GA3285 Datasheet, PDF (1/16 Pages) ON Semiconductor – Pre-configured DSP System

INSPIRIA GA3285
Pre-configured DSP System
for Hearing Aids
Description
The INSPIRIA GA3285 is ON Semiconductor’s premiere DSP
product designed on an advanced hardware platform. Combining the
power and capabilities of the hardware platform together with
Advanced Research, the Inspiria GA3285 delivers cutting−edge
features and high performance.
The hardware platform is ON Semiconductor’s industry−leading
programmable digital signal processing platform. Advanced
Research, developed by ON Semiconductor, is a methodology that
couples state−of−the−art acoustic algorithms to ensure high−fidelity
digital sound quality.
The Inspiria GA3285 iLogt Datalogging feature records various
parameters every 15 minutes during use of the device. Once these
parameter values are read from the device, they can be used to counsel
the user and fine tune the fitting.
The Inspiria GA3285’s Adaptive Noise Reduction monitors noise
levels independently in 128 individual bands and employs advanced
psychoacoustic models to provide user comfort.
Based on a phase cancellation method, Inspiria GA3285’s adaptive
feedback reduction algorithm provides an increase in added stable
gain. It features rapid adjustment for dynamic feedback situations and
resistance to tonal inputs.
ON Semiconductor’s Automatic Adaptive Directional Microphone
(ADM) algorithm is a two−microphone processing scheme. The
algorithm automatically reduces the level of sound sources that
originate from behind or the side of the hearing−aid wearer without
affecting sounds from the front by adjusting the null in the microphone
polar pattern to minimize the noise level at the output of the ADM. To
reduce current consumption, the algorithm can switch automatically
between 1 mic omni and ADM depending on the acoustic
environment.
The Inspiria GA3285 is equipped with a noise source that can be
used in treating tinnitus. The Tinnitus Treatment noise can be shaped
and attenuated and then summed into the audio path either before or
after the volume control.
The Narrow−band Noise Stimulus feature allows the user to
generate stimuli from the device that can be used for in situ
audiometry.
In addition to these adaptive algorithms, the Inspiria GA3285 also
supports the following features: up to 8 channel WDRC,
FRONTWAVE^® directional processing, cross fading between audio
paths for click−free memory changes, 16−band graphic equalizer, 8
generic biquad filters (configurable as parametric or other filter types),
programming speed enhancements, optional peak clipping, flexible
compression adjustments, programmable tones for memory change
and low battery indicators, volume control, and industry−leading
security features to avoid cloning and software piracy.
www.onsemi.com
16 PAD
HYBRID
CASE TBD
FMIC
RMIC
VC
SDA
GND
PGND
PAD CONNECTION
MGND
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VREG
TIN
DAI
MS
MS2
VB
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OUT+ OUT−
(Bottom View)
VBP
MARKING DIAGRAM
GA3285A−E1
XXXXXX
GA3285A = Specific Device Code
E1
= RoHS Compliant Hybrid
XXXXXX = Work Order Number
ORDERING INFORMATION
See detailed ordering and shipping information on page 14 of
this data sheet.
© Semiconductor Components Industries, LLC, 2015
1
August, 2015 − Rev 3
Publication Order Number:
GA3285/D