GB3211 Datasheet, PDF (1/7 Pages) Gennum Corporation – Power PARAGON-TM DIGITAL Four Channel DSP System with FRONTWAVE-R

FEATURES
• high power applications
• 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
• 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
thinSTAX™ PACKAGING
Hybrid typical dimensions:
0.227 x 0.125 x 0.060 in
(5.76 x 3.18 x 1.52 mm)
Power PARAGON™ DIGITAL
Four Channel DSP System
with FRONTWAVE ^®
GB3211/GB3221 PRELIMINARY DATA SHEET
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 thinSTAX™
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
PARAGON™ 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
PARAGON™ DIGITAL” information note for a list of other
documents.
VB
12
205n
VREG ⁷
REGULATOR _13n
VC
SDA
5
4
MS MS2 VBP
11 13
14
VC
A/D
INTERFACE EEPROM
GB3211
(GB3221)
FMIC 9
70n
70n
RMIC ⁶
T ₁₀
60n
MGND 8
A/D
FRONTWAVE
A/D
CHANNEL 1
CHANNEL 2
S
CHANNEL 3
CHANNEL 4
D/A
HBRIDGE
15 OUT+
1 OUT-
All resistors in ohms, all capacitors in farads unless otherwise stated.
BLOCK DIAGRAM
3
GND
2
PGND
Doc.No.20475 - 4 [Rev. December 2003]
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