INSPIRIA SA3286
Pre-configured DSP System
for Hearing Aids
INSPIRIA SA3286 features iSceneDetect
t
environmental
classification, 128−bands of noise reduction, superior feedback
cancellation and built−in feedback path measurement capabilities.
The iSceneDetect Environment Classification algorithm automatically
senses the hearing aid wearer’s environment and dynamically adjusts
hearing enhancement algorithms (such as Feedback cancellation, noise
reduction, compression, etc.) without user involvement.
Environment classification on Inspiria SA3286 enables programming
of hearing aid to a single program setting which can be employed by the
hearing−aid wearer in all environments instead of manually changing to
a different memory with a change in the acoustic environment.
The Inspiria SA3286 comes with EVOKEt advanced acoustic
indicators. EVOKE allows manufacturers to provide more complex,
multi−frequency tones which can simulate musical notes or chords.
The Inspiria SA3286 iLogt 2.0 Datalogging feature records various
parameters every 4 seconds to 60 minutes (programmable) during use of
the device. Once these parameter values are read from the device, they
can be used to counsel the hearing aid wearer and fine tune the fitting.
The Inspiria SA3286’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 SA3286’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.
Automatic Adaptive Directional Microphone (ADM) algorithm
from ON Semiconductor 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 SA3286 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 SA3286 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, volume control, rocker switch, and
industry−leading security features to avoid cloning and software piracy.
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16 PAD
HYBRID
CASE TBD
PAD CONNECTION
MGND
FMIC
RMIC
VC
SDA
GND
PGND
15
14
13
12
11
10
6
9
OUT+
8
OUT−
7
VB
VBP
16
1
2
3
VREG
TIN
DAI
MS
MS2
4
5
(Bottom View)
MARKING DIAGRAM
SA3286−E1
XXXXXX
SA3286 = 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
July, 2015
−
Rev. 2
1
Publication Order Number:
SA3286/D
INSPIRIA SA3286
Features
•
Advanced Research
♦
•
•
•
•
•
•
•
•
•
•
•
•
•
•
128−band Adaptive Noise Reduction
♦
Adaptive Feedback Cancellation
♦
Feedback Path Measurement Tool
♦
Automatic Adaptive Directional Microphones
♦
Environmental Classification
iSceneDetect Environmental Classification 1.0
iLog Datalogging 2.0
Tinnitus Treatment
EVOKE Acoustic Indicators
Auto Telecoil with Programmable Delay
FrontWave Directional Processing
1, 2, 4, 6 or 8 Channel WDRC Compression
AGC−O with Variable Threshold, Time Constants, and
Optional Adaptive Release
16−band Graphic EQ
Narrow−band Noise Stimulus
Optimized Programming Speed
8 Biquadratic Filters
Four Analog Inputs
16 kHz or 8 kHz Bandwidth
MS2
5
MS
4
•
Four Fully Configurable Memories with Audible
•
•
•
•
•
•
•
•
•
•
Memory Change Indicator
93 dB Input Dynamic Range with HRXt Headroom
Extension
128−bit Fingerprint Security System and Other Security
Features to Protect against Device Cloning and
Software Piracy
High Fidelity Audio CODEC
Soft Acoustic Fade between Memory Changes
Drives Zero−bias 2−terminal Receivers
Internal or External Analog or Digital Volume Control
with Programmable Range
Rocker Switch Support
20−bit Audio Precision
thinSTAX
®
Packaging
E1 RoHS Compliant Hybrid
thinSTAX Packaging
•
Hybrid typical dimensions:
0.215 x 0.124 x 0.067 in.
