|
GA3216 Datasheet, PDF (1/16 Pages) Gennum Corporation – FOUNDATION-TM Digital Single or Dual Channel DSP Compression System | |||
|
FOUNDATION GA3216
Pre-configured DSP System
for Hearing Aids
Description
The Foundation GA3216 hybrid is a trimmerâconfigurable DSP
system based on a twoâchannel compression circuit. It can efficiently
replace traditional hearingâaid compression circuits without
compromising fundamental performance requirements.
A trimmer interface supports manual circuit configuration. It
continuously monitors trimmer positions and translates them into the
hearingâaid parameters of choice. A serial data interface provides full
programmability at the factory and in the field.
The Foundation GA3216 includes inâchannel squelch to attenuate
microphone and circuit noise in quiet environments. It also includes
lowâdistortion compression limiting and programmable high and low
cut filters, as well as five configurable equalization filters. Unused
blocks can be powered down to save battery current, for example,
when using the device in singleâchannel mode.
The Foundation GA3216 Hybrid code programmed into the
GC5020 controller chip is â1â.
Features
⢠Efficient, High Fidelity 1 or 2âChannel WDRC Signal Processing
⢠Fully Programmable via Serial Data Interface
⢠HighâFidelity Audio Quality
⢠Four Trimmer Inputs plus Volume Control
⢠Flexible Trimmer/Parameter Assignments
⢠Optional TwoâTerminal or ThreeâTerminal Trimmers
⢠Choice of Wideband or Independent 2âChannel Level Detection
⢠Choice of Two Strategies for AGCâI Parametric Adjustment
⢠6, 12 or 24 dB/Octave Band Split Filter or Configurable as
SingleâChannel Compressor
⢠InâChannel, Low Level Squelch Control (1:2 Expansion)
⢠Output Compression Limiting (AGCâO)
⢠Flexible Preâ and PostâEmphasis Filters
⢠Four Independent Memories
⢠PulseâDensityâModulated Output Stage Drives ZeroâBias
2âTerminal Receivers
⢠High-Power Drive Capability
⢠Unused Blocks can be Powered Down
⢠thinSTAX® Packaging
⢠Also Available as E1 RoHS Compliant Hybrid
thinSTAX Packaging
⢠Hybrid Typical Dimensions:
0.190 x 0.123 x 0.060 in.
(4.82 x 3.12 x 1.52 mm)
www.onsemi.com
20 PAD
HYBRID
CASE TBD
PAD CONNECTION
IN T
15 16 17
1
MGND
2
MS2 14
18
3
MS 13
19
4
SDA 12
5
VB 11
20
6
VBP 10 9
8
7
OUTâ OUT+
(Bottom View)
VREG
TR1
TR2
TR3
VC
GND1
PGND
MARKING DIAGRAM
GA3216âE1
XXXXXX
GA3216
E1
XXXXXX
= Specific Device Code
= RoHS Compliant Hybrid
= Work Order Number
ORDERING INFORMATION
See detailed ordering and shipping information on page 14 of
this data sheet.
© Semiconductor Components Industries, LLC, 2015
1
August, 2015 â Rev. 12
Publication Order Number:
GA3216/D
|
▷ |