TS421IST Integrated Circuits (ICs)

Linear amplifiers are used in a wide range of audio applications, including high-fidelity audio systems, digital audio systems, broadcast equipment, and professional recording systems. The TS421 is one such linear amplifier, and is widely used in studio and live sound applications. In this article, we’ll explore the TS421’s application field and how it works.

What is the TS421?

The TS421 is a high-power, high-performance audio amplifier manufactured by Texas Instruments. This uni-directional amplifier is designed to deliver high-quality, clean and reliable sound output, with wide frequency response and low distortion. It has a frequency range of 20Hz to 20kHz, with a total harmonic distortion (THD) of 0.02% at 1kHz.

Applications of the TS421

The TS421 amplifier is most commonly used in professional audio equipment, such as studio and live sound systems. Its low distortion and wide frequency response make it ideal for applications where accurate signal reproduction and quality sound reproduction are required.

This amplifier is also used in surround sound systems and TV speakers, as well as in mobile devices, where consistent and clean sound is essential. Additionally, the TS421 amplifier can be used in audio signals from home, car, and marine audio systems.

How Does the TS421 Work?

The TS421 works by increasing the gain of audio signals. It is a single-channel amplifier that uses a three-stage amplifier configuration to boost the audio signal. The first stage is a differential class-A amplifier, which eliminates distortion caused by contact misalignment. The second stage is an L-C bandpass filter, which reduces high-frequency distortion and maintains a high signal-to-noise ratio. The final stage is an output buffer, which protects the amplifier from input overload and minimizes output impedance mismatch.

The TS421 also features a dual-supply design, which allows for better power efficiency and greater power output. It also features a thermal protection circuit, which shuts off the amplifier in case of overheating.

Summing Up

The TS421 is a linear amplifier used in professional-grade audio systems, TV speakers, and mobile devices. It offers excellent sound quality and low distortion, making it ideal for applications where high-quality sound reproduction is required. The TS421 works by increasing the gain of audio signals and features a three-stage amplifier configuration with a dual-supply design for improved power efficiency and thermal protection.