Features
Ultra low THD+N:0.007%
AB/D operate mode
Two NCN level：0.65w and0.85w
Unique RNS
High SNR:95dB
EEE Function, Greatly reduces EMI over the
full bandwidth
Excellent Pop-Click Suppression
No VREF capacitor
Pin compatible with AW8155(A) AW8145
One-pulse control
Filter-Free Class-D Architecture
High PSRR (75dB at 217Hz)
Low Shutdown Current (<0.1A)
Power Supply Range: 2.5V~5.5V
Over-Current Protection
Over-Temperature Protection
Small FCQFN 1.5mmX1.5mmX0.55mm-9L
Package
Applications
Cellular Phones
MP3/PMP
GPS
Digital Photo Frame
HAC ( Hearing Aid Compatibility )
General Description
The AW8155B is a non-crack-noise (NCN), ul-
tra-low-EMI, filter-free, AB/D output mode se-
lection, unique RNS technology, second gen-
eration Class-D audio amplifier. Ultra low
THD+N, Unique NCN function, which adjusts
the system gain automatically while detecting
the “Crack”distortion of output signal, protects
the speaker from damage at high power levels
and invites the user to bask in immense musical
enjoyment.
AW8155B NCN output power can be set to
0.65w or 0.85w for different speakers, this fea-
ture is embedded in order to protect speakers
from damage caused by an excessive sound
level.
The AW8155B features a unique RNS tech-
nology, which effectively reduces RF energy,
attenuate the RF TDD-noise, an acceptable
audible level to the customer.
The AW8155B features the EEE (Enhanced
Emission Elimination) function which greatly
reduces EMI over the full bandwidth. The
AW8155B achieves better than 20dB margin
under FCC limits with 24 inch of cable.
The filter-free PWM architecture and internal
gain setting reduces external components
count, board area consumption, system cost
and simplifies the design. The over-current,
over-temperature is prepared inside of the de-
vice.
The AW8155B is available in an ultra small
FCQFN 1.5mmX1.5mmX0.55mm-9L package.
The AW8155B is specified over the industrial
temperature range of -40℃to +85℃.
