DIGITAL鈩?/div>
Two Channel DSP System
GA3209 PRELIMINARY DATA SHEET
FEATURES
鈥?highly configurable, versatile DSP platform
鈥?high quality two-channel AGC signal processing
鈥?fully programmable via serial data interface
鈥?high performance data converters - dual, over-
sampled A/Ds; over-sampled D/A with efficient
switched-mode output power amp
鈥?drives zero-bias 2-terminal receivers
鈥?multiple communication rates up to 85.3kb/s
鈥?thinSTAX鈩?packaging - CIC size
鈥?multi-memory
鈥?internal/external volume control
鈥?volume control taper determined by external VC
thinSTAX
TM
PACKAGING
Hybrid typical dimensions:
0.227 x 0.125 x 0.060 in
(5.76 x 3.18 x 1.52 mm)
DESCRIPTION
The GA3209 hybrid is a programmable DSP system based
on a two-channel compression circuit. It can be used as a
platform for a wide range of hearing aid applications. It鈥檚
extensive programmability and compact size make it ideal
for sophisticated CIC applications. The reflowable
thinSTAX鈩?packaging enables easy use in BTE
applications. This very versatile DSP hybrid is capable of
multiple configurations and has a wide range of functions.
The GA3209 hybrid code programmed into the GC5050
controller chip is 鈥?鈥?
GA3209
VC
4
205n
REG
REG
7
6
REGULATOR
13n
VC
A/D
SDA
3
MS
11
VB
12
INTERFACE
EEPROM
GA3209
MIC
8
70n
A/D
CHANNEL 1
13 OUT+
1
CHANNEL 2
OUT-
危
D/A
HBRIDGE
T 10
60n
A/D
GND
GND
9
5
2
All resistors in ohms, all capacitors in farads unless otherwise stated.
PGND
BLOCK DIAGRAM
Doc.No.14437 - 2 [Rev. February 2002]
1