LM248N - Quad 36V 1MHz Op Amp | Texas Instruments
MPN： LM248N ✓ 啟用中LM248N 概覽
An operational amplifier is an analog integrated circuit that uses high open-loop gain to amplify the difference between its input voltages. The LM248 belongs to the broader hierarchy of operational amplifier, analog amplifier, and semiconductor devices. Unlike a comparator, the LM248 is intended for linear signal amplification, while its overload protection and internally compensated design support practical feedback-based circuit implementation.
The LM248N combines a 1 MHz gain-bandwidth product with a slew rate of 0.5 V/µs, according to the verified product search results. Its input and output overload protection make it suitable for conventional op-amp stages connected to external resistors and feedback networks. The four independent circuits in the package can be assigned separately to instrumentation buffers, active filters, sensor interfaces, or voltage-feedback stages when circuit conditions meet the device requirements.
The LM248N is identified by the verified search data as a standard general-purpose amplifier in a 14-PDIP package. The product family is also described as designed to be interchangeable with industry-standard LM148, LM248, and LM348 devices. The verified distributor listing identifies the part as a four-circuit amplifier, confirming the quad-channel architecture and through-hole package format.
Typical applications include low-frequency analog signal conditioning, buffered sensor interfaces, audio and communications support circuits, general instrumentation, and multiple-channel analog systems. Because it is a bipolar-style general-purpose amplifier family, designers should verify supply voltage, input common-mode range, output swing, stability, and load conditions against the manufacturer datasheet before finalizing a design.
The primary design consideration is to follow the manufacturer’s recommended supply, biasing, feedback, and decoupling arrangements. Because no complete electrical characteristic table or application-specific circuit constraints were included in the verified data, unsupported values are marked for engineering follow-up rather than inferred. This page summarizes verified product identity, architecture, package, and application context alongside sourcing and replacement guidance.
This page synthesizes verified manufacturer and distributor information, drop-in replacement considerations, comparison fields, and practical engineering guidance for LM248N selection and PCB integration.
直接替換替代品，適用於 LM248N — 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。
LM348N
✅ 直接替換📋 參考替代品（不在目錄中）
LM248N 最大額定值與電氣特性
| Product Type | Quad operational amplifier |
| Number of Amplifier Channels | 4 |
| Maximum Supply Voltage | 36 V |
| Gain-Bandwidth Product | 1 MHz |
| Slew Rate | 0.5 V/µs |
| 工作溫度範圍 | -25°C to 85°C |
| Quiescent Current per Amplifier | 0.6 mA typical |
| Output Stage | Class AB output stage |
| Protection | Input/output overload protection |
| Compensation | Internally compensated |
| 封裝 | 14-pin PDIP |
| 安裝類型 | Through-hole |
| RoHS 狀態 | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
LM248N 14-pin pdip 腳位配置指南
LM248N（14-pin pdip 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： LM248N.
請參閱 資料表 以查看完整腳位配置。
典型應用
LM248N 適用於 7 應用s: General-Purpose Instrumentation, Sensor Signal Conditioning, Buffered Control and Analog Feedback, Audio and Communications Support, Power-Supply Monitoring and Conditioning, Active Filtering and Analog Processing, Industrial Control Interfaces.
General-Purpose Instrumentation
The LM248N fits low- to moderate-frequency instrumentation because it combines four independent amplifier channels with a 1 MHz gain-bandwidth product and 0.5 V/µs slew rate in one 14-pin PDIP. Each channel can implement voltage-following, non-inverting, or inverting stages when the external feedback network is selected correctly. The verified 36 V maximum supply rating provides headroom for suitably designed bipolar or single-supply circuits, although the complete supply limits must be confirmed from the datasheet. Engineers should also verify input common-mode range, output swing, offset, bias current, and load behavior for the measurement being performed.
推薦
Sensor Signal Conditioning
The LM248N can condition low-bandwidth sensor signals through buffering, gain amplification, filtering, and active-feedback stages. Its four-channel organization allows several independent sensor channels to share a package while keeping each amplifier isolated. The 1 MHz gain-bandwidth product and 0.5 V/µs slew rate are adequate for many slower measurement paths, but they do not replace a full input and output range check. For thermocouple, bridge, pressure, or current-sense interfaces, validate common-mode limits, offset behavior, noise, grounding, and protection against the sensor’s operating environment.
