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SA3291 Datasheet(PDF) 3 Page - ON Semiconductor

Part # SA3291
Description  Preconfigured Wireless DSP System for Hearing Aids
PDF  20 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

SA3291 Datasheet(HTML) 3 Page - ON Semiconductor

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AYRE SA3291
www.onsemi.com
3
Figure 1. Hybrid Block Diagram
BLOCK DIAGRAM
21
19
2
22
1
3
17
16
15
4
18
11
12
13
10
20
M
U
X
A/D
A/D
128 bands
*
**
Σ
Σ
14
6
8
Wireless
Audio/Data
7
9
5
Adaptive
Directional
Microphone
or
FrontWave
Pre
Biquad
Filters
Frequency
Band
Analysis
Clock
Generator
Programming
Interface
MIC/TCOIL
COMP
Feedback
Canceller
Environmental
Classification
AGCO
Volume
Control
Post
Biquad
Filters
3 & 4
WDRC (1,2,4,6 or 8 Channels)
Noise Reduction (128 bands)
Graphic EQ (16 bands)
EEPROM
Data
Logging
Frequency
Band
Synthesis
Post
Biquad
Filters
1 & 2
Control
(MS/DIGVC)
Control
A/D
Wideband
Gain
Noise Generator
and Shaper
Cross
Fader
Acoustic
Indicators
POR Circuitry
Peak
Clipper
D/A
Hbridge
Voltage
Regulator
* If Input Mode = 1 mic omni, mic + telecoil, mic + DAI
** If Input Mode = 2 mic omni, rear only, directional



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