LM358AM/NOPB - Dual Low-Power Op Amp | Texas Instruments
부품 번호: LM358AM/NOPB ✓ 활성LM358AM/NOPB 개요
An operational amplifier is a voltage-controlled differential amplifier that uses feedback to create stable, programmable gain. The LM358 belongs to the general-purpose operational-amplifier family within the broader analog IC and semiconductor hierarchy. Unlike precision or rail-to-rail designs, the LM358 is primarily intended for economical systems that operate from single or dual supplies and need moderate bandwidth, input common-mode range, and output-current capability.
The two amplifier sections are electrically independent, allowing each channel to process a different signal within the same package. Key features include a 700 kHz gain-bandwidth product, 0.3 V/us slew rate, low-power operation, and an output-current capability cited as 20 mA. These characteristics support common tasks such as sensor amplification, error amplification, voltage comparison, active filtering, and signal buffering without requiring two separate amplifier packages.
The LM358AM/NOPB is specified for a 3 V to 32 V supply range and an input common-mode range of ±1.5 V to ±16 V, depending on the operating configuration. Because it is not rail-to-rail, output swing and input range depend on the selected supply voltage and common-mode headroom. Designers should preserve those margins when processing signals close to the positive or negative rail.
Typical uses include 5 V sensor interfaces, industrial control loops, audio preamplifier stages, battery-powered instrumentation, active filters, and comparator-style feedback networks. The 8-pin SOIC package is easy to assemble on conventional through-hole-compatible PCB land patterns and supports automated manufacturing. The two-amplifier configuration can also reduce board area when two independent analog channels are required.
Design consideration: keep feedback networks close to the amplifier pins, provide stable bypass capacitance on the supply rail, and avoid forcing either input beyond the specified common-mode range. Output current and total power dissipation must be checked against the actual load, supply voltage, and ambient temperature because the two channels can contribute independently to device heating.
This page combines the manufacturer product information, package details, application guidance, pin mapping, and drop-in replacement analysis into a focused engineering reference for selecting, laying out, and qualifying the LM358AM/NOPB.
드롭인 대체품: LM358AM/NOPB — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: LM358AM/NOPB (동일 폼 팩터 및 풋프린트) — 차이점: Package, Slew Rate, Amplifier Type, Common-Mode Input Range, Input Offset Voltage.
LM358DR
✅ 드롭인가격 문의
데이터시트 보기 →LM2904DR
✅ 드롭인가격 문의
데이터시트 보기 →RC4558DR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
LM358AM/NOPB 최대 정격 & 전기적 특성
| Amplifier Count | 2 circuits |
| Product Type | Dual operational amplifier |
| Supply Voltage Range | 3 V to 32 V |
| Input Common-Mode Voltage Range | -1.5 V to +16 V |
| Gain-Bandwidth Product | 700 kHz |
| Slew Rate | 0.3 V/us |
| Output Current | 20 mA |
| Supply Configuration | Single or dual supply |
| 핀 수 | 8 pins |
| 패키지 | 8-SOIC |
| 실장 유형 | Surface mount |
LM358AM/NOPB 핀 구성
| 핀 1 | OUTA — Amplifier A output |
| 핀 2 | IN A- — Amplifier A inverting input |
| 핀 3 | IN A+ — Amplifier A non-inverting input |
| 핀 4 | GND — Ground connection |
| 핀 5 | IN B+ — Amplifier B non-inverting input |
| 핀 6 | IN B- — Amplifier B inverting input |
| 핀 7 | OUTB — Amplifier B output |
| 핀 8 | VCC — Positive supply connection |
일반적인 애플리케이션
LM358AM/NOPB 적합 용도: 6 애플리케이션s: Low-Voltage Sensor Signal Conditioning, Industrial Feedback Control, Active Audio and Low-Level Analog Filters, Battery-Powered Monitoring Equipment, Data Acquisition and Level Conditioning, Power-Supply Feedback and Monitoring.
Low-Voltage Sensor Signal Conditioning
The LM358AM/NOPB is well suited to conditioning sensors whose signals must be amplified into an ADC input range. Its two independent channels can amplify or buffer two related sensor channels, reducing package count while preserving the standard 8-SOIC footprint. The 3 V minimum supply supports low-energy systems, and the 700 kHz gain-bandwidth product provides useful bandwidth for common temperature, position, and light sensors. Unlike a rail-to-rail amplifier, it requires common-mode and output-swing headroom, so the sensor output range must be checked against the selected supply voltage. A practical approach is to place the sensor, amplifier, and analog filter near one another, use short feedback paths, and verify ADC input compatibility before fabrication.
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Industrial Feedback Control
LM358AM/NOPB can form the forward-path amplifier in simple industrial control loops where a 3 V to 32 V operating range and moderate bandwidth are sufficient. Its 0.3 V/us slew rate and 700 kHz gain-bandwidth product are appropriate for slow actuator and process-control loops rather than high-speed precision servo systems. The two independent channels allow one amplifier to condition the error signal while the other drives or senses another stage. Feedback resistors should be placed close to the relevant input pins to reduce parasitic coupling, and supply bypassing should be located beside the power and ground pins. Confirm output swing, load capability, and power dissipation under worst-case supply and ambient conditions.
