TA2020-020

TECHNICAL INFORMATION B Stereo 20W (4Ω) Class-T Digital Audio Amplifier using Digital Power ProcessingTM Technology TA2020-020 September, 2000 General Description The TA2020-020 is a 20W continuous average two-channel Class-T Digital Audio Power TM Amplifier IC using Tripath’s proprietary Digital Power Processing technology. Class-T amplifiers offer both the audio fidelity of Class-AB and the power efficiency of Class-D amplifiers. Applications ¾DVD Players ¾Mini/Micro Component Systems ¾Automotive Audio ¾Computer / PC Multimedia ¾Cable Set-Top Products ¾Televisions ¾Battery Powered Systems Features ¾Class-T architecture ¾Single Supply Operation ¾“Audiophile” Quality Sound ¾0.03% THD+N @ 10W 4Ω ¾0.1% THD+N @12W 4Ω ¾0.18% IHF-IM @ 1W 4Ω ¾High Power ¾13W @ 8Ω, 10% THD+N ¾23W @ 4Ω, 10% THD+N ¾38W EIAJ* VDD=14.4V @ 4Ω *saturated square wave output Benefits ¾Fully integrated solution with FETs ¾ Easier to design-in than Class-D ¾ Reduced system cost with no heat sink ¾Dramatically improves efficiency versus Class-AB ¾Signal fidelity equal to high quality linear amplifiers ¾High dynamic range compatible with digital media such as CD, DVD, and internet audio ¾High Efficiency ¾88% @ 12W 8Ω ¾81% @ 20W 4Ω ¾Dynamic Range = 103 dB ¾Up to 2X25Wrms @ 4Ω, VDD=14.6V ¾Mute and Sleep inputs ¾Turn-on & turn-off pop suppression ¾Over-current protection ¾Over-temperature protection ¾Bridged outputs ¾32-pin SSIP package Typical Performance THD+N versus Out...