www.gennum.com
GA3222
AdvantaTM ADROTM-Enabled DSP System
GA3222 Preliminary Data Sheet
34477 - 0
February 2006
1 of 21
Features
ADROTM amplification technology
adaptive directional microphone system
adaptive feedback canceller
noise management
available optional turn-key software
high fidelity audio CODEC
20-bit audio precision
95dB input dynamic range with HRXTM Headroom
Extension
drives zero-bias 2-terminal receivers
4 analog inputs
4 fully configurable memories with audible memory
change indicator
2 memory select pads
volume control with configurable adjustment range
8kHz bandwidth
optimized programming speed
thinSTAX packaging
thinSTAX Packaging
Hybrid typical dimensions:
0.215 x 0.124 x 0.065in
5.46 x 3.15 x 1.65mm
Description
AdvantaTM is Gennum's premium high-end product with
ADRO technology from Dynamic Hearing implemented
on the VoyageurTM platform. The flexibility and
sophistication of ADRO combines with the precision
and advanced capabilities of Voyageur to deliver
unprecedented sound quality, comfort and audibility to
hearing aid wearers.
ADRO is fitted via direct in-situ measures to ensure a
fast, customised fitting. ADRO uses statistical analysis
and gain customized in 32 independent channels, so
that the sound level is always optimized to be within the
comfortable dynamic range of the listener.
Advanta's adaptive directional microphone technology
provides added benefit in background noise. Advanta
automatically changes from directional to
omni-directional in different environments as needed.
Advanta has an adjustable threshold criterion and
becomes omni-directional in wind noise, and in quiet. In
the directional mode, the signals from two
omni-directional microphones are combined and the
null is automatically moved to optimise noise rejection.
The adaptive directional microphone features a flat
frequency response, so that no additional frequency
compensation is required. It is easily configured for
different microphone placements, and can be calibrated
to match multiple microphones.
The advanced feedback canceller provides increased
maximum stable gain. Additionally, it features rapid
adjustment for dynamic feedback situations.
Advanta is available with the ConfigureTM fitting
software, so named as it allows the customer to quickly
configure the hearing aid. Configure features a
stand-alone database supporting multiple sessions,
automatic interface detection and an intuitive fitting
procedure which achieves fast and accurate fittings. A
software interface library for customers wishing to
integrate support for Advanta into existing fitting
software is also available.
Other configurable options on Advanta include: fixed
directional microphone, internal noise reduction with
user programmable settings, direct audio input, telecoil
input, calibration and test modes supporting standard
IEC/ANSI procedures, adjustable input selection, and
four listening programs.
GA3222 Preliminary Data Sheet
34477 - 0
February 2006
2 of 21
Block Diagram
Hybrid block diagram
FMIC
SDA
MS
RMIC
TIN
MS2
VC
MGND
OUT+
OUT-
VBP
PGND
VB
GND
VREG
DAI
16
3
2
14
15
1
5
4
12
13
6
7
8
9
10
11
PROGRAMMING
INTERFACE
EEPROM
M
U
X
D/A
HBRIDGE
PEAK
CLIPPER
CONTROL
A/D
A/D
A/D
CLOCK
GENERATOR
POR
CIRCUITRY
ADRO
Amplification Technology
CROSS
FADER
MICROPHONE
COMPENSATION
AGCO
FEEDBACK
CANCELLER
MEMORY
SELECT
FREQUENCY
BAND
ANALYSIS
FREQUENCY
BAND
SYNTHESIS
TONE
GENERATOR
32 Channels
VOLTAGE
REGULATOR
VOLUME
CONTROL
INTERNAL
NOISE
REDUCTION
IN-SITU
MEASURES/
NOISE
GENERATOR
CONFIGURABLE
RANGE
ADAPTIVE
or
FIXED
DIRECTIONAL
MICROPHONE
MIXED
MODE
GA3222 Preliminary Data Sheet
34477 - 0
February 2006
3 of 21
Contents
Features ........................................................................................................................1
thinSTAX Packaging .....................................................................................................1
Description ....................................................................................................................1
1. Pad Connection.........................................................................................................4
2. Absolute Maximum Ratings ......................................................................................4
3. Warnings ...................................................................................................................4
4. Electrical Characteristics...........................................................................................5
5. Typical Applications ..................................................................................................7
6. Advanta Overview .....................................................................................................9
7. Functional Block Description.....................................................................................9
7.1 ADRO Processing ...........................................................................................9
