LM248D - 36V Quad 1MHz Op Amp | STMicroelectronics
部品番号: LM248D ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
LM248D 概要
An operational amplifier is a voltage-feedback amplifier used in the amplifier-IC hierarchy. Its high open-loop gain, differential input, and feedback network enable accurate gain, buffering, summation, filtering, and impedance conversion. The LM248D follows the familiar UA741-style architecture, making it suitable where conventional, low-cost general-purpose amplification is preferred over precision or high-speed alternatives.
The main feature set includes four amplifiers per package, internal compensation, operation from dual or single supplies within a 36 V limit, and a 1 MHz gain-bandwidth product. The STMicroelectronics product description identifies the device as a standard general-purpose four-circuit amplifier in a 14-SO package. The TI page identifies the LM248 family as a quad, 36 V, 1 MHz operational amplifier with -25°C to +85°C operation.
Because the four amplifiers are independent, a single package can implement multiple stages or channels in analog systems. Internal compensation removes the need for an external compensation network in standard closed-loop applications. The device is best suited to moderate-frequency, moderate-precision signal paths rather than precision measurement or high-speed communication circuits.
Typical applications include audio preamplification, sensor signal conditioning, instrumentation, industrial control interfaces, and general-purpose analog buffers. Designers should verify the exact supply, input common-mode, output swing, slew, and offset limits against the manufacturer datasheet before finalizing a circuit.
For PCB implementation, maintain short analog traces, provide stable supply bypassing, and observe the datasheet's input and output common-mode limits. This page combines verified manufacturer and distributor information with selection guidance, alternatives, and practical design considerations.
ドロップイン代替品: LM248D — 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。
クイック比較ツール — 並列比較する代替部品を選択:
LM248D
✅ ドロップイン✓ 在庫あり
価格はお問い合わせください
データシートを見る →LM348D
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LM348DR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LM348DRG4
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LM248D/NOPB
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LM248D 最大定格＆電気的特性
| Amplifier Type | Quad general-purpose operational amplifier |
| Number of Amplifiers | 4 independent amplifiers |
| Maximum Supply Voltage | 36 V |
| Gain-Bandwidth Product | 1 MHz |
| 動作温度範囲 | -25 °C to +85 °C |
| パッケージ | 14-SO |
| Circuit Type | Standard general-purpose amplifier |
| Compensation | Internally compensated |
| Architecture | Four independent high-gain amplifiers |
| 実装タイプ | Surface mount |
LM248D 14-so ピン配置ガイド
LM248D (14-so パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: LM248D.
詳細は データシート をご参照ください。
主な用途
LM248D の用途: 6 件s: Audio Preamplification, Sensor Signal Conditioning, Industrial Control Interfaces, Analog Instrumentation, Active Filtering, Power Supply Feedback and Monitoring.
Audio Preamplification
The LM248D fits general audio preamplifier and mixer stages because its four independent, internally compensated amplifiers provide flexible channel allocation in one 14-SO package. The verified 1 MHz gain-bandwidth product supports moderate audio-band signal paths, while the 36 V maximum supply gives designers headroom for conventional dual-supply circuits. Use each channel with suitable input and feedback networks, and verify output swing, slew rate, noise, and load drive from the manufacturer datasheet before selecting resistor and capacitor values.
おすすめ
Sensor Signal Conditioning
The LM248D is suitable for buffering and conditioning outputs from slow industrial sensors because it provides four independent, high-gain, internally compensated amplifier channels. The 1 MHz gain-bandwidth product is adequate for many temperature, pressure, position, and level-sensing interfaces when the signal bandwidth is well below the amplifier limit. The circuit must remain inside the verified input common-mode and output-swing limits, which are not present in the supplied excerpts and must be obtained from the datasheet.
おすすめ
Industrial Control Interfaces
The LM248D can be used in industrial control and monitoring interfaces that require several low-speed analog functions on one board. Four independent channels allow input conditioning, error amplification, active filtering, and output buffering to share a single package. Its internally compensated design simplifies conventional feedback networks, while the 36 V supply rating supports compatible industrial rails when all absolute maximum ratings are respected. Validate noise immunity, grounding, and common-mode behavior in the final enclosure and power-supply environment.
おすすめ
Analog Instrumentation
The LM248D is a practical choice for instrumentation front ends that need several general-purpose amplifier functions without using four separate packages. Its 1 MHz gain-bandwidth product is appropriate for many low-frequency measurement and control loops, while the four-channel architecture helps reduce board area. Accuracy depends on the actual input offset, bias current, noise, common-mode range, and output swing, so these values must be checked in the manufacturer datasheet rather than inferred from the product-family description.
おすすめ
Active Filtering
The LM248D can implement active low-pass, high-pass, or other feedback-based filter stages when signal bandwidth is moderate and the required noise and distortion are within its general-purpose capability. The internal compensation removes external compensation components in standard configurations, allowing the design to concentrate on resistor and capacitor selection. Verify the amplifier’s gain-bandwidth product, slew behavior, output loading, and stability with the selected filter topology rather than assuming a universal response.
おすすめ
Power Supply Feedback and Monitoring
The LM248D can serve as an error amplifier or signal amplifier in low-bandwidth power-supply monitoring and feedback systems where the operating point remains within the device’s supply and common-mode limits. Its four independent channels allow one channel to monitor a reference, another to amplify a sense signal, and additional channels to provide buffering or gain stages. The 36 V maximum supply is useful for higher-voltage control systems, but the exact input/output limits and stability requirements must be confirmed from the datasheet.
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: LM248D — 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 | LM248D | LM348D | LM348DR | LM348DRG4 | LM248D/NOPB |
|---|---|---|---|---|---|---|
| Package | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC |
| Brand | STMicroelectronics | Texas Instruments | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Number of Amplifiers | 4 | 4 | 4 | 4 | 4 | 4 |
主な差別化要因
- Four independent amplifier channels in one package （vs LM348D)
- Verified 36 V and 1 MHz family specification （vs LM348D)
- Internal compensation （vs LM348D)
- 14-SO package consolidation （vs LM248D)
設計ノート
Design the supply rails around the verified 36 V maximum rating while also checking the minimum operating supply, input common-mode range, output swing, and absolute maximum ratings in the manufacturer datasheet. Place the required bypass capacitors close to the LM248D supply pins and use a low-impedance return path. Do not assume the 36 V figure means every 36 V system condition is automatically supported.
Route each amplifier’s input, feedback, and output connections with short traces and keep sensitive input nodes away from power-switching nodes and high-current return paths. A common quad package can reduce board area, but crossing feedback and input routes between channels can increase coupling. Use a continuous ground plane unless the application requires specific isolation, and follow the manufacturer package footprint and pin drawing.
The verified excerpts do not provide the complete LM248D pinout, input range, output swing, offset, bias current, slew rate, or stability limits. Before releasing a PCB or production design, compare those parameters and every package pin against the current manufacturer datasheet. Do not infer pin assignments from the 14-SO package count or assume that a similarly named LM348 part is automatically interchangeable.
The LM248D is a general-purpose 1 MHz amplifier, not automatically a precision or high-speed device. For instrumentation, verify offset and bias-current requirements; for audio, verify output swing, slew rate, noise, and load capability; for higher-speed filtering, verify closed-loop stability and bandwidth. Choose a precision or high-speed amplifier instead when those requirements exceed the LM248D’s verified operating class.
コンプライアンス情報
The supplied verified excerpts do not state RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification status. AEC-Q100 is marked not_applicable because no automotive qualification claim was supplied; this field does not replace manufacturer documentation.
