PARAGON
™
DIGITAL
Four Channel
DSP System with
F
RONT
W
AVE
®
GB3215/GB3225 PRELIMINARY DATA SHEET
FEATURES
• highly configurable, versatile DSP platform
• high fidelity multi-channel AGC signal processing
• 95dB input dynamic range with HRX™ 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
• SOUNDDESIGN™ high-fidelity audio quality
• drives zero-bias 2-terminal receivers
• multiple communication rates up to 85.3kb/s
• thinSTAX™ packaging - CIC size
• multi-memory
• internal/external volume control
• volume control taper determined by external VC
• tri-state memory select operation
• audible memory change indicator
thinSTAX™ PACKAGING
Hybrid typical dimensions:
0.227 x 0.125 x 0.060 in
(5.76 x 3.18 x 1.52 mm)
DESCRIPTION
The GB3215 (GB3225) hybrid is a programmable DSP
system based on a multi-channel compression circuit. It
can be used as a platform for a wide range of hearing aid
applications. Its extensive programmability and compact
size make it ideal for sophisticated CIC applications. The
reflowable thinSTAX™ packaging enables easy integration
into BTE applications. This very versatile DSP hybrid is
capable of multiple configurations and has a wide range of
functions.
The GB3215 hybrid contains the GC5051 controller chip
and the GA3225 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
PARAGON™ DIGITAL Reference Guide,
Document
#20143.
The GB3215 and the GB3225 hybrid code programmed
into the GC5051 and the GC5057 controller chips is “9”.
This data sheet is a part of a set of documents available for
this product. Please refer to “Getting
Started with
PARAGON™ DIGITAL”
information note for a list of other
documents.
GB3215 / GB3225
VC
4
205n
RREG
FREG
FMIC
7
8
9
70n
A/D
REGULATOR
SDA
3
MS
12
VB
13
GB3215
(GB3225)
13n
VC
A/D
INTERFACE
EEPROM
CHANNEL 1
FRONTWAVE
CHANNEL 2
S
D/A
HBRIDGE
14
OUT+
1
OUT-
70n
RMIC
T
6
A/D
CHANNEL 3
11
60n
CHANNEL 4
FGND
10
RGND
5
2
All resistors in ohms, all capacitors in farads unless otherwise stated.
PGND
BLOCK DIAGRAM
Doc.No. 22735 - 3 [Rev. December 2003]
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ABSOLUTE MAXIMUM RATING
Operating Temperature Range:
Storage Temperature Range:
Absolute Maximum Power Dissipation:
Maximum Operating Supply Voltage:
Absolute Maximum Supply Voltage:
-10°C to 40°C
-20°C to 70°C
25mW
PAD CONNECTION
FREG
FMIC
FGND
T
MS
VB
OUT+
8
9
10
11
12
13
14
GB3215 / GB3225
1.5VDC
2VDC
7
6
5
4
3
2
1
RREG
RMIC
RGND
VC
SDA
PGND
OUT-
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
ELECTRICAL CHARACTERISTICS
Conditions: Supply Voltage V
B
= 1.3V; Temperature = 25°C
PARAMETER
Hybrid Current
Minimum Operating Supply
Voltage
Supply Voltage turn on threshold
Supply Voltage Hysteresis
Supply Voltage during
Communication
Hybrid Current during
Communication
EEPROM Burn Cycles
Low Frequency System Bandwidth
High Frequency System Bandwidth
Total Maximum System Gain
Converter Gain
Total Harmonic Distortion
THD at Maximum Input
Clock Frequency
REGULATOR
Regulator Voltage
Regulator Supply Rejection
SYMBOL
Ι
AMP
V
BOFF
V
BON
CONDITIONS
See current consumption section
Ramp down
Ramp up
MIN
-
0.94
1.06
90
TYP
700
1.0
1.10
100
1.35
3.7
-
140
16
83
29
0.05
1.5
2.048
MAX
-
1.05
1.16
110
1.5
-
UNITS
µA
V
V
mV
V
mA
cycles
V
BC
Ι
P
During Communication
Programming (<5 ms)
Note 2
1.19
-
100k
100
15.2
225
16.8
85
31
1
3
2.151
Hz
kHz
dB
dB
%
%
MHz
A
V
A
CONV
THD
THD
M
ƒ
clk
V
IN
= -95 dBV @ 3kHz; squelch disabled
See Note 1.
A/D + D/A gain.
V
IN
= -40 dBV
V
IN
= -15 dBV, HRX - ON
81
27
-
-
1.945
V
REG
PSRR
REG
0.90
-
0.95
50
1.00
-
V
dB
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GENNUM CORPORATION
22735 - 3
ELECTRICAL CHARACTERISTICS
PARAMETER
INPUT
Input Referred Noise
Input Impedance
Anti-alias Filter Rejection
(input referred)
Maximum Input Level
Input Dynamic Range
Audio Sample Rate
A/D Dynamic Range
OUTPUT
Maximum RMS Output Voltage
D/A Dynamic Range
Output Impedance
VOLUME CONTROL
Volume Control Resistance
Volume Control Range
MS INPUT
Low State
Open State
High State
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)
(CONTINUED)
Conditions: Supply Voltage V
B
= 1.3V; Temperature = 25°C
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
IRN
Z
IN
Bandwidth 100Hz - 8kHz
-
11.2
-108
16
80
-15
95
32
86
-106
22
-
-
-
33.6
-
dBV
kΩ
GB3215 / GB3225
ƒ=ƒ
clk
-8kHz,
V
IN
= -40dBV
-
-
dB
dBV
dB
kHz
dB
HRX - ON, Bandwidth 100Hz - 8kHz
-
30.4
Bandwidth 100Hz - 8kHz
-
0dBFS ƒ = 1kHz
Bandwidth 100Hz - 8kHz
Z
OUT
Note 2
-3
80
-
-1
-
-
1
-
20
dBV
dB
Ω
R
VC
∆A
160
47.5
200
48
240
48.5
kΩ
dB
Lo
Z
Hi
0
V
REG
/3
2V
REG
/3
-
-
-
V
REG
/3
2V
REG
/3
V
B
V
V
V
Note 2
Note 2
0
1
-
-
0.3
1.3
V
V
1.4
450
225
225
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
2
500
250
250
250
125
62.5
31.25
15.63
7.81
3.91
1.95
2.6
550
275
275
263
132
66
32.81
16.41
8.20
4.10
2.05
µA
µA
µA
µA
µs
µs
µs
µs
µs
µs
µs
µs
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.
SUPPORT SOFTWARE
All support software for the GB3215 / GB3225 is available from
Gennum Web Site
www.gennum.com/hip/software/index.html.
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GENNUM CORPORATION
22735 - 3
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