OCA7220A.pdf 데이터시트 (총 3 페이지) - 파일 다운로드 OCA7220A 데이타시트 다운로드

No Preview Available !

OCA7220A
Ultra Low EMI, 3W Filter-less Mono Class-D Audio Power Amplifier
With Anti-Crack Protection
General Description
OCA7220A is a Anti-Crack Protection, ultra-low
EMI, Monaural, 3W class D audio power amplifier.
Anti-Crack Protection function can adjust system gain
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
offering a comfortable listening experience.
OCA7220A use proprietary EEE (Enhanced
Emission Elimination) technology, significantly lower
EMI interference in the whole bandwidth. To 60cm
audio line, there is more than 20dB margin, under the
FCC standard.
OCA7220A no filter PWM modulation structure
and built-in gain reduce the external components,
PCB area, system costs, and simplifying the design.
Up to 90% Efficiency fit for mobile phones and other
portable audio products more.
OCA7220A built-in over current protection,
thermal protection and low voltage malfunction
prevention function, effectively protect chip in the
abnormal working conditions from being damaged.
OCA7220A provides 1.37mm * 1.37mm
WLCSP9 package, rated operating temperature
range is -40 to 85 .
Features
Anti-Crack Protection provides three operating
modes:ACP1,ACP2,ACPOFF
Ultra low EMI
POP noise reduction function
Maximum output 3W
(THD+N=10%VDD=5VRL=4Ω)
Distortion rate
THD+N=0.05%(output power=1WVDD=5V)
Filter free Class-D Structure
Up to 90% efficiency
High PSRR:-80dB(217Hz)
Low Quiescent Current2.8mA
Low shutdown current<0.1uA
Operating Voltage Range:2.5V5.5V
Over-current protection function
Thermal protection function
Under-Voltage Lock-Out.
Package:WLCSP9,1.37mm*1.37mm
Applications
Cellular Phone
MP3/PMP
GPS
Digital Photo Frame
Typical Application Circuit
Figure 1.Differential input application
Page1 - 3
Rev. 1.1 Feb .27, 2018
源于灿瑞 磁传天下

No Preview Available !

OCA7220A
Ultra Low EMI, 3W Filter-less Mono Class-D Audio Power Amplifier
With Anti-Crack Protection
Pin Configuration
Figure 2.Single-ended input application schematic
OCA7220A /WLCSP9 (Top View)
Pin Function Description:
NO. Name
A1 INP
A2 VDD
A3 VOP
B1 AGND
B2 VREF
B3 PGND
C1 INN
C2 CTRL
C3 VON
Figure3, Pin Assignment
Function
Positive input terminal
Power supply
Positive output terminal
GND for analog circuits
Analog reference
GND for power
Negative input terminal
Power down and ACP control terminal
Negative output terminal
Page2 - 3
Rev. 1.1 Feb .27, 2018
源于灿瑞 磁传天下

No Preview Available !

Ordering Information
OCA7220A
Ultra Low EMI, 3W Filter-less Mono Class-D Audio Power Amplifier
With Anti-Crack Protection
注:想进一步了解产品咨询,请直接点击申请样品。我们会第一时间联系您!谢谢!
Page3 - 3
Rev. 1.1 Feb .27, 2018
源于灿瑞 磁传天下