I2S digital power amplifier
ACM8816
ACM8816 is a GaN HEMT integrated, high efficiency, Mono
Channel Class-D audio amplifier with digital inputs. The
application circuit requires few passives components to
operate with 4.5V to 60V PVDD supply, 3.3V or 1.8V DVDD
supply. ACM8816 integrates 7mΩ Rdson GaN HEMT that can
drive 1×300W output power into 4Ω within 1% THD+N
without heatsink required.
ACM8816 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. It allows inductor free application with specified
output power situation with ACM8816.
The advanced audio effect tuning capability inside ACM8816
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.
ACM8816 Class-H Control provides a new scheme to
improve the efficiency and reduce power dissipation for
battery supply system.
