GA3219 Datasheet, PDF (12/14 Pages) Gennum Corporation – Venture-TM Digital DSP System

VENTURE GA3219
can be ‘locked’ at manufacturing time so that it only
communicates with the library it was programmed with.
This prevents a third party from potentially upgrading a
device with a different library in IDS or other
application software.
Full software support is provided for every stage of
development from design to manufacturing to fitting. For
details, refer to the Getting Started with the ARK Software
information note.
SDA Communication
Venture GA3219 is programmed via the SDA pin using
industry standard programming boxes. During parameter
changes, the main audio signal path of the hybrid is
temporarily muted using the memory switch fader to avoid
the generation of disturbing audio transients. Once the
changes are complete, the main audio path is reactivated.
Any changes made during programming are lost at
power−off unless they are explicitly burned to EEPROM
memory.
Improvements have been made to the ARK software for
Venture GA3219 resulting in increased communication
speed. Certain parameters in ARKonline can be selected to
reduce the number of pages that need to be read out.
Power Management
Venture GA3219 was designed to accommodate high
power applications. AC ripple on the supply can cause
instantaneous reduction of the battery’s voltage, potentially
disrupting the circuit’s function. Venture GA3219 hybrids
have a separate power supply and ground connections for the
output stage. This enables hearing instrument designers to
accommodate external RC filters to minimize any AC ripple
from the supply line. Reducing this AC ripple greatly
improves the stability of the circuit and prevents unwanted
reset of the circuit caused by spikes on the supply line.
For more information on properly designing a filter to
reduce supply ripple, refer to the Using DSP Hybrids in High
Power Applications Initial Design Tips information note.
ORDERING INFORMATION
Device
GA3219D−E1
Package
16 Pad Hybrid
Shipping^†
25 Units / Bubble Pack
GA3219D−E1−T
16 Pad Hybrid
500 Units / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
Hybrid Jig Ordering Information
To order a Hybrid Jig Evaluation Board for Venture GA3219 contact your Sales Account Manager or FAE and use part
number GA3280GEVB.
www.onsemi.com
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