(5.46 x 3.15 x 1.70 mm)
VB
6
Acoustic
Indicators
S
POR
Circuitry
D/A
HBridge
7
8
9
VBP
OUT−
OUT+
VREG
1
Voltage
Regulator
Memory
Select
Post
Biquad
Filters
Cross
Fader
Peak
Clipper
FMIC 15
RMIC 14
TIN
DAI
2
3
M
U
X
A/D
A/D
MIC/TCOIL
COMP
Adaptive
Directional
Microphone
or
FrontWave
*
**
Feedback
Canceller
Noise Generator
and Shaper
S
10 PGND
AGCO
Volume
Control
Wideband
Gain
Control
A/D
13 VC
Pre
Biquad
Filters
MGND 16
Frequency
Band
Analysis
SDA 12
Programming
Interface
128 bands
Environmental
Classification
Post
Biquad
Filters
Frequency
Band
Synthesis
Data
Logging
WDRC (1,2,4,6 or 8 channels)
Noise Reduction (128 bands)
EEPROM
Clock
Generator
Graphic EQ (16 bands)
11
GND
* If Input Mode = 1 mic omni, mic + telecoil, mic + DAI
** If Input Mode = 2 mic omni, rear only, directional
Figure 1. Hybrid Block Diagram
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2
INSPIRIA SA3286
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameter
Operating Temperature Range
Storage Temperature Range
Absolute Maximum Power Dissipation
Maximum Operating Supply Voltage
Absolute Maximum Supply Voltage
Value
0 to +40
−20
to +70
25
1.5
2
Units
°C
°C
mW
VDC
VDC
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
WARNING:
Electrostatic Sensitive Device
−
Do not open packages or handle except at a static−free workstation.
WARNING:
Moisture Sensitive Device
−
RoHS Compliant; Level 4 MSL. Do not open packages except under controlled conditions.
Table 2. ELECTRICAL CHARACTERISTICS
(V
BAT
= 1.25 V; Temperature = 25°C) (Note 2)
Parameter
Hybrid Current
Symbol
I
AMP
Conditions
With adaptive features
(NR, FBC, ADM, Datalogging)
8 kHz bandwidth
With adaptive features
(NR, FBC, ADM, Datalogging)
16 kHz bandwidth
No adaptive feature
8 kHz bandwidth
No adaptive feature
16 kHz bandwidth
Minimum Operating Supply Voltage
Supply Voltage Turn On Threshold
Minimum Voltage Required for
EEPROM Data Logging
EEPROM Burn Cycles
Low Frequency System Limit
High Frequency System Limit
Total Maximum System Gain
Converter Gain
Total Harmonic Distortion
THD at Maximum Input
Clock Frequency
REGULATOR
Regulator Voltage
INPUT
Input Referred Noise
Input Impedance
Anti−aliasing Filter Rejection
Maximum Input Level
Input Dynamic Range
IRN
Z
IN
−
−
−
Bandwidth 100 Hz
−
8 KHz
−
f
=
f
CLK
−
8 kHz, V
IN
=
−40
dBV
−
HRX
−
ON Bandwidth
100 Hz
−
8 KHz
−
−
−
−
−
−108
16
80
−15
93
−106
−
−
−
−
dBV
kW
dB
dBV
dB
V
REG
−
0.87
0.90
0.93
V
V
BOFF
V
BON
−
−
−
−
A
V
A
Conv
THD
THD
M
f
clk
Ramp down
Ramp up
−
−
−
32 kHz sampling rate
V
IN
=
−95
dBV at 1 kHz (Note 1)
A / D + D / A gain
V
IN
=
−40
dBV
V
IN
=
−15
dBV, HRX
−
ON
−
Min
−
Typ
789
Max
−
Units
mA
−
992
−
−
−
0.93
1.06
1.13
100 k
−
−
83
29
−
−
1.945
590
703
0.95
1.1
−
−
125
16
84
30
−
−
2.048
−
−
0.97
1.16
−
−
−
−
85
31
1
3
2.151
V
V
V
cycles
Hz
kHz
dB
dB
%
%
MHz
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
1. Total system gain consists of: wideband system gain + channel gain + converter gain. Total System gain is calibrated during Cal/Config process.