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Active Audio and Low-Level Analog Filters
The dual LM358AM/NOPB package is suitable for modest-bandwidth active filtering and audio preamplification because it provides two amplifiers, 700 kHz gain-bandwidth product, and 0.3 V/us slew rate in an 8-SOIC package. It can implement first- or second-order active filter sections with external resistors and capacitors, although the selected component tolerances will directly influence cutoff accuracy and gain. Keep signal paths compact, avoid routing the input across high-current switching nodes, and verify that output peaks remain within the amplifier's available swing. For microphone or line-level stages, compare the complete signal chain's noise and distortion requirements rather than relying only on the bandwidth figure.
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Battery-Powered Monitoring Equipment
The LM358AM/NOPB fits portable monitoring equipment that operates from a low single supply and benefits from having two general-purpose amplifier channels in one package. Its stated 3 V to 32 V supply range allows operation from common low-voltage rails, while the low-power design supports portable instrumentation. Because input and output headroom are not rail-to-rail, designers should define the usable sensor and ADC signal range before selecting passive values. The 700 kHz bandwidth is more than adequate for many slow environmental measurements, but quiescent current and analog-signal power draw remain important in battery budgets. Use stable supply bypass capacitance, maintain short feedback paths, and evaluate the complete analog front end under minimum battery voltage.
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Data Acquisition and Level Conditioning
LM358AM/NOPB is appropriate for general-purpose data-acquisition front ends that must buffer or scale analog inputs before conversion. The dual configuration supports two channels on a common 8-SOIC footprint, and the 700 kHz gain-bandwidth product is suitable for many sensor bandwidths rather than high-speed sampling chains. Place the amplifier close to the source to minimize noise pickup, use a single ground reference strategy for the analog section, and route high-current digital and switching paths away from sensitive inputs. The design must maintain valid common-mode and output voltage ranges throughout signal variation. When the ADC input range is not centered conveniently, an inverting stage or level-shifting network may be required, subject to the output swing available from the selected supply.
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Power-Supply Feedback and Monitoring
The LM358AM/NOPB can monitor a regulated supply, amplify a feedback error, or provide an additional control element in an inexpensive power subsystem. Its wide 3 V to 32 V supply range supports many industrial and distributed rails, while the two channels can be allocated independently to sensing and control functions. The amplifier is not a dedicated linear regulator, so loop stability, compensation, and current capability must be evaluated by the designer. Use Kelvin-style routing where practical, keep high-current switching nodes away from the feedback amplifier, and account for ground offsets in the measured feedback point. Verify the output drive at the intended load and include a defined overvoltage or shutdown strategy for industrial fault conditions.
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추천 제품 요약
엔지니어링 참조 데이터: LM358AM/NOPB — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | LM358DR | LM2904DR | RC4558DR |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | ROHM Semiconductor |
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Amplifier Count | 2 circuits | 2 circuits | 2 circuits | 2 circuits |
| Product Type | Dual general-purpose operational amplifier | Dual general-purpose operational amplifier | Dual general-purpose operational amplifier | Dual general-purpose operational amplifier |
주요 차별점
- Original Texas Instruments LM358-family sourcing (vs RC4558DR)
- Direct same-brand SOIC-8 replacement path (vs LM2904DR)
- Two independent amplifiers in one package (vs RC4558DR)
설계 노트
Place the LM358AM/NOPB close to the signal source and route the two input and feedback networks directly to their corresponding pins. Keep the traces short to reduce capacitive loading and susceptibility to injected noise. Supply bypass capacitance should be positioned near pins 8 and 4, with a short ground return. Avoid creating a high-current return path underneath the analog input or feedback traces.
The LM358 is not rail-to-rail, so neither input nor output should be assumed to reach the supply rails. Confirm that the sensor or source voltage remains inside the -1.5 V to +16 V common-mode range and that the required output stays within the device's output swing. Re-evaluate these checks at the minimum supply voltage because a circuit that works at 12 V may fail to provide usable headroom at 3 V.
Use a common analog ground strategy and keep return currents associated with sensors, op amps, and comparators away from digital switching currents. A solid ground plane is generally preferable to fragmented routing, but sensitive input traces should remain short and should not cross switching-node copper. Decouple the supply at the IC and maintain symmetrical resistor placement around each amplifier to minimize parasitic differences between channels.
Evaluate both analog-signal current and device power dissipation at the maximum supply voltage and load. The two channels can operate simultaneously, so the worst-case thermal design may involve both amplifiers rather than one. Use the manufacturer thermal information for the exact 8-SOIC package and verify that the PCB copper area, airflow, and ambient temperature maintain the required junction margin.
규정 준수 정보
The product listings identify the device and package but do not state a specific RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status. Confirm environmental and lifecycle documentation with the manufacturer for the exact ordering code.
