LM358ADRG4 - Dual 700kHz Op Amp, 8-SOIC | Texas Instruments
N.º da peça: LM358ADRG4 ✓ AtivoLM358ADRG4 Visão geral
An operational amplifier is an analog integrated circuit that uses high open-loop gain and negative feedback to amplify the difference between two input voltages. The LM358 belongs to the operational-amplifier hierarchy within analog signal-chain ICs and power-management applications. Frequency compensation allows each channel to provide stable closed-loop operation in common noninverting, inverting, voltage-follower, summing, and comparator configurations without external compensation networks.
The LM358ADRG4 provides two amplifier sections in one compact 8-SOIC package, reducing board area compared with separate single-channel amplifiers. Its 700 kHz gain-bandwidth product supports moderate-bandwidth signal paths, while the 0.3 V/us slew rate limits large-signal response speed. The wide ±1.5 V to ±16 V operating range accommodates both low-voltage and conventional bipolar analog systems, and the split-supply capability allows operation around a nonzero midpoint voltage.
Each amplifier channel includes differential inputs, an output, and independent biasing. Internal compensation is a key practical feature because it eliminates the external frequency-compensation capacitor commonly associated with general-purpose op-amp designs. However, stable operation still depends on correct feedback routing, suitable output loading, and appropriate input and output voltage ranges. The device is intended for linear amplification rather than high-speed, low-voltage, or rail-to-rail precision applications.
Typical uses include sensor-signal conditioning, audio preamplification, motor and actuator control loops, active filtering, low-current buffer stages, and general dual-channel instrumentation. The two channels can amplify related signals or perform separate functions, such as sensing and reference buffering, while keeping the implementation in one standard surface-mount package.
For PCB design, place input and output connections away from high-current switching paths, maintain short feedback traces, and use a local bypass capacitor from the supply pin to ground. Check input common-mode and output-swing limits against the actual single- or split-supply rails. Avoid relying on the LM358 for millivolt-level precision because its input offset and bias characteristics are appropriate for general-purpose rather than precision instrumentation.
This page combines device specifications, application guidance, drop-in replacement comparisons, and design notes to support faster engineering selection. It also highlights where an alternate LM358 grade may offer a better fit for temperature, automotive qualification, or manufacturing requirements.
Alternativas drop-in para LM358ADRG4 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com LM358ADRG4 (mesmo formato e footprint) — diferindo em Gain-Bandwidth Product, Package.
LM358ADG4
✅ Drop-InConsulte o preço
Ver ficha técnica →LM358ADR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
LM358DRG3
✅ Drop-InConsulte o preço
Ver ficha técnica →LM358BIDR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
LM358M
✅ Drop-InConsulte o preço
Ver ficha técnica →LM358ADRG4 Classificações máximas e características elétricas
| Amplifier Type | General-purpose operational amplifier |
| Number of Amplifiers | 2 independent channels |
| Gain-Bandwidth Product | 700 kHz |
| Slew Rate | 0.3 V/us |
| Supply Voltage Range | ±1.5 V to ±16 V |
| Single-Supply Operation | 3 V to 32 V |
| Encapsulamento | 8-SOIC, 3.90 mm width |
| Tipo de montagem | Surface mount |
| Shipping Format | Tape and reel |
| Frequency Compensation | Internal |
Configuração de pinos do LM358ADRG4
| Pino 1 | OUT1 — Amplifier 1 output |
| Pino 2 | IN1- — Amplifier 1 inverting input |
| Pino 3 | IN1+ — Amplifier 1 noninverting input |
| Pino 4 | GND — Ground connection |
| Pino 5 | IN2+ — Amplifier 2 noninverting input |
| Pino 6 | IN2- — Amplifier 2 inverting input |
| Pino 7 | OUT2 — Amplifier 2 output |
| Pino 8 | VCC — Positive supply connection |
Aplicações típicas
LM358ADRG4 é adequado para 6 aplicaçãos: Industrial Sensor Signal Conditioning, Audio Preamplification and Buffering, Motor and Actuator Control Loops, Active Filtering and Analog Control, Portable Battery-Powered Instrumentation, Feedback Buffering in Power Control.
Industrial Sensor Signal Conditioning
The LM358ADRG4 is appropriate for amplifying low-level sensor signals because each channel is frequency compensated and can implement differential gain with external feedback resistors. Its 700 kHz gain-bandwidth product is adequate for common temperature, pressure, and position sensors whose bandwidth remains well below the amplifier's capability. The two independent channels can condition a sensor signal and buffer a reference in one 8-SOIC package. Designers should verify the sensor's common-mode voltage, maintain the required differential-input polarity, and provide input bias paths when the source is high impedance.
