GB3211/GB3221 PRELIMINARY DATA SHEET
Doc.No.20475 - 4 [Rev. December 2003]
1 of 7
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/ GB
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21
FEATURES
high power applications
highly configurable, versatile DSP platform
high fidelity multi-channel AGC signal processing
95dB input dynamic range with HRXTM Headroom
Extension
fully programmable via serial data interface
high performance data converters dual, over-
sampled A/Ds; over-sampled D/A with efficient
switched-mode output power amp
SOUND
DESIGN
TM high-fidelity audio quality
drives zero-bias 2-terminal receivers
multiple communication rates up to 85.3kb/s
multi-memory
internal/external volume control
volume control taper determined by external VC
2 memory select pads
tri-state memory select operation
audible memory change indicator
thinSTAXTM PACKAGING
Hybrid typical dimensions:
0.227 x 0.125 x 0.060 in
(5.76 x 3.18 x 1.52 mm)
DESCRIPTION
The GB3211 (GB3221) hybrid is a programmable DSP
system based on a multi-channel compression circuit. This
hybrid is designed for low impedance receivers. It can be
used as a platform for a wide range of hearing aid
applications. It also offers a seperate supply line to the A/D
and H-Bridge circuits. The reflowable thinSTAXTM
packaging enables easy integration into BTE applications.
This versatile DSP hybrid is capable of multiple
configurations and has a wide range of functions.
The GB3211 hybrid contains the GC5051 controller chip
and the GB3221 hybrid contains the GC5057 controller
chip. The only difference between the GC5051 and the
GC5057 is in their Power On Reset (POR) behaviour.
For a detailed description of the POR behaviour of the
GC5051 and GC5057 controller chips, please refer to
PARAGONTM DIGITAL Reference Guide
, Document
#20143.
The GB3211 and the GB3221 hybrid code programmed
into the GC5051 and the GC5057 controller chips is "7".
This data sheet is a part of a set of documents available for
this product. Please refer to
Getting Started with
PARAGONTM DIGITAL
" information note for a list of other
documents.
BLOCK DIAGRAM
PGND
FMIC
MGND
VREG
RMIC
T
VC
OUT-
OUT+
MS
SDA
VB
INTERFACE
VC
A/D
FRONTWAVE
CHANNEL 1
CHANNEL 2
CHANNEL 3
CHANNEL 4
EEPROM
REGULATOR
GB3211
A/D
A/D
D/A
HBRIDGE
205n
60n
13n
70n
70n
All resistors in ohms, all capacitors in farads unless otherwise stated.
S
MS2
VBP
GND
8
10
6
9
7
12
5
4
11
13
14
15
1
2
3
(GB3221)
Power PARAGONTM
DIGITAL
Four Channel
DSP System
with F
RONT
W
AVE
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GENNUM CORPORATION
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ABSOLUTE MAXIMUM RATING
PAD CONNECTION
Operating Temperature Range:
-10C to 40C
Storage Temperature Range:
-20C to 70C
Absolute Maximum Power Dissipation:
25mW
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
MGND
FMIC
T
MS
VB
MS2
VBP
OUT+
OUT-
PGND
GND
SDA
VC
RMIC
VREG
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
CAUTION
LEVEL 3 MOISTURE
SENSITIVE DEVICES
DO NOT OPEN PACKAGES EXCEPT UNDER
CONTROLLED CONDITIONS
ELECTRICAL CHARACTERISTICS
Conditions: Supply Voltage V
B
= 1.3V; Temperature = 25C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Hybrid Current
AMP
See current consumption section
-
700
-
A
Minimum Operating Supply Voltage
V
BOFF
Ramp down
0.94
1.0
1.05
V
Supply Voltage turn on threshold
V
BON
Ramp up
1.06
1.10
1.16
V
Supply Voltage Hysteresis
90
100
110
mV
Supply Voltage during
Communication
V
BC
During Communication
1.19
1.35
1.5
V
Hybrid Current during
Communication
P
Programming (<5 ms)
-
3.7
-
mA
EEPROM Burn Cycles
Note 2
100k
-
cycles
Low Frequency System Bandwidth
100
140
225
Hz
High Frequency System Bandwidth
15.2
16
16.8
kHz
Total Maximum System Gain
A
V
V
IN
= -95 dBV @ 3kHz; squelch
disabled
See Note 1.
81
83
85
dB
Converter Gain
A
CONV
A/D + D/A gain.
