LM358NG - Dual 1MHz Op Amp | onsemi | Signal Conditioning
料号： LM358NG ✓ 量产中LM358NG 概述
An operational amplifier is an amplifier IC whose open-loop gain and feedback network determine the gain of a closed-loop circuit. The dual amplifier belongs to the hierarchy of analog amplifiers, signal-chain ICs, and semiconductors. Unlike a precision rail-to-rail amplifier, the LM358NG is primarily intended for conventional supply-voltage operation and can accept input common-mode voltages extending toward ground or the negative supply, VEE. This makes it useful in single-supply systems where signals remain near the lower supply rail.
Key features include two amplifier sections, a 3 V to 32 V operating supply range, 1 MHz gain-bandwidth product, 0.6 V/µs slew rate, 100 nA input bias current, and 7 mV input offset voltage. The dual configuration reduces package count and board area when two independent analog functions are required. Commercial temperature operation is identified by the distributor listings, while the low-power drain supports battery-operated instrumentation where every milliampere affects useful runtime.
The internal architecture provides useful behavior for low-frequency, cost-sensitive analog designs. Its approximately 1 MHz bandwidth permits operation well below audio frequencies and supports common feedback networks for amplification, filtering, comparison, and summing functions. The 0.6 V/µs slew rate is adequate for signals whose required full-scale transition time is not extremely short. As with any non-rail-to-rail amplifier, designers should verify input and output operating ranges against the actual supply voltages and signal amplitudes.
Typical uses include low-side current sensing, sensor amplification, transducers, audio preamplifier stages, active filters, and general instrumentation. In a 5 V system, the dual structure can process two channels or use one section for filtering and the other for amplification. In split-supply circuitry, the common-mode input range extending toward ground or VEE supports bipolar-style signal conditioning without requiring a separate rail-to-rail input device.
The primary design consideration is power-rail compatibility. The LM358NG supports 3 V to 32 V operation, but output swing and common-mode limits remain constrained by the supplies. PCB layout should keep input traces short, provide a solid ground plane, and place power-bypass capacitors close to the supply pins. Stable feedback components and adequate output isolation are also important when driving capacitive loads.
This product page consolidates verified onsemi and distributor information, pricing context, package details, pin assignment, alternative-device guidance, and practical application notes. It is intended to help engineers evaluate whether the DIP-8 dual amplifier fits a new design or a repair before comparing it with other pin-compatible devices.
直接替换替代料： LM358NG ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： LM358NG （相同外形与封装尺寸） ——差异在于 Product Type, Supply Configuration.
LM2904NG
✅ 直接替换📋 参考替代料（不在目录中）
LM358-N
✅ 直接替换📋 参考替代料（不在目录中）
LM358N
✅ 直接替换联系询价
查看数据手册 →LM358N
✅ 直接替换联系询价
查看数据手册 →LM358N
✅ 直接替换联系询价
查看数据手册 →LM358N
✅ 直接替换联系询价
查看数据手册 →LM358NG 最大额定值与电气特性
| Product Type | Dual general-purpose operational amplifier |
| Number of Amplifier Channels | 2 channels |
| Supply Voltage Range | 3 V to 32 V |
| Gain-Bandwidth Product | 1 MHz |
| Slew Rate | 0.6 V/µs |
| Input Offset Voltage | 7 mV |
| Input Bias Current | 100 nA |
| Input Common-Mode Range | Extends to ground/VEE |
| Supply Configuration | Single supply or split supply operation |
| Power Dissipation Characteristic | Low power drain |
| Operating Temperature Grade | Commercial temperature |
| Package Type | 8-pin PDIP |
| 引脚数量 | 8 pins |
| 安装类型 | Through-hole |
LM358NG 引脚配置
| 引脚 1 | OUT1 — Output of amplifier 1 |
| 引脚 2 | IN1- — Inverting input of amplifier 1 |
| 引脚 3 | IN1+ — Noninverting input of amplifier 1 |
| 引脚 4 | GND — Ground connection |
| 引脚 5 | IN2+ — Noninverting input of amplifier 2 |
| 引脚 6 | IN2- — Inverting input of amplifier 2 |
| 引脚 7 | OUT2 — Output of amplifier 2 |
| 引脚 8 | VCC — Positive supply connection |
典型应用
LM358NG 适用于 6 应用s: Single-Supply Sensor Conditioning, Industrial Control Signal Amplification, Low-Cost Audio Preamplification, Active Filters and Signal Conditioning, Battery-Powered Portable Instruments, Communications and Interface Buffering.
Single-Supply Sensor Conditioning
The onsemi LM358NG is well suited to conditioning sensors that operate from a single supply because its common-mode input range extends toward ground or VEE. Its 100 nA input bias current can be useful with high-impedance sensing networks, while the two amplifier sections can amplify and filter the same signal without requiring a second IC. A practical implementation uses one section as a non-inverting stage and the other as an active low-pass filter. The 7 mV input offset and approximately 1 MHz gain-bandwidth product must be acceptable for the sensor accuracy and signal bandwidth, and the output swing should be checked at the selected 3 V to 32 V supply.
推荐
Industrial Control Signal Amplification
LM358NG provides two general-purpose amplifier channels for low-frequency industrial control signals on a 3 V to 32 V supply range. The 1 MHz gain-bandwidth product is sufficient for many pressure, temperature, position, and process-control interfaces that are filtered before conversion or supervision. Negative feedback can establish gain, while the second channel may provide buffering or active filtering. The device's commercial-temperature identification and low-power drain suit general instrumentation, but engineers must verify output swing, output-current capability, and noise behavior against their specific sensor and controller. Layout should include local supply bypassing and a continuous ground plane.
