The OPA131UA Operational Amplifier, manufactured by Texas Instruments, is a general purpose, FET-input Operational Amplifier. It has low input offset voltage, low input bias current, bandwidth up to 1.5MHz, and high accuracy. It provides high-speed performance with very low distortion. It offers excellent voltage fidelity and power efficiency. The OPA131UA is suitable for use in wide range of digital and analog audio applications, such as signal processing, differential amplifiers, voltage follower, and current-to-voltage conversion. It is available in various small-sized packages, which make it ideal for designing portable applications.