27
29
31
dB
Total Harmonic Distortion
THD
V
IN
= -40 dBV
-
0.05
1
%
THD at Maximum Input
THD
M
V
IN
= -15 dBV, HRX - ON
-
1.5
3
%
Clock Frequency
clk
1.945
2.048
2.151
MHz
REGULATOR
Regulator Voltage
V
REG
0.90
0.95
1.00
V
Regulator Supply Rejection
PSRR
REG
-
50
-
dB
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INPUT
Input Referred Noise
IRN
Bandwidth 100Hz - 8kHz
-
-108
-106
dBV
Input Impedance
Z
IN
11.2
16
22
k
Anti-alias Filter Rejection
(input referred)
=
clk
-8kHz, V
IN
= -40dBV
-
80
-
dB
Maximum Input Level
-
-15
-
dBV
Input Dynamic Range
HRX - ON, Bandwidth 100Hz - 8kHz
-
95
-
dB
Audio Sample Rate
30.4
32
33.6
kHz
A/D Dynamic Range
Bandwidth 100Hz - 8kHz
-
86
-
dB
OUTPUT
Maximum RMS Output Voltage
0dBFS = 1kHz
-3
-1
1
dBV
D/A Dynamic Range
Bandwidth 100Hz - 8kHz
80
-
-
dB
Output Impedance
Z
OUT
Note 2
-
-
20
VOLUME CONTROL
Volume Control Resistance
R
VC
160
200
240
k
Volume Control Range
A
47.5
48
48.5
dB
MS INPUT
Low State
Lo
0
-
V
REG
/3
V
Open State
Z
V
REG
/3
-
2V
REG
/3
V
High State
Hi
2V
REG
/3
-
V
B
V
MS2 INPUT
Pull Down Resistance
-
1
-
M
Logic 1 Voltage
V
REG
-
V
B
V
Rising Edge Threshold
0.5
0.69
0.9
V
Falling Edge Threshold
0.25
0.45
0.5
V
Hysteresis
0.1
0.24
0.4
V
ELECTRICAL CHARACTERISTICS
(CONTINUED)
Conditions: Supply Voltage V
B
= 1.3V; Temperature = 25C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
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SUPPORT SOFTWARE
All support software for the GB3211 / GB3221 is available
from Gennum Web site:
www.gennum.com/hip/software/index.html
.
SDA INPUT
Logic 0 Voltage
Note 2
0
-
0.3
V
Logic 1 Voltage
Note 2
1
-
1.3
V
SDA OUTPUT
Standby Pull Up Current
1.4
2
2.6
A
Sync Pull Up Current
450
500
550
A
Logic 0 Current (Pull Down)
225
250
275
A
Logic 1 Current (Pull Up)
225
250
275
A
Synchronization Time
(Synchronization Pulse Width)
T
SYNC
Baud = 0
Baud = 1
Baud = 2
Baud = 3
Baud = 4
Baud = 5
Baud = 6
Baud = 7
237
118
59
29.76
14.88
7.44
3.72
1.86
250
125
62.5
31.25
15.63
7.81
3.91
1.95
263
132
66
32.81
16.41
8.20
4.10
2.05
s
s
s
s
s
s
s
s
NOTE 1: Total System Gain consists of: Wideband System Gain + High and Low Independent Channel Gains + Converter Gain
Total System Gain is calibrated during Cal/Config process.
NOTE 2: Sample tested.
ELECTRICAL CHARACTERISTICS
(CONTINUED)
Conditions: Supply Voltage V
B
= 1.3V; Temperature = 25C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
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Figure 1: Test Circuit
Figure 2: Sample Application Circuit
INTERFACE
VC
A/D
FRONTWAVE
CHANNEL 1
CHANNEL 2
CHANNEL 3
CHANNEL 4
EEPROM
REGULATOR
GB3211
A/D
A/D
D/A
HBRIDGE
205n
60n
13n
70n
70n
S
8
10
6
9
7
12
5
4
11
13
14
15
1
2
3
3k9
3k9
1k
LP FILTER
OUT
VB
200k
(GB3221)
All resistors in ohms, all capacitors in farads unless otherwise stated.
VB
VC
MS
200k(log)
22
INTERFACE
VC
A/D
FRONTWAVE
CHANNEL 1
CHANNEL 2
CHANNEL 3
CHANNEL 4
EEPROM
REGULATOR
GB3211
A/D
A/D
D/A
HBRIDGE
205n
60n
13n
70n
70n
S
MS2
47
12
11
13
14
15
1
2
3
5
8
10
6
9
7
4
Knowles or Microtronic microphones
Knowles or Microtronic
zero-bias receiver
(GB3221)
All resistors in ohms, all capacitors in farads unless otherwise stated.
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