A2323
AUDIO AMPLIFIER
AiT Semiconductor Inc.
www.ait-ic.com
2.65W CLASS-D AUDIO POWER AMPLIFIER
EEE technology
The A2323 design with dedicated EEE technology, engaging full scale in High Frequency transient skipping
signal, reduced great level EMI jamming in full frequency span range. For 60cm audio cable, over more than
20dB level range in FCC standard, as figure 5 diagrams.
Figure 5 EMI Diagram of testing frequency spectrum
Efficiency
The switching way of output transistor decided the high efficiency of class-D power amplifier. In class-D power
amplifier, the output transistor acting like a current switching regulator, basically switching consumption power
can be neglected in switching process. The main consumption power is generated by the MOSFET
conducting resistance and the I²R created by Power source current. The A2323 efficiency can be achieved
90%.
Automatic protection recovers
While the output pin short with main power or ground, or short between the output lead, over current protected
circuit will shut off the chip for preventing damage. After recovery from shorting circuit, the A2323 was
operating automatically. When the chip operating temperature over the thermal shut down temperature
threshold(160℃), the chip will be shut down. When the operating temperature down to recover temperature
threshold(125℃), the A2323 continue to operating normally.
REV3.0
- MAY 2013 RELEASED, APR 2016 UPDATED -
- 14 -
AITSEMI [ AiT Semiconductor ]
