STMicroelectronics

UA748CD

UA748CD Description

The UA748CD is a general-purpose operational amplifier (op-amp) designed by STMicroelectronics, a leading manufacturer in the electronics industry. This op-amp is housed in an 8SOIC package, making it suitable for surface-mount applications. While the product is now obsolete, it remains a notable component in the realm of linear amplifiers due to its robust performance and versatile applications.

UA748CD Features

• Supply Voltage Range: The UA748CD operates within a wide supply voltage range of 10 V to 40 V, providing flexibility in various power supply configurations.
• Gain Bandwidth Product: With a gain bandwidth product of 1 MHz, this op-amp ensures stable performance across a broad range of frequencies, making it suitable for general-purpose applications.
• Low Input Bias Current: The input bias current is as low as 70 nA, which minimizes the loading effect on the input signal source, ensuring high input impedance and accurate signal processing.
• High Slew Rate: The UA748CD boasts a slew rate of 0.5 V/µs, enabling it to handle fast-changing signals effectively, thus maintaining signal integrity in dynamic applications.
• Low Input Offset Voltage: The input offset voltage is maintained at 2 mV, ensuring minimal error in signal amplification and enhancing the accuracy of the output signal.
• Supply Current: The supply current is a modest 1.8 mA, making the UA748CD energy-efficient and suitable for low-power applications.
• Output Current: The op-amp can deliver up to 30 mA per channel, providing sufficient drive capability for a variety of loads.
• Compliance and Packaging: The UA748CD is REACH unaffected and RoHS3 compliant, ensuring environmental sustainability. It is packaged in a tube format, which is ideal for bulk handling and storage.

UA748CD Applications

The UA748CD is ideal for a wide range of applications due to its general-purpose design and robust performance characteristics. Some specific use cases include:

• Signal Conditioning: The low input bias current and low input offset voltage make the UA748CD suitable for conditioning weak signals, ensuring accurate amplification and minimal distortion.
• Analog Filters: Its gain bandwidth product and slew rate allow it to be used in analog filter designs, providing stable and reliable performance across various frequency bands.
• Sensor Interfaces: The high input impedance and low bias current are beneficial for interfacing with sensors, ensuring that the input signal is not compromised by the op-amp's loading effects.
• Power Amplifiers: The ability to deliver up to 30 mA per channel makes it suitable for driving small to medium-sized loads, making it ideal for use in power amplifier circuits.
• Educational and Laboratory Use: Due to its general-purpose nature and wide operating range, the UA748CD is often used in educational settings and laboratories for teaching and experimentation purposes.

Conclusion of UA748CD

The UA748CD, despite being an obsolete product, remains a valuable component in the electronics industry due to its versatile performance and wide range of applications. Its low input bias current, high slew rate, and wide supply voltage range make it suitable for various general-purpose applications. The UA748CD's compliance with environmental standards and its surface-mount packaging further enhance its appeal. While newer models may offer advanced features, the UA748CD continues to be a reliable choice for designers and engineers seeking a robust and versatile operational amplifier.