LM2904AM8-13 - Dual 700 kHz Op Amp | Diodes Incorporated
部品番号: LM2904AM8-13 ✓ 生産中LM2904AM8-13 概要
An operational amplifier is a high-gain differential amplifier that uses negative feedback to control gain, filtering, amplification, buffering, or analog signal conversion. The dual-amplifier configuration reduces the number of active devices and board area needed when two independent analog channels are required. The LM2904AM8-13 belongs to the operational-amplifier hierarchy, where it sits below precision instrumentation amplifiers and above general-purpose discrete analog signal-conditioning functions.
The LM2904 series is identified as a general-purpose amplifier family with very low input-offset voltage relative to many older general-purpose op amps. The two channels share an 8-MSOP package while retaining independent inputs and outputs. A 700 kHz gain-bandwidth product supports general-purpose closed-loop operation at moderate signal frequencies, and the ±18 V supply capability provides useful headroom for circuits using higher signal amplitudes. These characteristics make the part appropriate where low cost, channel density, and supply-voltage flexibility are more important than rail-to-rail input or output operation.
The common operating topology places positive and negative feedback around each amplifier, setting closed-loop gain through external resistors. Because the device is intended for broad industrial signal conditioning, designers should verify the required input common-mode range, output swing, output-current capability, input-bias behavior, and stability against the exact operating conditions. The manufacturer datasheet provides the electrical limits and characteristic curves needed to select suitable feedback resistors, bypass capacitors, and external load conditions.
Typical uses include sensor-interface conditioning, low-frequency active filters, differential-input stages, transducer amplifiers, analog control loops, and general instrumentation. Industrial data-acquisition systems can use one channel for signal conditioning while using the second channel for biasing, monitoring, or an auxiliary gain stage. The device is also appropriate for compact embedded analog subsystems where an 8-MSOP package reduces board footprint compared with two separate single-amplifier packages.
When laying out the circuit, place bypass capacitors close to the supply pins and route feedback components close to their associated amplifier inputs and outputs. Avoid long parallel feedback traces, particularly when operating near the device's 700 kHz gain-bandwidth limit. Check whether the input source can develop voltages outside the specified common-mode range, because general-purpose op amps are not automatically rail-to-rail devices.
This product page combines the LM2904AM8-13 operating characteristics with package guidance, application engineering notes, and a parameter-by-parameter comparison framework. It is intended to help engineers identify design constraints quickly while preserving the distinction between published device specifications and application-specific engineering judgments.
ドロップイン代替品: LM2904AM8-13 — 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: LM2904AM8-13 （同一形状・フットプリント）.
この製品に利用可能なドロップイン代替品はありません。
代替品をリクエストLM2904AM8-13 最大定格＆電気的特性
| Amplifier Type | General-purpose operational amplifier |
| Number of Channels | 2 channels |
| Gain-Bandwidth Product | 700 kHz |
| Supply Voltage Range | ±18 V |
| Total Maximum Supply Voltage | 36 V |
| Architecture | Two independent high-gain operational amplifiers |
| パッケージ | 8-MSOP |
| 実装タイプ | Surface mount |
| RoHS ステータス | unknown |
| REACH Status | unknown |
LM2904AM8-13 8-msop ピン配置ガイド
LM2904AM8-13 (8-msop パッケージ) のピン配置。 このパワーデバイスは、ゲート、ドレイン、ソース端子を備えています。非極性パッケージの場合、正確なピン1の向きとフットプリントの詳細については、メーカーのデータシートを参照してください。主な用途には、電源設計、モータ駆動、負荷スイッチングがあります。
詳細なピン配置データはありません: LM2904AM8-13.
詳細は データシート をご参照ください。
主な用途
LM2904AM8-13 の用途: 6 件s: Industrial Sensor Signal Conditioning, Low-Frequency Active Filtering, Data Acquisition Front End, Analog Control and Feedback Loops, Instrumentation Buffering, Power Supply Monitoring and Control.
Industrial Sensor Signal Conditioning
The LM2904AM8-13 is well suited to amplifying weak transducer signals when each channel can remain inside the amplifier's specified input common-mode range and output-swing limits. One channel can provide gain for a sensor while the second channel provides a reference, monitor, or auxiliary gain function. Its 700 kHz gain-bandwidth product is suitable for low-to-moderate-bandwidth process and industrial measurements rather than high-frequency instrumentation. Engineers should establish the sensor excitation level, calculate resistor-based closed-loop gain, and add input protection where transients or out-of-range sensor faults are possible.