Recomendado
Audio Preamplification and Buffering
The LM358ADRG4 can serve as a general-purpose audio preamplifier or buffer in conventional analog signal paths. Its 0.3 V/us slew rate and 700 kHz gain-bandwidth product accommodate mid-band audio and control signals without the complexity of a high-speed amplifier. One channel can amplify a source while the other buffers the input or drives a following stage. Headroom must be checked carefully because the output does not swing fully to the supply rails, so the signal level should leave adequate margin below clipping in the selected gain configuration.
Recomendado
Motor and Actuator Control Loops
The LM358ADRG4 can implement error amplifiers, feedback comparators, and control-signal buffers in industrial and electromechanical systems. Its dual-channel configuration permits one channel to sense a control condition and the other to shape or amplify the drive command. The 700 kHz gain-bandwidth product supports moderate loop bandwidth, while the 0.3 V/us slew rate limits how quickly large output changes can occur. Keep the amplifier outside high-current switching paths and account for common-mode range, output swing, and supply bypass stability.
Recomendado
Active Filtering and Analog Control
Both LM358ADRG4 channels can be configured for active low-pass, high-pass, or notch-filter functions when supported by the available gain-bandwidth product of 700 kHz. The internally compensated architecture simplifies implementation because standard closed-loop filter equations can be used with resistor and capacitor networks. Component tolerances and the amplifier's finite gain and slew rate should be included when calculating cutoff frequency and stopband behavior. Confirm that the signal remains within the amplifier's common-mode and output-swing limits across temperature and component variation.
Recomendado
Portable Battery-Powered Instrumentation
The LM358ADRG4 is useful in low-power instrumentation because its operating voltage range begins at 3 V for single-supply use. Two channels can process complementary or sequential analog signals while sharing one package and supply rail. The general-purpose input characteristics suit sensors that do not require millivolt-level offset accuracy, but the complete signal chain must avoid violating the input common-mode range. A local supply bypass capacitor should be placed close to pin 8, with a short ground return to minimize supply noise and instability.
Recomendado
Feedback Buffering in Power Control
The LM358ADRG4 can buffer remote voltage-sense lines and amplify error signals around a controlled power rail. Its split-supply capability supports feedback systems centered on ground, and its 700 kHz bandwidth is suitable for relatively slow regulation loops. Input protection and routing become important when the sense node is above or below the local ground reference because common-mode limits still apply. Keep the sense pair short, matched, and away from switching nodes, and verify that the output remains inside its swing limits at worst-case line and load conditions.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para LM358ADRG4 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | LM358ADG4 | LM358ADR | LM358DRG3 | LM358BIDR | LM358M |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-SOIC | 8-SOIC - same package | 8-SOIC - same package | 8-SOIC - same package | 8-SOIC - same package | 8-SOIC - same package |
| Number of Amplifiers | 2 | 2 | 2 | 2 | 2 | 2 |
| Amplifier Configuration | Dual, independent channels | Dual, independent channels | Dual, independent channels | Dual, independent channels | Dual, independent channels | Dual, independent channels |
Principais diferenciais
- Documented complete replacement (vs LM358ADG4)
- No PCB change for an equivalent family option (vs LM358ADR)
- Multiple same-brand sourcing options (vs LM358BIDR)
Notas de projeto
Route both input channels as short, matched traces where differential behavior matters, especially when the source impedance is high. Connect the bypass capacitor directly between pin 8 and pin 4 with minimal loop area. Keep feedback components close to the corresponding amplifier inputs, and avoid routing input or feedback paths beneath switching-regulator power stages.
Calculate the output-current demand per channel and confirm that the chosen feedback network does not overload the amplifier. For a single 5 V supply, use an input signal and output target that remain inside the specified common-mode and output-swing limits. Do not assume the output can reach either rail; leave adequate headroom for signal amplitude and load transient.
The LM358ADRG4 is frequency compensated for standard voltage-feedback use, but incorrect feedback polarity can still create positive feedback and oscillation. Begin with conservative gain, verify the signal polarity, and test across supply, temperature, and load variations. Do not substitute it for a rail-to-rail, micropower, or precision op-amp when those characteristics are required.
The 700 kHz gain-bandwidth product and 0.3 V/us slew rate set the useful small- and large-signal limits. Keep closed-loop bandwidth well below the gain-bandwidth product and avoid demanding full-scale output transitions faster than the slew rate allows. Add protection or filtering where sensor inputs can contain transients beyond the amplifier's input range.
Informações de conformidade
Compliance status was not explicitly stated in the cited product and comparison records. The LM358ADRG4 is an 8-SOIC, tape-and-reel operational-amplifier ordering configuration.