推荐
Low-Cost Audio Preamplification
The LM358NG can serve as a low-cost audio preamplifier in low-bandwidth consumer, communication, or instrumentation circuits. Its 0.6 V/µs slew rate provides usable response for many audio-band signals, and the dual package allows two channels to be amplified without duplicating the IC footprint. The 3 V to 32 V operating range accommodates common single-supply systems. Designers should account for the 7 mV input offset and verify actual output swing and distortion, since the supplied data does not establish rail-to-rail output behavior. A feedback network with suitable impedance and power-supply bypassing close to pin 8 will help maintain predictable low-frequency performance.
推荐
Active Filters and Signal Conditioning
The two channels in LM358NG can implement active low-pass, high-pass, or band-pass sections when component tolerances and phase margins are addressed. A nominal 1 MHz gain-bandwidth product provides adequate open-loop gain for moderate-Q filters at audio or low-frequency control bandwidths, while dual placement simplifies cascaded filter layouts. The 3 V minimum supply supports compact battery-operated circuitry, and the common-mode range extending toward ground is useful when filtering signals close to the lower rail. Component tolerances can shift the actual cutoff frequency, so the design should include worst-case analysis for R and C variation and verify stability with the intended load.
推荐
Battery-Powered Portable Instruments
LM358NG's low-power drain and ability to operate from a 3 V supply make it a practical candidate for portable measurement and monitoring equipment. The 100 nA input bias current reduces loading on high-impedance sensor sources, and one amplifier can provide gain while the other performs buffering or filtering. The 8-pin PDIP package is easy to prototype and service but occupies more board area than surface-mount alternatives. Runtime calculations should use the actual supply voltage, load, quiescent current, and output duty cycle rather than assuming the minimum supply condition. Reverse-polarity protection and battery-transient filtering should be implemented separately.
推荐
Communications and Interface Buffering
The LM358NG can buffer slow sensor, logic-interface, or communication signals where approximately 1 MHz bandwidth and 0.6 V/µs slew rate are sufficient. Its dual structure allows one channel to buffer a source while the other performs level conditioning or filtering, reducing component count in a compact board. The 3 V to 32 V supply range supports industrial and embedded systems. Designers should not use the generic LM358 designation to assume high-speed line-driver capability; instead, verify signal amplitude, edge rate, load capacitance, and output-current limits in the selected replacement's datasheet. Keep feedback loops short and place bypass capacitance close to the supply pins.
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推荐产品汇总
工程参考数据： LM358NG ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | LM2904NG | LM358-N | LM358N | LM358N | LM358N |
|---|---|---|---|---|---|---|
| Manufacturer | onsemi | onsemi | Texas Instruments | STMicroelectronics | Motorola | Philips |
| Package | 8-pin PDIP | 8-pin PDIP | 8-pin PDIP | 8-pin PDIP | 8-pin PDIP | 8-pin PDIP |
| Amplifier Channels | 2 channels | 2 channels | 2 channels | 2 channels | 2 channels | 2 channels |
关键差异点
- Two general-purpose amplifier channels in one 8-pin PDIP （对比 LM324D)
- Commercial-grade onsemi source with verified 1 MHz bandwidth （对比 NE5534DR)
- Common-mode input range extends toward ground or VEE （对比 TLV1504ID)
- Direct onsemi LM2904NG sourcing alternative （对比 LM2904NG)
设计说明
Place the LM358NG power-bypass capacitor close to pins 8 and 4, and use a continuous ground plane to minimize supply-impedance feedback into the amplifier. Keep the two input traces short, avoid routing them beside high-current switching nodes, and connect the inverting-input return path close to the device. Because the DIP package has long leads and comparatively large parasitic inductance, decouple each supply branch locally rather than relying only on a remote bulk capacitor.
Do not assume rail-to-rail input or output behavior merely because the LM358 family is frequently used with 3 V to 32 V supplies. The verified common-mode range extends to ground or VEE, but output swing and output-current limits still require checking against the actual supply and load. Also account for 7 mV input offset and approximately 1 MHz bandwidth when selecting feedback resistors and filter capacitors. A circuit requiring high precision, very low offset, or high-frequency settling should use a more suitable amplifier family.
Verify capacitive loading at each output before finalizing the PCB. The LM358NG provides 0.6 V/µs slew rate and approximately 1 MHz bandwidth, but long cables, ADC sample-and-hold inputs, or large shunt capacitances can reduce phase margin and cause oscillation. Add an isolation resistor close to the output when driving capacitive loads, and test the completed layout with the actual source impedance, cable length, supply, and feedback network rather than relying only on simulation.
The verified data identifies low power drain and a 3 V to 32 V supply range but does not provide a complete quiescent-current curve. In battery-powered designs, measure the actual current at the intended supply voltage and output duty cycle, including downstream divider and feedback-network losses. Use the lowest supply that satisfies input common-mode and output-swing requirements, and protect the IC from reverse battery polarity or supply surges because those protections are not specified in the supplied data.
合规信息
The supplied distributor and datasheet search results do not explicitly state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. The device is identified as commercial temperature; no AEC-Q100 qualification is stated.