2. Average currents with auto−ADM or iSceneDetect modes enabled are typically lower.
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3
INSPIRIA SA3286
Table 2. ELECTRICAL CHARACTERISTICS
(V
BAT
= 1.25 V; Temperature = 25°C) (Note 2)
Parameter
OUTPUT
D/A Dynamic Range
Output Impedance
VOLUME CONTROL
Volume Control Resistance
R
VC
Two−terminal connection
Three−terminal connection
Volume Control Range
SDA INPUT
Logic 0 Voltage
Logic 1 Voltage
SDA OUTPUT
Standby Pull Up Current
Sync Pull Up Current
Logic 0 Current (Pull Down)
Logic 1 Current (Pull Up)
Synchronization Time
(Synchronization Pulse Width)
−
−
−
−
T
SYNC
−
−
−
−
Baud = 0
Baud = 1
Baud = 2
Baud = 3
Baud = 4
Baud = 5
Baud = 6
Baud = 7
MS AND MS2 INPUTS
Pull Down / Up Resistance
Logic 1 Voltage
Rising Edge Threshold
Falling Edge Threshold
Hysteresis
−
−
−
−
−
−
−
−
−
−
−
V
REG
0.5
0.25
0.1
1
−
0.69
0.45
0.24
−
V
B
0.9
0.5
0.4
MW
V
V
V
V
1.4
775
−
−
237
118
59
29.76
14.88
7.44
3.72
1.86
5
900
450
450
250
125
62.5
31.25
15.63
7.81
3.91
1.95
6.5
1100
−
−
263
132
66
32.81
16.41
8.20
4.10
2.05
mA
mA
mA
mA
ms
−
−
−
−
0
1
−
−
0.3
1.3
V
V
DA
−
160
100
1
200
−
−
240
1000
42
dB
kW
−
Z
OUT
−
−
−
−
88
−
−
15
dB
W
Symbol
Conditions
Min
Typ
Max
Units
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
1. Total system gain consists of: wideband system gain + channel gain + converter gain. Total System gain is calibrated during Cal/Config process.
2. Average currents with auto−ADM or iSceneDetect modes enabled are typically lower.
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4
INSPIRIA SA3286
TYPICAL APPLICATIONS
V
B
5
Voltage
Regulator
4
Acoustic
Indicators
Post
Biquad
Filters
Σ
Cross
Fader
6
POR
Circuitry
Peak
Clipper
D/A
HBridge
7
OUT
8
9
10
LP
Filter
1
Memory
Select
15
3k9
14
3k9
2
1k
1k
16
3
M
U
X
A/D
A/D
MIC/
TCOIL
Comp
Adaptive
Directional
Microphone
or
FrontWave
*
**
Feedback
Canceller
AGCO
Noise Generator
and Shaper
Volume
Control
Σ
Wide−
band
Gain
Post
Biquad
Filters
Frequency
Band
Synthesis
WDRC (1,2,4,6 or 8 channels)
Noise Reduction (128 bands)
EEPROM
Graphic EQ (16 bands)
Data
Logging
Control
A/D
13
200 k
Pre
Biquad
Filters
Frequency
Band
Analysis
128 bands
Environmental
Classification
12
Programming
Interface
Clock
Generator
* If Input Mode = 1 mic omni, mic + telecoil, mic + DAI
** If Input Mode = 2 mic omni, rear only, directional
11
Figure 2. Test Circuit
V
B
5
4
Acoustic
Indicators
S
6
POR
Circuitry
Peak
Clipper
D/A
HBridge
7
8
9
10
1
Voltage
Regulator
Memory
Select
Post
Biquad
Filters
Adaptive
Directional
Microphone
or
FrontWave
*
**
Feedback
Canceller
AGCO
Knowles or
Microtronic
zero−bias
receiver
Cross
Fader
15
14
2
3
M
U
X
A/D
Noise Generator
and Shaper
Volume
Control
S
Wide−
band
Gain
Post
Biquad
Filters
Frequency
Band
Synthesis
WDRC (1,2,4,6 or 8 channels)
Noise Reduction (128 bands)
EEPROM
Data
Logging
A/D
MIC/
TCOIL
Comp
Control
A/D
13
16
Pre
Biquad
Filters
Frequency
Band
Analysis
128 bands
Environmental
Classification
12
Programming
Interface
Clock
Generator
Graphic EQ (16 bands)
11
* If Input Mode = 1 mic omni, mic + telecoil, mic + DAI
** If Input Mode = 2 mic omni, rear only, directional
Figure 3. Typical Application Circuit
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