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SA3291A-E1 Datasheet(PDF) 1 Page - ON Semiconductor

No. de pieza SA3291A-E1
Descripción Electrónicos  Preconfigured Wireless DSP System for Hearing Aids
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Fabricante Electrónico  ONSEMI [ON Semiconductor]
Página de inicio  http://www.onsemi.com
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SA3291A-E1 Datasheet(HTML) 1 Page - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2015
March, 2015 − Rev. 7
1
Publication Order Number:
SA3291/D
AYRE SA3291
Preconfigured Wireless DSP
System for Hearing Aids
Description
Ayre
t SA3291 is a preconfigured wireless DSP system utilizing
Near−Field Magnetic Induction (NFMI) technology.
Ayre SA3291 enables hearing aids to wirelessly synchronize
program modes and volume control and stream telecoil signals from
one hearing aid to the other. When coupled with a relay device, Ayre
SA3291 enables features such as stereo audio streaming via
Bluetooth® in addition to remote control functionality.
Featuring iSceneDetect
t environmental classification, adaptive
noise reduction, superior feedback cancellation, fully automated and
adaptive microphone directionality, and up to 8−channel WDRC, Ayre
SA3291 is ideal for high−end, full−featured wireless products.
Binaural Synchronization − The binaural synchronization feature
allows two hearing aids to wirelessly synchronize adjustments such as
program modes or volume control. By working together as one
system, user control is simplified.
Binaural Telecoil − The binaural telecoil wirelessly streams telecoil
audio signals from one hearing aid to the other. This enables hearing
aid users to hear phone calls in both ears, improving speech
intelligibility.
Stereo Audio Streaming − Stereo audio signals can be streamed
wirelessly from a relay device to hearing aids equipped with Ayre
SA3291. A relay device can use Bluetooth or other far−field wireless
technology to wirelessly connect with TVs, music players, mobile
phones or other audio sources.
Acoustic Environment Classification − The iSceneDetect 1.0
environmental classification algorithm is capable of analyzing the
hearing aid wearer’s acoustic environment and automatically
optimizes the hearing aid to maximize comfort and audibility.
iLog
] 4.0 Datalogging − Enables the recording of various hearing
aid parameters such as program selection, volume setting and ambient
sound levels. The sampling interval can be configured to record from
every 4 seconds up to once every 60 minutes. The fitting system can
present the data to help the fitting specialist fine tune the hearing aid
and counsel the wearer.
EVOKE
[ Advanced Acoustic Indicators − Allows
manufacturers to provide more pleasing, multi−frequency tones
simulating musical notes or chords to indicate events such as program
or volume changes.
Automatic Adaptive Directionality − The automatic Adaptive
Directional Microphone (ADM) algorithm automatically reduces the
level of sound sources that originate from behind or to the side of the
hearing aid wearer without affecting sounds from the front. The
algorithm can also gather input from the acoustic environment and
automatically select whether directionality is needed or not,
translating into additional current savings.
Adaptive Feedback Cancellation − Automatically reduces
acoustic feedback. It allows for an increase in the stable gain while
minimizing artifacts for music and tonal input signals.
www.onsemi.com
32 PAD
HYBRID
CASE TBD
PAD CONNECTION
MARKING DIAGRAM
SA3291A−E1
XXXXXX
SA3291A = Specific Device Code
E1
= RoHS Compliant Hybrid
XXXXXX = Work Order Number
(Bottom View)
GND
VIN1
PGND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
32
27
28
29
30
31
TIN
VREG
VC
GPIO7/
DIGVC
L2
NGND
L1
NVB
VBP
DAI
VB
GPIO0/
MS1
GPIO1/
MS2
PCSDA
PCCLK
OUT−
OUT+
MGND
VIN2
See detailed ordering and shipping information on page 17 of
this data sheet.
ORDERING INFORMATION


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