LX1721 Datasheet | Microsemi

DESCRIPTION KEY FEATURES . Microsemi . C OM The LX1721/1722 is a monolithic high performance Class-D stereo controller IC designed for high efficiency or space constrained audio requirements such as portable or battery operated products, automotive amplifiers, and multi-channel multimedia puter and video game applications. This high frequency, full audio bandwidth switching power amplifier controller offers dramatically improved performance over Linfinity’s previous generation amplifier products. Enhancements include higher output power, better SNR, lower noise floor, and reduced THD. bined with output power MOSFET’s and an output filter, the LX1721/1722 is a plete Class-D audio solution. A plete audio amplifier module is available to quickly evaluate the LX1721 or LX1722 stereo controller. Simply connect the amplifier to the power source, audio signal, and speakers. Reference designs support a variety of requirements including multi channel systems, subwoofers, satellite / subwoofer binations and various speaker loads (2Ω, 4Ω, 8Ω). The versatile amplifier solution can easily be adjusted for frequency response, optimized for efficiency and performance, or designed to minimize PCB area and ponent count. The LX1721/1722 is available in a space saving 44-pin QSOP package. (Continued Next Page) IMPORTANT: For the most current data, consult MICROSEMI’s website: http://.microsemi. PRODUCT HIGHLIGHT 7V - 25V Channel 1 - Integrated Switching Class-D Stereo Controller IC - Full 20Hz-20k Hz Audio Bandwidth - High Fidelity (LX1721) Or High Power (LX1722) Versions Available - Single Supply Operation - THD+N <0.06% Typical (1Wrms, 1k Hz, 4Ω) - Maximum Efficiency 80%85% - Output Power >60Wrms per Channel (LX1722, 4Ω, 1% THD+N) - PSRR - 70d B Typical - Differential Input To Minimize Noise Effects - Supports Multi-Channel Systems - plete LXE1721or LXE1722 Amplifier Evaluation Module Available - 44-Pin QSOP Package APPLICATIONS - Multimedia Speakers - Surround Sound Game...