ETC GA3209-S01

PARAGON DIGITAL™ GA3209-S01
PAL Configuration
PRELIMINARY DATA SHEET
DESCRIPTION
• 2 channel WDRC processing
The GA3209-S01 Product Abstraction Layer™ (PAL)
provides an advanced, two channel Wide Dynamic Range
Compression (WDRC) DSP system. A highly configurable
digital signal processor enables strong fitting versatility with
independent
channel
compression
characteristics,
including five parameter I/O curve adjustments (one of
them calculated) and variable AGC time constants. All
programmable parameters, including the crossover
frequency, have generous adjustment ranges and excellent
resolution. Each channel contains independent AGC control
with Gennum's proven Twin Detector approach.
• fully adjustable crossover frequency
• AGC Detector in each channel with adjustable time
constants (Single or Twin Detector)
• flexible WDRC I/O curve adjustment (channel
independent)
• wideband gain adjustment with external VC option
• notch filter (variable center and width) and dynamic
depth (gain dependent)
• soft squelch (low level expansion) with variable
threshold and variable time constants
Advanced features include low level expansion, a fully
programmable notch filter with optional gain-dependent
operation and a pure tone generator enabling in situ
audiometry.
• low cut filter
• high cut filter
• AGCO (variable threshold and time constants)
• digital peak clipping option
• low battery indicator
• tone generator (programmable level and frequency)
• 4 memories with full configuration storage
GA3209 provides industry leading performance with an
input dynamic range of 95dB, total system time delay of
less than 2ms and low current consumption (below 900µA
including transducers in most single microphone
applications).
GA3209
GA3209-S01
CHANNEL
PROCESSING
TWIN DETECTORS
70nF
MIC
8
A/D
LC FILTER
Σ
BAND
SPLIT
FILTER
CHANNEL
PROCESSING
TWIN
DETECTOR
HC FILTER
NOTCH
FILTER
PEAK
CLIPPING
D/A
HBRIDGE
13
OUT+
1
OUT-
TONE
GENERATOR
TWIN DETECTORS
SQUELCH
AGC-O
BLOCK DIAGRAM
Doc.No.17367 - 1 [Rev. October 2001]
1
GA3209
FEATURES
ELECTRICAL CHARACTERISTICS
RANGE
PARAMETER
UNITS
RESOLUTION
ACCURACY
MIN
MAX
0.300
8
kHz
N/A
type 1,2
LC Filter Corner Frequency
0.125
8
kHz
N/A
type 1,2
HC Filter Corner Frequency
0.125
FILTER BANKS
GA3209
Crossover Frequency
FREQUENCY SHAPING
LC and HC Filter Roll-Off Rate
8
12
kHz
N/A
type 1,2
dB/oct
N/A
N/A
dB
Table 2
type 3
INDEPENDENT CHANNEL PROCESSING
Low Level Gain
-18
42
High Level Gain
-18
42
dB
Table 2
type 3
Lower Threshold
30
110
dBSPL
Table 2
type 3
Upper Threshold
30
110
dBSPL
Table 2
type 3
Compression Ratio
1:1
100:1
Ratio
Table 1
type 3
AGCi Attack Time Constant (Fast & Slow)
0.25
8192
ms
Table 1
type 1,3
AGCi Release Time Constant (Fast & Slow)
0.25
8192
ms
Table 1
type 1,3
Wideband System Gain
-36
12
dB
Table 2
type 3
Wideband Attack Time Constant (Fast & Slow)
0.25
8192
ms
Table 1
type 1,3
Wideband Release Time Constant (Fast & Slow)
0.25
8192
ms
Table 1
type 1,3
WIDEBAND SYSTEM GAIN
Converter Gain
See hardware Data Sheet Doc# 14437
External VC
-48
0
dB
Table 2
type 3
Internal VC Attenuator
-48
0
dB
Table 2
type 3
-19
83
dB
N/A
Note 1
-40
0
dBFS*
Table 2
type 3
Ratio
N/A
N/A
TOTAL SYSTEM GAIN
Total System Gain
AGCo
AGCo Output Limiting
∞ :1
AGCo Compression Ratio
AGCo Attack Time Constant (Fast & Slow)
0.25
8192
ms
Table 1
type 1,3
AGCo Release Time Constant (Fast & Slow)
0.25
8192
ms
Table 1
type 1,3
-40
0
dB
Table 2
type 3
ratio
N/A
N/A
dBSPL
Table 2
type 3
PEAK CLIPPER
PC Output Limiting
LOW LEVEL EXPANSION (SOFT SQUELCH)
Squelch Expansion Ratio
Squelch Threshold
1:2
30
60
Squelch Attack Time
Same as Wideband Fast Attack Time Constant
Squelch Release Time
Same as Wideband Fast Release Time Constant
NOTCH FILTER
NF Center Frequency
0.8
5
kHz
N/A
type 1,2
NF Attenuation
0
12
dB
Table 1
N/A
NF Bandwidth
1/12
1
octave
Table 1
N/A
* peak output is defined as largest sine wave possible at a the resonant frequency of the receiver
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17367 - 1
ELECTRICAL CHARACTERISTICS
(Continued)
RANGE
PARAMETER
UNITS
RESOLUTION
ACCURACY
MIN
MAX
Pure Tone Frequency
0.25
16
kHz
Table 1
type 1,2
Pure Tone Amplitude
-96
0
dBFS
Table 2
type 3
TONE GENERATOR
GA3209
NOTE 1: Total System Gain consists of Wideband System Gain + High and Low Independent Channel Gains + Converter Gain and accuracy of this
parameter is dependent on accuracy of the components.
