general description
the a7013 is a cost-effective 2.5w mono filter-free
class-d audio power amplifier, designed with apexone
proprietary efstm (enhanced feedback structure)
technology and architecture. the device can drive
speakers as low as 4ω. 
apexone efstm technology has the advantage over
traditional pwm class d audio power amplifier and
increases the performance  dramatically for audio
solutions. it reduces thd and emi effectively and offers
low distortion across both the wide audio output power
range and the full audio frequency domain. the device
utilizes a fully differential architecture and a full-bridged
output.
the a7013 features high psrr of 81db, low thd+n of
0.02%, and higher than 88db snr. short circuit and thermal
overload protection prevents the devices from being damaged
during over current conditions. integrated internal mute
control function suppresses pop/click sound. the high
efficiency of the a7013 eliminates the need of external heat
sinks and extends battery life.
 
key features
z  2.5w into 4ω load (thd+n=10%, vcc= 5v)
z  0.022% thd+n  
 z  high efficiency
91% at 5v, 1w with 8ω load
88% at 3.6v, 400mw with 8ω load
z  low quiescent current of 2.3ma
z  low shutdown current of 0.04ua
z  adjustable gain by external resistor.
z  81db psrr at 217hz
z  internal mute function to reduce pop noise
z  2.5v to 5.5v single supply operation
z  thermal and short-circuit protection
z  optimized pwm output stage eliminating lc
output filter
z  proprietary technology to reduce emi
 
applications
z  mobile phone
z  mp4
z  pda
z  portable dvd
z  notebook
 
ordering information
 
part no  package package qty temp range
a7013 m wlcsp 3000pcs/reel -40°c to 85°c
a7013 g dfn  3000pcs/reel -40°c to 85°c