TAS6421-Q1 device is a mono-channel digital-input Class-D Burr-Brown™ audio amplifier that implements a 2.1 MHz PWM switching frequencyenabling a cost-optimized solution for a very small PCB size, full operation down to 4.5 V forstart/stop events, and exceptional sound quality with up to 40 kHz audio bandwidth. TAS6421-Q1 isfootprint and pin-compatible with TAS642x-Q1 family devices to allow for the flexibility to easilysupport multiple system configurations with minimal redesign effort.
The output switching frequency can be set either above the AM band, which eliminatesAM-band interferences and reduces output filtering and cost, or below the AM band to optimizeefficiency. The device has a built-in load diagnostic function for detecting and diagnosingmisconnected outputs as well as detection of AC-coupled tweeters.
TAS6421-Q1 provides one channel at 27 W into 4 Ω at 10% THD+N, 45 W into 2 Ω at 10%THD+N from a 14.4 V supply or 75 W into 4 Ω at 10% THD+N from a 25 V supply.
For pin compatible two- and four-channel devices see theTAS6422-Q1,TAS6424L-Q1,TAS6424M-Q1 andTAS6424-Q1.