推薦
Buffered Control and Analog Feedback
The LM248N can serve as a buffered control element in analog feedback loops where several independent amplifier sections are convenient. Its Class AB output stage and overload-protection description support conventional feedback networks, while the internal compensation simplifies many voltage-feedback configurations. The design must still account for closed-loop gain, output swing, load, stability, and the time required to slew larger signals. The verified 36 V maximum rating is a constraint to observe, not a complete operating specification, so verify supply and common-mode conditions from the manufacturer datasheet.
推薦
Audio and Communications Support
The LM248N may be used in general audio or communications support circuits when the signal bandwidth is modest and the operating point satisfies the device’s electrical limits. Its 1 MHz gain-bandwidth product and 0.5 V/µs slew rate are concrete parameters for preliminary bandwidth and large-signal calculations. The quad package can provide separate gain, buffering, or filtering channels for a compact analog board. Designers should verify output swing into the intended load, input common-mode range, noise, distortion, supply configuration, and stability in the complete signal path before selecting it for a high-performance audio role.
推薦
Power-Supply Monitoring and Conditioning
The LM248N can be used to amplify, compare, and buffer low-bandwidth power-supply monitoring signals, provided the monitored voltage and current sensing signals remain within the verified common-mode and output limits. Its independent channels can monitor multiple rails or provide a buffered reference path. The 36 V maximum supply rating is relevant to higher-voltage industrial systems, but it should not be interpreted as permission to place arbitrary signals at that voltage on the inputs. Include input attenuation, filtering, and protection where needed, and verify thermal and supply conditions in the manufacturer documentation.
推薦
Active Filtering and Analog Processing
The LM248N is suitable for basic active-filter and analog-processing functions where the selected closed-loop bandwidth remains below the verified 1 MHz gain-bandwidth product. Four independent channels allow a cascade or parallel implementation of first- and second-order sections, while the internally compensated architecture supports many conventional feedback arrangements. Filter design must account for op-amp gain-bandwidth limits, slew rate, noise gain, component tolerances, and load capacitance. The supplied data does not specify exact stability limits or output capability, so simulation against the manufacturer model is recommended before finalizing a precision filter.
推薦
Industrial Control Interfaces
The LM248N can support low-bandwidth industrial control and interface circuits where multiple analog functions must be grouped in a through-hole package. Its four independent channels can handle gain stages, buffer stages, and simple active filtering while the 14-pin PDIP simplifies through-hole assembly and inspection. The -25°C to 85°C verified operating range covers many commercial and industrial environments, but the exact electrical limits must still be checked against the application’s supply, noise, temperature, and reliability requirements. Add input and output protection where transients or miswiring are possible.
推薦
推薦產品摘要
工程參考資料，適用於 LM248N — 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 | LM348N |
|---|---|---|
| Package | 14-pin PDIP | 14-pin PDIP - same package |
| Brand | Texas Instruments | Texas Instruments |
| Number of Amplifier Channels | 4 | 4 |
主要差異化特點
- Four independent amplifier channels in one package (對比LM348N)
- Verified 1 MHz gain-bandwidth product (對比LM348N)
- Verified -25°C to 85°C operating range (對比LM348N)
設計說明
Use a through-hole footprint that matches the verified 14-pin PDIP package and verify pin numbering against the manufacturer datasheet before fabrication. Keep each amplifier channel’s feedback resistors close to the relevant package pins to reduce parasitic feedback and high-frequency instability. Place supply bypass capacitors near the package power pins, and route ground returns directly to the amplifier ground pins rather than through long shared paths.
Do not treat the verified 36 V maximum supply rating as the complete operating range. Check the LM248N datasheet for allowed supply configurations, input common-mode limits, output voltage swing, and absolute maximum ratings. In particular, verify that sensor signals, source impedances, and output loads remain inside the limits for the selected feedback gain. Missing specifications in the supplied search data require engineering follow-up rather than assumptions.
The verified 1 MHz gain-bandwidth product and 0.5 V/µs slew rate make the LM248N appropriate for many low-bandwidth analog stages, but closed-loop bandwidth also depends on noise gain and feedback topology. Avoid placing large capacitive loads directly at the output unless the load behavior is supported by the datasheet. For higher-frequency or high-capacitance nodes, buffer the output, add an isolation resistor where appropriate, and validate stability with simulation or measurements.
合規資訊
The supplied verified search data does not include material compliance declarations for LM248N. Obtain current manufacturer or authorized-distributor documentation before making a compliance determination.