The TAS6424M-Q1 device is a four-channel digital-input Class-D audio amplifier that implements a 2.1 MHz PWM switching frequency enabling a cost-optimized solution in a very small PCB size, full operation down to 4.5 V for start/stop events, and exceptional sound quality with up to 40 kHz audio bandwidth. The output switching frequency can be set either above the AM band, which eliminates AM-band interferences and reduces output filtering and cost, or below the AM band to optimize efficiency. The device has a built-in load diagnostic function for detecting and diagnosing misconnected outputs as well as detection of AC-coupled tweeters to help to reduce test time during the manufacturing process. The TAS6424M-Q1 Class-D audio amplifier is designed for use in automotive head units and external amplifier modules. The device provides four channels at 27 W into 4 Ω at 10% THD+N and 45 W into 2 Ω at 10% THD+N from a 14.4 V supply. For pin compatible one, two and four-channel devices see the TAS6421-Q1, TAS6422-Q1, TAS6424L-Q1 and TAS6424-Q1. https://elecena.pl/product/30563039/automotive-45-w-2-mhz-4-ch-4-5-to-18-v-digital-input-class-d-audio-amplifier-w-load-dump-dkq-56-40-to-125 2026-08-03 https://elecena.pl/product/30563039/automotive-45-w-2-mhz-4-ch-4-5-to-18-v-digital-input-class-d-audio-amplifier-w-load-dump-dkq-56-40-to-125 2026-09-03