Texas Instruments

OPA134PAG4

OPA134PAG4 Description

The OPA134PAG4 is an obsolete but highly regarded audio amplifier from Texas Instruments, part of the SoundPlus™ series. This through-hole mounted IC is designed for high-performance audio applications, offering a wide supply voltage range from 5 V to 36 V. It features a gain bandwidth product of 8 MHz, ensuring high-frequency performance suitable for demanding audio systems. The OPA134PAG4 also boasts a low input bias current of 5 pA and an input offset voltage of 500 µV, which contribute to its excellent signal integrity and low noise performance. With a slew rate of 20V/µs, it can handle fast signal transitions without distortion. The amplifier provides a supply current of 4mA and an output current per channel of 35 mA, making it efficient and capable of driving various loads. Packaged in a tube format, it is REACH unaffected and ROHS3 compliant, ensuring environmental and regulatory standards are met. Despite its obsolete status, the OPA134PAG4 remains a reliable choice for legacy systems and specific applications where its unique features are required.

OPA134PAG4 Features

• Wide Supply Voltage Range: Operates from 5 V to 36 V, providing flexibility in power supply requirements.
• High Gain Bandwidth Product: 8 MHz ensures high-frequency performance, making it suitable for high-fidelity audio applications.
• Low Input Bias Current: 5 pA minimizes the loading effect on the signal source, preserving signal integrity.
• Low Input Offset Voltage: 500 µV ensures accurate signal reproduction with minimal distortion.
• High Slew Rate: 20V/µs allows for fast signal transitions, crucial for transient response in audio systems.
• Efficient Power Usage: 4mA supply current ensures low power consumption, ideal for battery-operated or power-sensitive applications.
• Robust Output Capability: 35 mA output current per channel can drive various loads, including speakers and headphones.
• Environmental Compliance: REACH unaffected and ROHS3 compliant, ensuring regulatory standards are met.
• Packaging: Tube format provides robustness and ease of handling during assembly.

OPA134PAG4 Applications

The OPA134PAG4 is ideal for a range of audio-related applications due to its high performance and wide operating range. It is particularly well-suited for:

• High-Fidelity Audio Systems: Its low noise and high slew rate make it perfect for amplifying audio signals in high-quality sound systems.
• Professional Audio Equipment: Ideal for mixing consoles, studio monitors, and other professional audio gear where signal integrity is crucial.
• Consumer Electronics: Suitable for home theater systems, portable audio devices, and other consumer electronics requiring high-quality audio amplification.
• Industrial Applications: Its robustness and wide voltage range make it suitable for industrial audio systems, such as PA systems and intercoms.
• Legacy Systems: Despite being obsolete, its unique features make it a reliable choice for maintaining or upgrading existing systems where modern alternatives may not be compatible.

Conclusion of OPA134PAG4

The OPA134PAG4 from Texas Instruments is a versatile and high-performance audio amplifier, offering a combination of wide supply voltage range, low noise, and high slew rate. While it is now obsolete, its unique features and robust performance continue to make it a valuable component for specific applications and legacy systems. Its compliance with environmental and regulatory standards ensures it remains a viable option for engineers and designers in the electronics industry.