OCA7220
OCA7220 is 3W Filterless Mono ClassD Audio Power Amplifier manufactured by Orient Chip.
Description
- Features
OCA7220 is a Anti-Crack Protection, ultra-low EMI, Monaural, 3W class D audio power amplifier. Anti-Crack Protection function can adjust system gain
M automatically by detecting the output Broken audio distortion. It is not only avoiding the speaker from the damage caused by overload output power, but also
O offering a fortable listening experience. OCA7220 use proprietary EEE (Enhanced
.C Emission Elimination) technology, significantly lower
EMI interference in the whole bandwidth. To 60cm audio line, there is more than 20d B margin, under the
P FCC standard. I OCA7220 no filter PWM modulation structure and built-in gain reduce the external ponents, PCB area, system costs, and simplifying the design.
H Up to 90% Efficiency fit for mobile phones and other portable audio products more.
-C OCA7220 built-in over current protection, thermal protection and low voltage malfunction prevention function, effectively protect chip in the abnormal
T working conditions from being damaged. OCA7220 provides 1.45mm
- 1.45mm WLCSP9 package, rated operating temperature range is
N -40 ℃ to 85 ℃ .ORIE
- Typical Application Circuit
- Anti-Crack Protection provides three operating modes:ACP1,ACP2,ACPOFF
- Ultra low EMI
- POP noise reduction function
- Maximum output
3W (THD+N=10%、VDD=5V、RL=4Ω)
- Distortion rate
THD+N=0.05%(output power=1W、VDD=5V)
- Filter free Class-D Structure
- Up to 90% efficiency
- High PSRR:-80d B(217Hz)
- Low Quiescent Current（2.8m A）
- Low shutdown current（<0.1u A）
- Operating Voltage Range:2.5V～5.5V
- Over-current protection function
- Thermal protection function
- UVLO.
- Package:WLCSP9,1.45mm- 1.45mm
- Applications
- Cellular Phone
- MP3/PMP
- GPS
- Digital Photo Frame
Figure 1.Differential input...
