LM248D - 36V Quad 1MHz Op Amp | STMicroelectronics
MPN： LM248D ✗ 停產LM248D 概覽
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.
直接替換替代品，適用於 LM248D — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
LM248D
✅ 直接替換聯絡詢價
查看資料表 →LM348D
✅ 直接替換📋 參考替代品（不在目錄中）
LM348DR
✅ 直接替換📋 參考替代品（不在目錄中）
LM348DRG4
✅ 直接替換📋 參考替代品（不在目錄中）
LM248D/NOPB
✅ 直接替換📋 參考替代品（不在目錄中）
LM248D 最大額定值與電氣特性
| Amplifier Type | Quad general-purpose operational amplifier |
| Number of Amplifiers | 4 independent amplifiers |
| Maximum Supply Voltage | 36 V |
| Gain-Bandwidth Product | 1 MHz |
| 工作溫度範圍 | -25 °C to +85 °C |
| 封裝 | 14-SO |
| Circuit Type | Standard general-purpose amplifier |
| Compensation | Internally compensated |
| Architecture | Four independent high-gain amplifiers |
| 安裝類型 | Surface mount |
LM248D 14-so 腳位配置指南
LM248D（14-so 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： LM248D.
請參閱 資料表 以查看完整腳位配置。
典型應用
LM248D 適用於 6 應用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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 LM248D — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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 |
主要差異化特點
- Four independent amplifier channels in one package (對比LM348D)
- Verified 36 V and 1 MHz family specification (對比LM348D)
- Internal compensation (對比LM348D)
- 14-SO package consolidation (對比LM248D)
設計說明
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.
合規資訊
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.