おすすめ
Low-Frequency Active Filtering
The LM2904AM8-13 can implement first- or second-order active-filter stages because its two independent channels and 700 kHz gain-bandwidth product provide adequate closed-loop bandwidth for many audio-band and industrial control-filter functions. The design should account for amplifier gain-bandwidth limitations, resistor tolerances, and output loading rather than treating the 700 kHz figure as unlimited filter bandwidth. Place each RC network close to its amplifier pins and verify noise, stability, and transient response across the intended signal range.
おすすめ
Data Acquisition Front End
The dual LM2904AM8-13 channels can condition two analog inputs before conversion in a compact data-acquisition front end. The 8-MSOP package reduces board area, while the ±18 V capability supports systems with higher analog signal levels than a low-voltage rail-to-rail amplifier. Use one channel for the primary sensor and the other for a reference or monitor input, then confirm that input bias current, offset voltage, common-mode range, and settling behavior meet the acquisition error budget.
おすすめ
Analog Control and Feedback Loops
The LM2904AM8-13 can serve as an error amplifier or general analog control element in feedback loops whose bandwidth is modest compared with its 700 kHz gain-bandwidth product. The two channels allow a loop amplifier to coexist with a buffer, monitor, or auxiliary summing stage in one package. Compensation and stability must be evaluated with the actual sensor, load, and compensation network because gain alone does not determine closed-loop behavior. Keep feedback paths short and ensure the output stage operates within its load and swing limits.
おすすめ
Instrumentation Buffering
The LM2904AM8-13 can buffer moderate-bandwidth instrumentation signals or form part of a classic three-op-amp instrumentation amplifier using three devices across two packages. Its dual-channel construction helps reduce total amplifier count when one channel provides the required gain and the other supports a reference or output function. Input bias-current and offset errors must be included in the overall error calculation, and common-mode range limits remain critical in bridge and transducer systems. The manufacturer characteristic curves should guide input impedance and resistor matching.
おすすめ
Power Supply Monitoring and Control
The LM2904AM8-13 can monitor a power rail, amplify the comparison against a reference, and provide an auxiliary control or buffer signal in dual-rail and industrial systems. Its ±18 V operating capability is useful when monitoring larger voltage ranges, although the amplifier does not automatically tolerate inputs beyond its absolute maximum ratings. Include input attenuation, clamping, and filtering as required, and confirm that the monitored node remains inside the input common-mode range during normal operation and fault conditions.
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: LM2904AM8-13 — 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 |
|---|---|
| Brand | Diodes Incorporated |
| Package | 8-MSOP |
| Amplifier Type | General-purpose operational amplifier |
| Number of Channels | 2 channels |
| Gain-Bandwidth Product | 700 kHz |
| Supply Voltage Range | ±18 V |
| Total Maximum Supply Voltage | 36 V |
| Mounting Type | Surface mount |
| Architecture | Two independent high-gain operational amplifiers |
| Supply Configuration | Single supply or split supplies |
主な差別化要因
- Combines two independent channels in a compact 8-MSOP package （vs LM2904P3)
- Supports conventional high-voltage analog rails （vs MCP6043-E/P)
- Provides dual-channel bandwidth for general-purpose signal paths （vs TLV2402ID)
設計ノート
Place input, output, feedback, and bypass connections using short PCB traces to reduce parasitic feedback and preserve the useful bandwidth of the 700 kHz gain-bandwidth product. Connect the supply bypass capacitor close to the amplifier's supply and ground pins, and keep the feedback-resistor network close to the corresponding channel. Avoid routing signals beneath the device where longer paths could increase coupling. Use the manufacturer pin-description table when assigning the 8-MSOP connections.
Do not assume that a general-purpose operational amplifier is rail-to-rail. Before finalizing the schematic, verify that every input remains within the LM2904AM8-13 common-mode range and that the output has enough swing for the load. Single-supply circuits also need an explicit ground-reference strategy. Check absolute maximum ratings, particularly the 36 V total supply limit, and add input attenuation or protection when sensor wiring can introduce transients beyond the amplifier's safe operating envelope.
Set the required closed-loop gain and bandwidth together rather than selecting resistors only to obtain a target gain. The 700 kHz gain-bandwidth product becomes less available as closed-loop gain rises, and excessive capacitive loading can affect settling and stability. Use the manufacturer's stability and output-capacitance guidance, add an isolation resistor where appropriate, and evaluate transient response with the real source impedance and load. Keep sensitive high-impedance inputs short and use guarding when leakage is significant.
コンプライアンス情報
The manufacturer datasheet describes the LM2904 family and its electrical operation, but no explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations were identified. AEC-Q100 qualification is not indicated for this general-purpose amplifier.
