LM358DR2GH - Dual 8-SOIC Operational Amplifier | onsemi
部品番号: LM358DR2GH ✓ 生産中LM358DR2GH 概要
An operational amplifier is a voltage-controlled, high-gain differential amplifier used to amplify, buffer, compare, filter, or control analog signals. Its positive and negative inputs form the signal input, while the output provides the amplified result. The dual-channel LM358 architecture allows two independent amplifier functions to share one package, reducing board area and simplifying designs that need more than one analog signal path. Unlike precision, rail-to-rail, or low-noise modern amplifier families, the LM358 is primarily selected for its general-purpose versatility and broad supply compatibility.
The key verified features are the dual 2-circuit configuration, 8-SOIC surface-mount package, and 45 nA per-channel power-consumption figure. The SOIC package is suitable for conventional reflow assembly and automated manufacturing, while its exposed pin layout supports straightforward routing of power and feedback connections. Two amplifiers in one package can be used for instrumentation amplification, active filtering, comparator functions, sensor conditioning, or buffering where a single amplifier would otherwise require multiple packages.
The LM358DR2GH belongs to the LM358 family associated with single-supply operation from an industrial-style positive rail toward ground. Its two channels support common single-supply analog circuits, including non-inverting and inverting stages referenced to ground. Because a general-purpose dual amplifier is often selected for availability and direct replacement rather than specialized signal-chain performance, designers should still verify supply limits, input common-mode range, output swing, input offset, noise, and stability requirements in the manufacturer datasheet for the exact ordering code.
Typical uses include low-level sensor amplification, audio preamplification, active filters, current monitoring, comparators with open-collector outputs, and general instrumentation. In a two-channel design, one section might amplify a sensor output while the other provides an active filter or buffer. The 8-SOIC format also simplifies conversion from traditional through-hole prototyping methods when a suitable adapter or equivalent SOIC footprint is used.
For a new PCB, follow the exact pin assignments and decoupling guidance in the onsemi LM358 family documentation. Place the supply bypass capacitor close to the positive supply and ground pins, keep feedback traces short, and avoid routing sensitive input traces beside switching nodes. Check the footprint dimensions and pin-one orientation before assembly because an SOIC-8 footprint does not eliminate lead-pitch or orientation errors.
This page combines package identification, sourcing information, application guidance, and drop-in replacement analysis for engineers evaluating LM358DR2GH. It highlights where the dual 8-SOIC device is useful while directing critical electrical validation to the manufacturer datasheet.
ドロップイン代替品: LM358DR2GH — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: LM358DR2GH （同一形状・フットプリント） — 相違点: Amplifier Type, Number of Channels, Package.
LM358DR2G
✅ ドロップイン価格はお問い合わせください
データシートを見る →LM358ADR2G
✅ ドロップイン価格はお問い合わせください
データシートを見る →LM2904DR
✅ ドロップイン価格はお問い合わせください
データシートを見る →TP358
✅ ドロップイン📋 参考代替品（カタログ未掲載）
SGMI8358
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LM358DR2GH 最大定格＆電気的特性
| Amplifier Type | 2 Circuit, Standard (General Purpose) Amplifier |
| Number of Channels | 2 channels |
| パッケージ | 8-SOIC |
| Power Consumption | 45 nA per channel |
| 実装タイプ | Surface Mount |
| ピン数 | 8 pins |
| Input Type | Differential input |
LM358DR2GH ピン構成
| ピン 1 | OUT1 — Channel 1 output |
| ピン 2 | IN1- — Channel 1 inverting input |
| ピン 3 | IN1+ — Channel 1 non-inverting input |
| ピン 4 | V- — Negative supply or ground reference |
| ピン 5 | IN2+ — Channel 2 non-inverting input |
| ピン 6 | IN2- — Channel 2 inverting input |
| ピン 7 | OUT2 — Channel 2 output |
| ピン 8 | V+ — Positive supply input |
主な用途
LM358DR2GH の用途: 6 件s: Industrial Sensor Signal Conditioning, Audio Preamplification, Active Filtering and Oscillator Support, Current and Voltage Monitoring, Communications Interface Buffering, Battery-Powered Analog Control.
Industrial Sensor Signal Conditioning
The LM358DR2GH is useful for amplifying and filtering signals from industrial sensors when two analog stages are required in a compact 8-SOIC package. One channel can provide gain for a low-level sensor output, while the second can implement an active low-pass filter or buffer the result. Its dual architecture reduces package count and simplifies routing compared with two separate amplifiers. The 45 nA per-channel power-consumption figure cited for this family supports low-power signal-chain designs. Engineers should still verify the actual sensor impedance, common-mode range, and output-swing margin against the onsemi LM358 family datasheet.
