gs3020 Gennum Corporation, gs3020 Datasheet

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gs3020

Manufacturer Part Number
gs3020
Description
Dynamic Equalizer Corporation
Manufacturer
Gennum Corporation
Datasheet
FEATURES
• handles high input levels (up to 100 mV
• low THD and IMD distortion
• unique twin average detectors
• dual channel signal processing
• adjustable AGC threshold levels
• highpass filter with adjustable corner frequency
• 2:1 compression of high frequencies
• no external capacitors or resistors required
• 30% smaller by volume than DynamEQ
STANDARD PACKAGING
• Hybrid Typical Dimensions
Revision Date: May 1998
cleanly
MGND
V
GND
C
REG
R
HP
IN
TH
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3 tel. +1 (905) 632-2996
10
11
All resistors in ohms, all capacitors in farads unless otherwise stated.
Patent Pending.
4
9
8
1
0.250 in x 0.115 in x 0.115 in
(6.35 mm x 2.92 mm x 2.92 mm)
C1
2µ2
C2
3n9
C3
0µ1
R1
68k
Web Site: www.gennum.com E-mail: hipinfo@gennum.com
REGULATOR
V
5
B
12k
R2
50k
FUNCTIONAL BLOCK DIAGRAM
®
REFERENCE
RMS)
CURRENT
I GS3011
- B
DETECTOR
AVERAGE
50k
2µ2
C7
SLOW
100k
- A
COMPRESSION
CONTROL
2:1
50k
DESCRIPTION
The DynamEQ
growth equalizer. Its gain and frequency response is
dependent on the user's environment, and is designed for
level dependant frequency response providing
increase at low levels (TILL). The unique twin averaging
detector circuit dramatically reduces pumping effects and
is optimized for mild to moderate hearing loss.
DynamEQ
incorporating 4 amplifying stages ( A, B, C, D ) and the
AGC processing circuit.
Stage A is a highpass channel with 2:1 compression,
Stage B is a wideband unity gain buffer. The sum of the two
paths gives a high frequency boost to low level signals,
which gradually compresses to a flat response at high
input levels. Stage C is used for volume control adjustment,
while stage D is a class A power amplifier with receiver
bias current adjustment.
50k
DETECTOR
C4
0µ1
AVERAGE
C6
0µ1
FAST
100k
0µ1
C5
®
RECTIFIER
I has two signal paths for dual channel processing
®
I hybrid is a dynamically adaptive loudness
C
IN
7
- C
Dynamic Equalizer
C
GS3020 - DATA SHEET
6
OUT
24k
1k
DynamEQ
D
V B
GS3020
Document No. 521 - 05 - 04
515
11
2
3
OUT
R
E
treble
®
I

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gs3020 Summary of contents

Page 1

... AVERAGE DETECTOR DETECTOR 2:1 CURRENT COMPRESSION RECTIFIER REFERENCE CONTROL - 50k 50k 50k C5 0µ1 C4 0µ1 FUNCTIONAL BLOCK DIAGRAM ® DynamEQ Dynamic Equalizer GS3020 - DATA SHEET treble V B 24k 3 OUT - 515 1k GS3020 OUT Document No. 521 - ...

Page 2

ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range CAUTION CLASS 1 ESD SENSITIVITY ELECTRICAL CHARACTERISTICS Conditions: Input Level V = -97 dBV, Frequency = 5 kHz, Temperature = 25 C, Supply Voltage V IN ...

Page 3

... B 50k 50k 50k 50k Fig. 2 Example of Hearing Instrument Application 3 1. 24k 515 100 GS3020 100K 1. ED1913 or MODEL 2313 24k 515 100 GS3020 100k 521 - ...

Page 4

... SLOW FAST AVERAGE REGULATOR AVERAGE DETECTOR DETECTOR 2:1 CURRENT COMPRESSION REFERENCE CONTROL R1 68k 12k - 50k 50k 50k 50k REC ED1913 or MODEL 2313 3 100 RECTIFIER V B 24k 515 GS3020 15k 2.6V 1k82 R E 100 ...

Page 5

V =-96dBV 100 1k FREQUENCY (Hz) Fig. 5 Frequency Response for Different Input Levels -50dBV ...

Page 6

... C HP =0.1 F 0.1 0.01 -90 -80 -70 -60 -50 INPUT LEVEL (dBV) Fig. 11 THD & Noise vs Input Level GS3020 0.115 (2.92) XXXXXX 0.125 MAX (3.18 Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement. ...

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