LM358AMX/NOPB - Dual 32V 1MHz Op Amp | Texas Instruments
料号： LM358AMX/NOPB ✓ 量产中LM358AMX/NOPB 概述
An operational amplifier is an analog integrated circuit that uses high-gain differential amplification to compare an inverting input with a non-inverting input. The LM358 family belongs to the broader hierarchy of operational amplifiers, analog amplifiers, and semiconductor signal-conditioning devices. Two amplifiers in one package can provide gain, buffering, active filtering, current-to-voltage conversion, or general feedback control when their power requirements and electrical limits suit the circuit.
The LM358AMX/NOPB combines two general-purpose amplifier sections with a 32 V supply capability and 1 MHz bandwidth. Its dual-circuit configuration saves board area compared with two separate single amplifiers, while the SOIC (D) package supports conventional surface-mount assembly. The 0°C to 70°C rating is the principal distinction to verify when replacing this part in equipment exposed to temperatures outside the commercial range.
Each amplifier section operates from the same external supply pins, and the package provides separate input and output connections for both channels. The manufacturer identifies the device as a standard general-purpose amplifier rather than a precision, low-noise, high-speed, or rail-to-rail-input part. Designers should therefore base input-signal range, offset, bias-current, slew-rate, and output-swing decisions on the corresponding LM358-N electrical characteristics rather than assume the behavior of newer amplifier families.
Typical uses include two-channel sensor conditioning, buffered analog measurements, audio preamplification, active filters, comparator-style threshold circuits, and general industrial control. A single package is especially useful when two modest-bandwidth signal channels share the same board and supply rails. Independent amplifier channels also allow one section to perform signal conditioning while the other handles monitoring or feedback within the same system.
For PCB design, use the manufacturer's pin-description table when assigning tracks because exposed-pad, thermal, and no-connect details depend on the exact package drawing. Place the input network close to the corresponding amplifier pins, keep feedback-loop routing compact, and provide adequate decoupling between the supply pins and ground. Confirm output swing and common-mode limits at the selected supply voltage before using the device near either rail.
This product page combines the manufacturer's exact ordering information with practical guidance on package reuse, dual-amplifier implementation, thermal-range verification, and same-footprint sourcing. It helps engineers distinguish the 32 V, 1 MHz commercial-temperature device from parts with different pinouts, package styles, extended-temperature ratings, or substantially different amplifier performance.
直接替换替代料： LM358AMX/NOPB ——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： LM358AMX/NOPB （相同外形与封装尺寸） ——差异在于 Amplifier Type.
LM358AM/NOPB
✅ 直接替换联系询价
查看数据手册 →LM358ADR2G
✅ 直接替换联系询价
查看数据手册 →LM358AMX
✅ 直接替换📋 参考替代料（不在目录中）
LM358AMX/NOPB 最大额定值与电气特性
| Amplifier Type | Dual general-purpose operational amplifier |
| Number of Circuits | 2 circuits |
| Number of Amplifiers | 2 amplifiers |
| Maximum Supply Voltage | 32 V |
| Gain-Bandwidth Product | 1 MHz |
| 工作温度范围 | 0°C to 70°C |
| Package Type | SOIC (D) |
| 引脚数量 | 8 pins |
| 安装类型 | Surface mount |
| Channel Count | 2 channels |
LM358AMX/NOPB soic (d) 引脚配置指南
LM358AMX/NOPB（soic (d) 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： LM358AMX/NOPB.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LM358AMX/NOPB 适用于 6 应用s: Dual-Channel Sensor Conditioning, Active Audio Preamplification, Voltage Threshold Monitoring, Active Filtering and Signal Shaping, Power-Supply Feedback and Control, Data Acquisition and Instrumentation.
Dual-Channel Sensor Conditioning
The LM358AMX/NOPB is suitable when an industrial measurement board must amplify two related sensor outputs without allocating two separate amplifier packages. Its two independent amplifier sections can provide noninverting gain, level shifting, or buffering around sensors such as temperature probes, pressure transducers, and resistive dividers. The 1 MHz gain-bandwidth product gives ample bandwidth for signals well below that limit, while the 32 V maximum supply rating supports higher-voltage industrial interfaces. The 0°C to 70°C rating fits commercial-temperature equipment, but the enclosure temperature must remain inside that range. Confirm the input common-mode range and output swing at the selected supply voltage.
推荐
Active Audio Preamplification
The LM358AMX/NOPB can implement two modest-bandwidth preamplifier or buffer stages in audio equipment. One amplifier may condition a microphone or line-level source, while the other can support monitoring, gain control, or a second channel in a stereo path. Its 1 MHz gain-bandwidth product is suitable for voice-band and conventional audio circuitry without the speed of a dedicated low-noise audio amplifier. The dual SOIC package reduces board area and supply-component count. Review output swing, slew rate, input bias behavior, and channel separation in the LM358-N datasheet, and use an external coupling capacitor where the selected circuit requires single-supply operation.