おすすめ
Audio Preamplification
The LM358DR2GH can provide two channels of general-purpose preamplification for line-level or microphone-related circuits when rail-to-rail input operation and very low noise are not mandatory. Its two-channel 8-SOIC configuration is practical for stereo or dual-mono audio paths and allows gain, filtering, and buffering to be combined. The manufacturer family documentation provides the authoritative values for input bias current, noise, gain-bandwidth product, and output swing. Keep feedback components close to the relevant amplifier pins and compare the verified operating range with the actual signal amplitude to avoid clipping.
おすすめ
Active Filtering and Oscillator Support
The two channels in the LM358DR2GH can implement active low-pass, high-pass, or band-pass networks, depending on the required gain, frequency, and load. This makes the 8-SOIC device useful for analog smoothing after sensor or communications circuitry, as well as for small-signal oscillator and test-fixture designs. Passive component tolerances, amplifier gain bandwidth, phase margin, and load stability determine the useful frequency range. The 45 nA per-channel power-consumption figure cited for the part is attractive for low-power instrumentation, but designers should verify whether output drive and slew rate satisfy the selected network.
おすすめ
Current and Voltage Monitoring
The LM358DR2GH is applicable to current and voltage monitoring stages that compare or amplify a sensor-derived signal, especially when two independent analog channels can reduce board area. One channel may amplify the measured quantity, while the other can provide a buffered reference or comparator input. Its dual 8-SOIC package simplifies routing and can fit power-supply instrumentation or control boards. The onsemi LM358 family datasheet should be used to confirm input common-mode range and output-swing behavior under single-supply operation, because those limits determine whether the monitored node can be measured directly or needs attenuation.
おすすめ
Communications Interface Buffering
The LM358DR2GH can serve as an analog buffer or gain stage around low-speed communications and interface circuitry where conventional single-supply operation is preferred. The two channels can buffer a transmit reference and condition a receive path, or provide gain before an ADC. Its 8-SOIC format supports compact board layouts, while the dual configuration reduces the number of amplifier packages. Designers should compare input bias current, common-mode limits, output capability, and AC performance in the manufacturer datasheet, and should keep sensitive traces short to minimize capacitive pickup and signal degradation.
おすすめ
Battery-Powered Analog Control
The LM358DR2GH fits battery-powered analog control designs that require two conventional amplifier functions and prioritize low supply current. The cited 45 nA per-channel power-consumption figure makes it relevant to remote sensing, portable instrumentation, and low-duty-cycle control loops. Its 8-SOIC package permits automated reflow assembly while integrating two channels in a small footprint. Supply compatibility remains the principal design check: confirm the minimum operating voltage, input common-mode range, output swing, and leakage over temperature in the onsemi family documentation before defining the battery operating window.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: LM358DR2GH — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | LM358DR2G | LM358ADR2G | LM2904DR | TP358 | SGMI8358 |
|---|---|---|---|---|---|---|
| Brand | onsemi | onsemi | onsemi | Texas Instruments | 3PEAK | SGMC (Sagna Microelectronics) |
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Number of Channels | 2 | 2 | 2 | 2 | 2 | 2 |
| Amplifier Classification | Standard General Purpose | Standard General Purpose | Standard General Purpose | General Purpose | LM358-Class | LM358-Class |
主な差別化要因
- Two general-purpose amplifier channels in one package （vs LM2904DR)
- Low cited per-channel power consumption （vs LM2904DR)
- Exact manufacturer-family ordering path （vs SGMI8358)
設計ノート
Place the positive-supply bypass capacitor close to pin 8 and the ground reference close to pin 4. Keep the supply loop compact and use a local return path for the capacitor rather than routing return current through sensitive input territory. The verified listing cites 45 nA per channel, but actual board-level consumption also includes divider, bias, feedback, and load currents. Check the datasheet's quiescent-current definition and temperature behavior before interpreting that figure as total system demand.
Route the two amplifier channels so that high-impedance input traces remain short and are not parallel to switching-node or power-inductor traces. Connect feedback resistors and compensation components directly to their corresponding pins to minimize parasitic capacitance and instability. Maintain a common ground reference between the two channels unless the circuit intentionally uses different supply arrangements. Confirm the SOIC-8 land pattern against the manufacturer package drawing and verify pin-one orientation during assembly inspection.
Do not assume that every LM358-family ordering code is a qualified drop-in substitute. Confirm the exact suffix, package, supply limits, input common-mode range, output swing, load capability, and qualification requirements. For a replacement to be used without PCB changes, it must preserve the standard LM358 pin arrangement in an 8-SOIC footprint. After substitution, repeat noise, stability, offset, and transient tests because manufacturer-specific tolerances can change the usable margin even when the pinout matches.
コンプライアンス情報
Compliance attributes require confirmation from the current onsemi product record and applicable declaration documents.