APA2012
3W Mono Class-D Audio Power Amplifier
With Auto-Recovering Short-Circuit Protection
Features
•
•
•
•
Operating Voltage: 2.4V-6V
Low Supply Current
– I
DD
=1.8mA at V
DD
=5V
– I
DD
=1.5mA at V
DD
=3.6V
Low Shutdown Current
– I
DD
=0.1µA at V
DD
=5V
Output Power
at 1% THD+N
– 1.40W, at V
DD
=5V, R
L
=8Ω
– 0.74W, at V
DD
=3.6V, R
L
=8Ω
– 2.51W, at V
DD
=5V, R
L
=4Ω
– 1.32W, at V
DD
=3.6V, R
L
=4Ω
at 10% THD+N
– 1.8W, at V
DD
=5V, R
L
=8Ω
– 0.91W, at V
DD
=3.6V, R
L
=8Ω
– 3.2W, at V
DD
=5V, R
L
=4Ω
General Description
The APA2012 is a mono, filter-free Class-D audio ampli-
fier available in a WLCSP package. The gain can be set-
ting by external input resistance. High PSRR and differ-
ential architecture provide increased immunity to noise
and RF rectification. In addition to these features, a fast
startup time and small package size make the APA2012
an ideal choice for both cellular handsets and PDAs.
The APA2012 is capable of driving 1.3 W at 5 V or 600 mW
at 3.6 V into 8
Ω.
The APA2012 is also capable of driving
4
Ω.
The APA2012 is designed with a Class-D architec-
ture and operating with highly efficiency compared with
Class-AB amplifier. It's suitable for power sensitive
application, such as battery powered devices. The filter-
free architecture eliminates the output filter, reduces the
external component count, board area, and system costs,
and simplifies the design.
The APA2012 provides thermal and over circuit protection.
•
•
•
•
•
– 1.62W, at V
DD
=3.6V, R
L
=4Ω
Less External Components Required
Fast Startup Time (4ms)
High PSRR: 75 dB at 217 Hz
Short-Circuit and Thermal Protection
9-Ball, 1.2mm x 1.2 mm Pitch WLCSP
Simplified Application Circuit
Applications
•
•
•
•
Mobile Phones
Handsets
PDAs
Portable multimedia devices
APA2012
OUTN
INN
Input
Signal
INP
Bias
Circuitry
VON
VOP
OUTP
SHUTDOWN
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright
©
ANPEC Electronics Corp.
Rev. A.3 - Oct., 2013
1
www.anpec.com.tw
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
