Texas Instruments

OPA643N/250

OPA643N/250 Description

The OPA643N/250 is a high-performance voltage feedback operational amplifier from Texas Instruments, designed for applications requiring exceptional speed and precision. This single-channel op-amp is housed in a compact SOT23-5 package, making it suitable for space-constrained designs. With a maximum supply voltage span of 11 V and a minimum of 9 V, the OPA643N/250 offers flexibility in power supply configurations. Its gain bandwidth product of 800 MHz and a slew rate of 1000 V/µs ensure high-frequency performance, making it ideal for applications such as high-speed signal processing and data acquisition systems.

OPA643N/250 Features

• High Gain Bandwidth Product: The OPA643N/250 boasts a gain bandwidth product of 800 MHz, enabling it to handle high-frequency signals with minimal distortion.
• Fast Slew Rate: With a slew rate of 1000 V/µs, this op-amp can quickly respond to input changes, ensuring accurate signal reproduction even at high frequencies.
• Low Input Bias Current: The input bias current is only 19 µA, which helps in maintaining high input impedance and reducing the loading effect on the signal source.
• Low Input Offset Voltage: An input offset voltage of 2.5 mV ensures high accuracy in signal processing, minimizing errors in precision applications.
• High Output Current: The OPA643N/250 can deliver up to 60 mA of output current per channel, making it capable of driving moderate to high load applications.
• Surface Mount Technology: The surface mount package type facilitates easy integration into modern PCB designs and supports automated assembly processes.
• Moisture Sensitivity Level: With an MSL rating of 1 (Unlimited), the OPA643N/250 is suitable for a wide range of environmental conditions without requiring special handling precautions.

OPA643N/250 Applications

The OPA643N/250 is well-suited for a variety of high-speed, high-precision applications, including:

• High-Speed Signal Processing: Ideal for applications requiring fast signal processing, such as in communication systems and radar signal processing.
• Data Acquisition Systems: Its high bandwidth and fast slew rate make it suitable for data acquisition systems that need to capture and process high-frequency signals accurately.
• Analog-to-Digital Converters (ADC) Drivers: The OPA643N/250 can be used as a driver for ADCs, ensuring that high-speed analog signals are accurately converted to digital form.
• Video Signal Processing: The high bandwidth and low distortion characteristics make it suitable for video signal processing applications, ensuring high-quality video output.
• Precision Measurement Equipment: The low input offset voltage and low input bias current make it suitable for precision measurement equipment where accuracy is critical.

Conclusion of OPA643N/250

The OPA643N/250 from Texas Instruments is a high-performance voltage feedback operational amplifier that excels in high-speed and high-precision applications. Its combination of a high gain bandwidth product, fast slew rate, and low input bias current makes it a standout choice for demanding applications in the electronics industry. Despite being marked as obsolete, the OPA643N/250 remains a reliable and robust solution for engineers looking to achieve high performance in their designs. Its compact SOT23-5 package and surface mount technology further enhance its appeal for modern, space-efficient PCB designs.