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GA3227

ON Semiconductor
Part Number GA3227
Manufacturer ON Semiconductor
Description Pre-configured DSP System
Published Jan 20, 2016
Detailed Description CONSOLIDATOR GA3227 Pre-configured DSP System for Hearing Aids Description The CONSOLIDATOR GA3227 hybrid is a DSP syst...
Datasheet PDF File GA3227 PDF File

GA3227
GA3227

Overview
CONSOLIDATOR GA3227 Pre-configured DSP System for Hearing Aids Description The CONSOLIDATOR GA3227 hybrid is a DSP system based on a two−channel compression circuit.
It can be configured as a single channel linear device or a single, or dual, channel WDRC device.
It can efficiently replace traditional analog hearing aid compression circuits without compromising fundamental performance requirements.
The Consolidator GA3227 hybrid can be configured as an extended programmable circuit or a trimmer circuit supporting manual configuration.
As a trimmer circuit, it continuously monitors trimmer positions and translates them into the hearing aid parameters of choice.
Also included in the Consolidator GA3227 is an in channel squelch circuit used to attenuate microphone and circuit noise in quiet environments, containing low distortion compression limiting, programmable high and low cut filters, and a fully accessible bi−quadratic filter.
The hybrid code programmed into the Consolidator GA3227 controller chip is ‘2’.
Features • Efficient, High Fidelity 1 or 2−Channel WDRC Signal Processing • Fully Programmable via Serial Data Interface • One DLL Operation • Four Trimmer Inputs plus Volume Control or Programmer Controlled • Flexible Trimmer/Parameter Assignments • Three−Terminal Trimmers • Wideband Level Detection • Choice of Two AGC−I Parametric Adjustment Strategies • 6, 12 or 24 dB/Octave Band Split Filter or Configurable as Single−Channel Compressor • In−Channel, Low−Level Squelch Control (1:2 Expansion) • Output Compression Limiting (AGC−O) • Flexible Pre− and Post−Emphasis Filters • Three Independent Memories • Pulse−Density−Modulated Output Stage Drives Zero−Bias 2−Terminal Receivers • These Devices are Pb−Free and are RoHS Compliant Standard Packaging • Hybrid Typical Dimensions: 0.
150 x 0.
250 x 0.
046 in.
(3.
81 x 6.
35 x 1.
17 mm) www.
onsemi.
com 20 PAD HYBRID CASE TBD PAD CONNECTION VREG VREG2 VIN GND2 17 18 19 20 1 TIN GND 16 2 MGND VC 15 3 TR3 TR1 14 4 TR4 ...


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