The AD199x amplifiers, including the AD1990, AD1992, and AD1994, are single-chip devices containing an integrated stereo ∑∆ modulator and stereo "bridge-tied" load (BTL) power stage. The AD199x amplifiers deliver audiophile sound quality with at least 50 % less heat than traditional linear amplifiers. The device's breakthrough performance is achieved through the closed loop integration of a Sigma-Delta modulator with a bridge drive circuit and high power output stage. In addition to achieving superior audio performance, this novel ∑∆ architecture minimizes radiated and conducted EMI and RF emissions. Output Power AD1990: 2 × 5W AD1992: 2 × 10W AD1994: 2 × 25W (1 × 50W) Applications * Automotive Amplifiers * Flat Panel Televisions * PC Audio Systems * Mini Components * Integrated Stereo ∑∆ Modulator and Power Stage * 0.005% THD+N * 101.5 dB Dynamic Range * PSRR>65dB * RDS-ON < 0.3 Ω (per transistor) * Efficiency >80% @ 5 W/6 Ω