Accuracy definitions:
type 1: accuracy is determined by the clock frequency deviation
type 2: accuracy is determined by the quantization error of 16bit coefficient and 20bit or higher data word.
type 3: accuracy is determined by the quantization error of a parameter word (see table 2 for word length) and 20bit or higher data word.
TABLE 1: Parameter Values Supported by GA3209-S01 PAL
RATIO
Compression Ratio
1 ; 1.016 ; 1.032 ; 1.050 ; 1.067 ; 1.085 ; 1.103 ; 1.123 ; 1.143 ; 1.164 ; 1.185 ; 1.210 ;
1.230 ; 1.255 ; 1.28 ; 1.31 ; 1.33 ; 1.36 ; 1.39 ; 1.42 ; 1.45 ; 1.49 ; 1.52 ; 1.56 ; 1.60 ;
1.64 ; 1.68 ; 1.73 ; 1.78 ; 1.83 ; 1.88 ; 1.94 ; 2.00; 2.06 ; 2.13 ; 2.21 ; 2.29 ; 2.37 ;
2.46 ; 2.56 ; 2.67 ; 2.78 ; 2.90 ; 3.05 ; 3.20; 3.37 ; 3.56 ; 3.76 ; 4.00 ; 4.27 ; 4.57 ;
4.92 ; 5.33 ; 5.82 ; 6.40 ; 7.11 ; 8.00 ; 9.14 ; 10.67 ; 12.80 ; 16.00 ; 21.33 ; 32.00 ;
64.00 ; 100
Attack and Release Time
constant
0.25 ; 0.5 ; 1 ; 2 ; 4 ; 8 ; 16 ; 32 ; 64 ; 128 ; 256 ; 512 ; 1024 ; 2048 ; 4096 ; 8192
ms
NF Attenuation
0 ; 6 ; 12
dB
NF Bandwidth
1/12 ; 1/6 ; 1/4 ; 1/3 ; 1/2 ; 1
Pure Tone Frequency*
0.250 ; 0.500 ; 0.640 ; 0.800 ; 1.00 ; 1.28 ; 1.60 ; 2.00 ; 3.20 ; 4.00 ; 6.40 ; 8.00 ; 16.00
octave
kHz
*other frequencies are available with increased harmonics components
GA3209
GA3209-S01
CHANNEL
PROCESSING
TWIN DETECTORS
MIC
70nF
A/D
8
LC FILTER
3k9
BAND
SPLIT
FILTER
HC FILTER
PEAK
CLIPPING
D/A
HBRIDGE
13
OUT
OUT+
LP FILTER
1
NOTCH
FILTER
CHANNEL
PROCESSING
TWIN
DETECTOR
Σ
OUT-
TONE
GENERATOR
TWIN DETECTORS
SQUELCH
AGC-O
Fig. 1 Characterization Circuit
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
REVISION NOTES:
Update to Block Diagram and document information.
DOCUMENT IDENTIFICATION
PRELIMINARY DATA SHEET
The product is in a preproduction phase and specifications
are subject to change without notice.
For latest product information, visit www.gennum.com
GENNUM CORPORATION
GENNUM JAPAN CORPORATION
MAILING ADDRESS:
P.O. Box 489, Stn A, Burlington Ontario, Canada L7R 3Y3
Tel. +1 (905) 632-2996 fax: +1 (905) 632-2814
C-101, Miyamae Village, 2-10-42 Miyamae, Suginami-ku, Tokyo 168-0081, Japan
Tel. +81 (3) 3334-7700 Fax: +81 (3) 3247-8839
SHIPPING ADDRESS:
970 Fraser Drive, Burlington, Ontario, Canada L7L 5P5
Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement.
© Copyright October 2000 Gennum Corporation. All rights reserved. Printed in Canada.
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