推荐
Voltage Threshold Monitoring
The LM358AMX/NOPB can form a general-purpose threshold detector or comparator-style circuit for a 32 V-class control system. By applying a reference to one input and the sensed voltage to the other, an amplifier channel can provide open-collector-oriented feedback behavior when used in the conventional LM358 configuration. The second channel can monitor another rail or implement a complementary threshold. This approach is useful in battery, charger, and industrial control boards where modest bandwidth and low power are more important than very low offset. Validate input overvoltage, output sink current, response speed, and logic thresholds before using the device in a safety-critical function.
推荐
Active Filtering and Signal Shaping
The LM358AMX/NOPB is useful for first-order active filters and low-frequency signal-shaping networks because it provides two amplifier channels with a 1 MHz gain-bandwidth product. A pair of RC networks and amplifier stages can implement low-pass, high-pass, or notch responses around sensors and communication interfaces. The 8-pin SOIC package makes the two sections convenient to place near the signal source and return path. Component tolerances and the amplifier's finite gain-bandwidth response determine the achievable corner frequency and attenuation, so simulation and worst-case tolerance analysis are important. The commercial 0°C to 70°C rating must also be checked against the intended enclosure environment.
推荐
Power-Supply Feedback and Control
The LM358AMX/NOPB can provide error amplification, soft-start assistance, or feedback monitoring in a basic power-control board. One channel can compare a divided output-voltage sample with a reference, while the other monitors an input or fault condition. Its 32 V maximum supply rating is relevant to higher-voltage control systems, and the 1 MHz bandwidth is adequate for many slow outer-loop regulation functions. The device is not a switching-regulator controller, so loop compensation, source impedance, output swing, and startup behavior must be designed explicitly. Keep feedback traces short, use a stable reference, and ensure fault conditions force the power stage into a defined state.
推荐
Data Acquisition and Instrumentation
The LM358AMX/NOPB can serve as a practical front-end for low-frequency instrumentation signals that require two amplifier functions per board. A channel may provide high input-impedance buffering before an ADC, while the second channel drives a guard buffer, reference amplifier, or analog mux output. The 1 MHz bandwidth covers many slow sensor and measurement channels, and the SOIC package supports compact analog layouts. Check the ADC input range, acquisition time, source impedance, and required settling accuracy before selecting the amplifier. Because this is a general-purpose LM358 grade, use the manufacturer electrical data to assess offset, bias current, common-mode range, and output drive rather than assuming precision performance.
推荐
推荐产品汇总
工程参考数据： LM358AMX/NOPB ——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 | LM358AM/NOPB | LM358ADR | LM358AMX |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | onsemi |
| Package | 8-pin SOIC (D) | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC |
| Amplifier Configuration | Dual | Dual | Dual | Dual |
| Number of Pins | 8 pins | 8 pins | 8 pins | 8 pins |
| Surface-Mount Package | Yes | Yes | Yes | Yes |
| Distinct Ordering Suffix | AMX/NOPB | AM/NOPB | ADR | AMX |
关键差异点
- Two independent general-purpose amplifier channels in one compact package （对比 LM358AMX)
- 32 V maximum supply capability （对比 LM358AMX)
- Commercial-temperature 0°C to 70°C operating range （对比 LM358AM/NOPB)
设计说明
Place input resistors and feedback components directly beside their associated LM358 amplifier pins to minimize parasitic capacitance and stabilize the closed-loop response. Keep the two channels physically separated when one handles a low-level signal and the other drives a larger load. Route the ground return from decoupling capacitors directly to the device ground pins rather than through the ground plane of an unrelated analog section.
Use the manufacturer’s LM358-N electrical table to select the supply range, supply-current budget, and output loading. Decouple the supply pins close to the package with a short ground return, and avoid long supply traces that add series impedance. When working near the 32 V maximum, include tolerances and transient conditions in the design so normal supply variation does not bring the device near an absolute maximum limit.
Do not assume that any 8-pin dual op amp is a drop-in replacement. Verify the pin-to-pin input, output, supply, and ground assignments, then compare input-common-mode range, output swing, offset, bias current, slew rate, and temperature limits. The commercial LM358AMX/NOPB is rated for 0°C to 70°C; substituting it into an automotive or extended-temperature product can invalidate the original environmental requirement.
Use the manufacturer’s output-swing and common-mode specifications at the actual supply voltage. A single-supply circuit may require input and output biasing to keep both channels inside the linear operating region. Avoid placing high-impedance sources directly at inputs without accounting for bias-current error, and provide adequate output-load headroom because the LM358 is a general-purpose amplifier rather than a high-current buffer.
合规信息
The exact ordering variant is specified for 0°C to 70°C operation and is not identified as an automotive-qualified AEC-Q100 device. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status require confirmation from the current manufacturer product documentation.
