Texas Instruments

LM748CN

LM748CN Description

The LM748CN is a general-purpose operational amplifier (op-amp) designed by Texas Instruments, a leading manufacturer in the electronics industry. This op-amp is housed in a through-hole package, making it suitable for a variety of applications where robust and reliable performance is required. The LM748CN features a wide supply voltage range, from a minimum of 10 V to a maximum of 40 V, ensuring compatibility with different power supply configurations. It operates within a temperature range of 0°C to 70°C, making it suitable for use in environments with moderate temperature variations.

LM748CN Features

• Wide Supply Voltage Range: The LM748CN can operate with a supply voltage ranging from 10 V to 40 V, providing flexibility in power supply requirements.
• High Slew Rate: With a slew rate of 0.5 V/µs, the LM748CN can handle high-frequency signals effectively, ensuring minimal distortion in the output waveform.
• Gain Bandwidth Product: The 1 MHz gain bandwidth product allows for high-frequency operation, making it suitable for applications requiring wide bandwidth.
• Low Supply Current: The op-amp consumes only 1.8 mA of supply current, which is advantageous for power-sensitive applications.
• Low Input Bias Current: The low input bias current of 120 nA ensures minimal loading on the input sources, preserving signal integrity.
• Low Input Offset Voltage: The input offset voltage of 1 mV ensures accurate signal processing and minimal error in the output signal.
• Through-Hole Mounting: The through-hole package type is ideal for applications requiring robust mechanical stability and ease of assembly.
• Obsolete Status: While the LM748CN is marked as obsolete, it remains a reliable choice for legacy systems and applications where its specific characteristics are required.

LM748CN Applications

The LM748CN is well-suited for a variety of applications due to its general-purpose design and robust performance characteristics. Some specific use cases include:

• Signal Conditioning: The LM748CN can be used to amplify and condition signals in various electronic systems, ensuring that the signals are suitable for further processing or transmission.
• Audio Amplifiers: Its wide supply voltage range and high slew rate make it suitable for audio applications where high-fidelity signal reproduction is necessary.
• Transducer Interfaces: The low input bias current and low input offset voltage make the LM748CN ideal for interfacing with sensitive transducers, ensuring accurate signal conversion.
• Analog Filters: The op-amp can be used to design analog filters for signal processing applications, leveraging its gain bandwidth product for effective frequency response.
• Legacy Systems: Given its obsolete status, the LM748CN is particularly useful for maintaining and repairing legacy systems where modern alternatives may not be compatible.

Conclusion of LM748CN

The LM748CN is a versatile general-purpose operational amplifier that offers a wide range of technical specifications and performance benefits. Its wide supply voltage range, high slew rate, and low supply current make it suitable for a variety of applications, from signal conditioning to audio amplification. Despite its obsolete status, the LM748CN remains a reliable choice for engineers and technicians working with legacy systems or applications where its specific characteristics are required. Texas Instruments' reputation for quality and reliability further ensures that the LM748CN will continue to perform well in its intended applications.