Texas Instruments

OPA128SM

OPA128SM Description

The OPA128SM is a general-purpose operational amplifier (op-amp) from Texas Instruments, designed for a wide range of analog signal processing applications. This op-amp is part of the Difet® series, known for its high performance and reliability. The OPA128SM features a wide supply voltage range, from 10 V to 36 V, making it suitable for various power supply configurations. It offers a gain bandwidth product of 1 MHz, ensuring stable performance across a broad frequency spectrum. The device also boasts a low input bias current of 0.075 pA, which minimizes the loading effect on high-impedance sources. With a slew rate of 3 V/µs, the OPA128SM can handle fast signal transitions effectively. The op-amp is housed in a through-hole TO99-8 package, which is ideal for applications requiring robust mechanical stability and ease of installation.

OPA128SM Features

• Wide Supply Voltage Range: Operates from 10 V to 36 V, providing flexibility in power supply design.
• High Gain Bandwidth Product: 1 MHz ensures stable performance across a broad frequency range.
• Low Input Bias Current: 0.075 pA minimizes loading on high-impedance sources, preserving signal integrity.
• Fast Slew Rate: 3 V/µs allows for efficient handling of fast signal transitions.
• Low Input Offset Voltage: 140 µV ensures accurate signal processing with minimal error.
• High Output Current: 10 mA per channel supports driving high-current loads.
• Low Supply Current: 900 µA reduces power consumption, making it suitable for low-power applications.
• Robust Packaging: Through-hole TO99-8 package offers mechanical stability and ease of installation.
• Compliance: REACH unaffected and RoHS3 compliant, ensuring environmental and regulatory standards are met.

OPA128SM Applications

The OPA128SM is ideal for a variety of applications due to its versatile performance characteristics. It is particularly well-suited for:

• Signal Conditioning: Ideal for amplifying and conditioning weak signals in sensor interfaces and transducers.
• Audio Processing: Its low noise and distortion characteristics make it suitable for audio amplifiers and preamplifiers.
• Industrial Control Systems: The wide supply voltage range and robust packaging make it suitable for industrial automation and control systems.
• Medical Equipment: The low input bias current and high precision make it suitable for medical diagnostic equipment.
• Telecommunications: The high slew rate and bandwidth make it suitable for signal processing in telecommunication systems.

Conclusion of OPA128SM

The OPA128SM from Texas Instruments is a versatile general-purpose op-amp that offers a combination of high performance and reliability. Its wide supply voltage range, low input bias current, and fast slew rate make it suitable for a variety of applications, from signal conditioning to audio processing. The through-hole TO99-8 package ensures robust mechanical stability, making it ideal for industrial and medical applications. Despite being marked as obsolete, the OPA128SM remains a reliable choice for engineers seeking a high-performance op-amp with proven track record.