CLASS AB/D OPTIONAL SECOND GENERATION CLASS-D AUDIO AMPLIFIER
DESCRIPTION
The UTC UPA8155 is a second-generation Class D audio
amplifier with crack-free noise (NCN), ultra-low THD+N, no filter,
AB/D output mode selection for the most comfortable listening
experience for customers.
The UTC UPA8155 NCN output power can be set for different
speakers, this feature is to protect the speaker from damage
caused by excessive sound levels.
The filter-less PWM architecture and internal gain Settings
reduce the number of external components, board area
consumption, system costs, and simplify design. Overcurrent and
over-temperature are prepared inside the device.
FEATURES
* Power Supply Range: 2.5V~5.5V
* Low Shutdown Current (<0.1µA)
* AB/D Operate Mode
* Two NCN Level: 0.65W and 0.85W
* Ultra Low THD+N: 0.06%
* Over-Temperature Protection
* Excellent Pop-Click Suppression
* One-Pulse Control
* Over-Current Protection
* Filter-Free Class-D Architecture
* High PSRR (-70dB at 217Hz) |