7.2 Adaptive Directional Microphone ..................................................................10
7.2.1 Threshold Criterion ..............................................................................10
7.3 Noise Reduction ............................................................................................10
7.3.1 Expansion Threshold ...........................................................................10
7.3.2 Expansion Ratio...................................................................................10
7.3.3 Time Constants....................................................................................11
7.4 Adaptive Feedback Canceller .......................................................................11
7.5 A/D and D/A Converters ...............................................................................12
7.6 HRX Head Room Expander ..........................................................................12
7.7 Volume Control .............................................................................................12
7.8 Memory Select Switches ...............................................................................12
7.8.1 Momentary Switch on MS....................................................................13
7.8.2 Momentary Switch on MS, Static Switch on MS2
(jump to last memory) ...................................................................................13
7.8.3 Static Switch on MS and MS2 .............................................................13
7.8.4 Static Switch on MS, Static Switch on MS2
(jump to last memory) ...................................................................................14
7.9 Audible Memory Change Indicator ................................................................15
7.10 Cross Fader ................................................................................................15
7.11 SDA Communication ...................................................................................15
7.12 Power Management ....................................................................................15
7.13 Power-On/Power-Off Behavior and Low Battery Indicator ..........................16
7.14 Telecoil Path ...............................................................................................17
8. Software Support ....................................................................................................18
8.1 ADROCOM ...................................................................................................18
8.2 Advanta CalConfig ........................................................................................18
8.3 ConfigureTM ...................................................................................................18
9. Package Dimensions ..............................................................................................19
9.1 Pad Location .................................................................................................20
10. Revision History ....................................................................................................21
GA3222 Preliminary Data Sheet
34477 - 0
February 2006
4 of 21
1. Pad Connection
Figure 1-1: Pad Connection
2. Absolute Maximum Ratings
3. Warnings
VREG
TIN
DAI
MS
MS2
VB
VBP
OUT-
OUT+
PGND
GND
SDA
VC
RMIC
FMIC
MGND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Parameter
Value
Operating Temperature Range
0C to 40C
Storage Temperature Range
-20C to 70C
Maximum Operating Supply Voltage
1.5VDC
Absolute Maximum Supply Voltage
2VDC
CAUTION
ELECTROSTATIC SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
CAUTION
LEVEL 3 MOISTURE
SENSITIVE DEVICES
DO NOT OPEN PACKAGES EXCEPT
UNDER CONTROLLED CONDITIONS
GA3222 Preliminary Data Sheet
34477 - 0
February 2006
5 of 21
4. Electrical Characteristics
Table 4-1: Electrical Characteristics
Conditions: V
BAT
= 1.25V Temperature = 25C
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Minimum Operating Supply Voltage
V
BOFF
Ramp down
0.93
0.95
0.97
V
Supply Voltage Turn On Threshold
V
BON
Ramp up
1.06
1.1
1.16
V
EEPROM Burn Cycles
100k
cycles
Current Consuption
ADRO-only (single mic)
850
uA
All features enabled (dual mic)
1.1
mA
Low Frequency System Bandwidth
125
Hz
High Frequency System Bandwidth
16kHz sampling rate
8
kHz
Total Harmonic Distortion
THD
V
IN
= -40dBV
1
%
THD at Maximum Input
THD
M
V
IN
= -15dBV, HRX - ON
3
%
Clock Frequency
f
clk
1.945
2.048
2.151
MHz
Regulator
Regulator Voltage
V
REG
0.87
0.90
0.93
V
Input
Input Referred Noise
IRN
Bandwidth 100Hz - 8KHz
-109
-106
dBV
Input Impedance
Z
IN
16
k
Anti-aliasing Filter Rejection
=
CLK
- 8kHz, V
IN
= -40dBV
80
dB
Maximum Input Level
-15
dBV
Input Dynamic Range
HRX - ON Bandwidth 100Hz - 8KHz
94
dB
A/D Dynamic Range
Bandwidth 100Hz - 8KHz
83
dB
Output
D/A Dynamic Range
88
dB
Output Impedance
Z
OUT
15
PDF 
ZIP