I2S digital power amplifier
ACM8815
ACM8815 is a MOSFET integrated, high efficiency, high power density, mono Channel Class-D audio amplifier with digital inputs. The application circuit requires few passives components to operate with 4.5V to 38V PVDD and AVCC supply, 3.3V or 1.8V DVDD supply. ACM8815 integrates 11mΩ Rdson MOSFET that can drive 1×200W output power into 4Ω within 10% THD+N without heatsink required. ACM8815 features one novel PWM modulation architecture, which adjusts PWM common duty cycle during start-up phase to avoid startup pop click. Spread spectrum technology provides lower EMI radiated emissions. The advanced audio effect tuning capability inside ACM8815 provides one highly integrated solution. It allows turning on / off each block with highly free operations. Both pre and post BQs / volume helps a lot to maintain audio headroom. Furthermore, ACME patented 3+1 band DRC with peak & RMS detection are available to implement flexible and flat multiple band control. ACM8815 Class-H Control provides a new scheme to improve the efficiency and reduce power dissipation for battery supply system.
