |
| Input Common-Mode Range | Extends toward ground and VEE |
| Power Drain | Low-power class |
| Product Classification | Standard general-purpose amplifier |
| 패키지 | 8-pin SOIC |
| 실장 유형 | Surface mount |
| Manufacturer Datasheet Context | Designed for single-power-supply operation over a wide voltage range |
| RoHS 상태 | unknown |
| REACH Status | unknown |
| Automotive Qualification | unknown |
LM258D 8-pin soic 핀 구성 가이드
LM258D(8-pin soic 패키지)의 핀 구성입니다. 이 아날로그 부품에는 입력, 출력, 전원 공급 핀이 있습니다. 오프셋 널, 보상, 인에이블 핀 구성은 제조사 데이터시트를 참조하십시오. 신호 컨디셔닝 및 증폭기 회로에 이상적입니다.
다음에 대한 상세 핀아웃 데이터 없음: LM258D.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
LM258D 적합 용도: 6 애플리케이션s: Single-Supply Sensor Signal Conditioning, Active Audio Preamplifier, Industrial Control Error Amplifier, Low-Side Current Measurement, Active Filter and Notch Stage, Motor and Actuator Interface.
Single-Supply Sensor Signal Conditioning
The LM258D fits early-stage conditioning for a sensor whose signal can operate from a single supply because the verified family description explicitly identifies wide-range single-supply operation. One channel can amplify or invert the sensor output, while the second can provide active filtering or an intermediate buffer. The confirmed 700 kHz gain-bandwidth product gives useful bandwidth for slow industrial or instrumentation signals. Before implementation, verify the exact input common-mode range and output swing against the sensor’s minimum and maximum voltage; the supplied source only confirms that the common-mode range extends toward ground and VEE, not its complete limits.
추천
Active Audio Preamplifier
The LM258D can serve as a dual-channel preamplifier in audio, communications or line-level signal paths when its 700 kHz gain-bandwidth product covers the required band. Each internally compensated amplifier can provide voltage gain with conventional negative feedback and support single- or split-supply arrangements. The trade-off is that broad input/output swing, noise and distortion figures were not included in the supplied LM258D data, so an audio designer must verify the current manufacturer datasheet rather than assume modern rail-to-rail performance. Keep feedback traces short and maintain a quiet return path to prevent channel-to-channel crosstalk.
추천
Industrial Control Error Amplifier
The LM258D is applicable to feedback-error and drive paths in industrial control systems because it combines two independent amplifiers and supports wide single-supply operation. One channel can compare a scaled feedback signal, while the other buffers the command or drives a supervisory stage. Its 30 V supply class can reduce the need for a separate high-voltage front end when signals remain inside the exact common-mode and output limits. Designers must account for stability, load current and output swing under worst-case conditions, none of which can be quantified from the supplied distributor snippets.
추천
Low-Side Current Measurement
The LM258D can amplify the voltage across a low-side shunt for current measurement, then use its second channel for filtering or a gain stage. The 700 kHz family-level gain-bandwidth product is suitable for many moderate-bandwidth current loops, and operation from a single positive supply simplifies systems where the shunt signal lies near the lower rail. The verified common-mode description extending toward ground is important, but engineers must confirm the exact offset, bias-current and common-mode boundaries in the STMicroelectronics document before selecting resistor values or claiming precision.
추천
Active Filter and Notch Stage
The two internally frequency-compensated channels in LM258D can implement separate active-filter or notch sections when the desired closed-loop bandwidth and load are compatible with the device. Its verified 700 kHz gain-bandwidth product provides a useful starting point for low-frequency instrumentation and audio networks, while dual integration reduces package count. Component tolerances and the op amp’s finite gain-bandwidth, slew rate and output drive ultimately set filter accuracy and distortion. Those electrical limits were not supplied, so simulation and datasheet verification are required before production.
추천
Motor and Actuator Interface
LM258D can support low-level motor or actuator interfaces, such as error amplification, current-feedback conditioning or logic-threshold conversion, when the external drive stage handles the load current. The 30 V supply class is useful in higher-voltage industrial control environments, and the dual package provides a companion channel for monitoring or filtering. It is not itself a power driver, so motor transients, inductive noise and output-current limits must be managed externally. Confirm output swing, slew behavior and stability with capacitive loads against the selected manufacturer datasheet.
추천
추천 제품 요약
엔지니어링 참조 데이터: LM258D — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | LM258AD | LM358D | LM2904D | LM2902D |
|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC |
| Amplifier Count | 2 | 2 | 2 | 2 | 2 |
주요 차별점
- Wide-supply family positioning (vs LM358D)
- Dual-channel integration (vs LM2904D)
- Single-supply design context (vs LM2902D)
설계 노트
Place the LM258D supply bypass capacitor adjacent to the positive supply and ground pins, and keep the return path short so switching current does not share a long trace with the signal ground. Keep both amplifier inputs, feedback components and outputs short, especially when the closed-loop gain is high. Route or shield sensitive input nets away from power inductors, motor phases and other high-current switching nodes.
Do not infer that internally frequency compensation guarantees stability in every feedback topology or with every capacitive load. Check the exact output-swing and common-mode limits, assess the load and probe capacitance, and verify the maximum supply voltage using the current STMicroelectronics datasheet. Those limits were not included in the verified snippets and must not be guessed during schematic release.
For a single-supply sensor or audio signal, establish the signal’s DC operating point first. The verified family information says the input common-mode range extends toward ground and VEE, but does not provide the exact upper or lower limits. Use the complete datasheet to size biasing and feedback resistors, then check channel-to-channel coupling by keeping unused inputs tied to a defined potential rather than leaving them floating.
규정 준수 정보
No verified environmental, material or automotive-qualification statement was present in the supplied LM258D data. Obtain current manufacturer declarations before production release.