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CIC Size DynamEQ(R) I Dynamic Equalizer - Class D
GS3023 - DATA SHEET
FEATURES * unique twin average detectors * dual channel signal processing * adjustable AGC threshold levels * MPO range externally adjustable * handles high input levels (up to 100 mVRMS) cleanly * designed for CIC instruments * 2:1 compression of high frequencies * designed to drive class D integrated receivers * 65% smaller by volume than DynamEQ(R) I (GS3011) * 50% smaller by volume than DynamEQ(R) I (GS3021) STANDARD PACKAGING * Hybrid Typical Dimensions 0.180 in x 0.115 in x 0.080 in (4.57 mm x 2.92 mm x 2.03 mm) DESCRIPTION DynamEQ(R) I (GS3023) hybrid is a dual channel level dependent input compression amplifier. This WDRC (Wide Dynamic Range Compression) system can be easily configured to provide either a TILL (Treble Increases at Low Level) or wideband response. Twin averaging detector circuits drastically reduce the pumping effects associated with traditional fast attack/slow release systems. The fast detection circuitry cuts in to control the output level during impulsive sounds, but quickly backs out of the way during normal operation. Low distortion, large signal handling capabilities and constant corner frequncy make it ideal for providing loudness growth compensation for many of the mild to moderate cases. The size of the hybrid and variety of electrical access points, offers system design flexibility perfect for ITC and CIC applications. 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 fixed gain stage with MPO control designed to drive class D integrated receivers.
VB 13
CSAD 11
CFAD 14 C6 01
100k VREG 1 REGULATOR SLOW AVERAGE DETECTOR
100k FAST AVERAGE DETECTOR
RTH 12 68k
CURRENT REFERENCE
2:1 COMPRESSION CONTROL
RECTIFIER
VB
CHP 10 C1 IN 9 3n9 12k
48k
-A
-C
D
48k C5 47n
5 OUT
C2 01 MGND 6 50k GND 8 C3 01 7 ABOUT C4 82n
-B
50k 50k 50k
8k4
4 MPO
GS3023
All resistors in ohms, all capacitors in farads unless otherwise stated. Patent Pending.
2 CIN
3 COUT
FUNCTIONAL BLOCK DIAGRAM
Revision Date: May 1998 Document No. 521 - 15 - 03
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3 tel. +1 (905) 632-2996 Web Site: www.gennum.com E-mail: hipinfo@gennum.com
ABSOLUTE MAXIMUM RATINGS
PARAMETER Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range VALUE / UNITS 3 VDC 25 mW -10 C to 40 C -20 C to 70 C
9 MGND 6 VREG
PAD CONNECTION
CIN 2 COUT MPO 4 OUT
1
3
5
7 ABOUT 10 CHP
14 CFAD 11 CSAD 12 R TH
8
GND
13 VB
CAUTION CLASS 1 ESD SENSITIVITY
IN
ELECTRICAL CHARACTERISTICS
Conditions: Input Level VIN = -97dBV, Frequency = 5 kHz, Temperature = 25C, Supply Voltage VB = 1.3 V
PARAMETER Hybrid Current Minimum Voltage Total Harmonic Distortion Input Referred Noise Total System Gain AGC Compression Ratio Threshold Compression Gain Range High Pass Corner Frequency System Gain in Compression OUTPUT STAGE Maximum Output Level MPO Range Stage D Gain REGULATOR Regulator Voltage
SYMBOL I AMP VB THD IRN AV COMP
CONDITIONS VIN = 0VRMS, RMPO = 50k RVC= 15k; VIN= -40dBV at1kHz NFB 0.2 to 10kHz at 12dB/oct
MIN 120 1.1 45
TYP 230 0.1 2.5 48
MAX 380 1 51
UNITS A V % VRMS dB
VIN= -60dBV & -80dBV RVC= 10k; Note 1 CHP - Not Connected VIN = -80dBV VIN = -20dBV, RMPO = 0 VIN = -20dBV, RMPO = 0 to 50k
1.74:1 -
1.95:1 -94 28 3.4 40
2.11:1 42
Ratio dBV dB kHz dB
ARANGE HPC A80 MPO MPO AD VREG
26 38
-14.3 13.8 -
-12.3 15.8 16
-10.3 17.8 -
dBV dB dB
0.89
0.94
0.99
V
All parameters remain as shown in the Test Circuit unless otherwise stated in CONDITIONS column Notes: 1. A RANGE = V P3 [VIN = -97dBV] - V P3 [VIN = -20 dBV] + 77dBV
521 - 15 - 03
2
1.3V 22 13 11 14 C6 01
100k 1 22 REGULATOR SLOW AVERAGE DETECTOR
100k FAST AVERAGE DETECTOR
12 68k
CURRENT REFERENCE
2:1 COMPRESSION CONTROL
RECTIFIER
VB
CHP=01
10 9 C1 3n9 12k
48k
-A
-C
D
48k C5 47n
5 50k
3k9 C2 VIN 6 50k 8 C3 01 C4 82n 01 50k
-B
50k 50k
8k4
4 RMPO=0 GS3023 7 2 RVC 100k 3
All resistors in ohms, all capacitors in farads unless otherwise stated.
Fig.1 Production Test Circuit
1.3V 22 13 11
RECOMMENDATIONS: 2.2F capacitor connected to pin11 No components connected to pin 14
14 C6 01
100k 1 22 CURRENT REFERENCE 68k 10 C1 9 EM3046 or MODEL 39 3n9 C2 01 6 50k 8 C3 7 01 12k 2:1 COMPRESSION CONTROL REGULATOR SLOW AVERAGE DETECTOR
100k FAST AVERAGE DETECTOR
12
RECTIFIER
VB 1.3V 48k
-A
-C
C5
D
47n
5 22 48k
ES3126
-B
50k 50k 50k
8k4
4 C4 82n GS3023 2 RVC 100k 3
All resistors in ohms, all capacitors in farads unless otherwise stated.
Fig. 2 Typical Hearing Instrument Application
3
521 - 15 - 03
VOLUME CONTROL BATTERY 22 1 22 MIC EM3046 or MODEL 39 9 10 11 12 13 + 6 7 14 8 + REC 5 ES3126
14 C6 01 100k FAST AVERAGE DETECTOR RECTIFIER VB 48k
RMPO
2
3
4
22
Fig. 3 Typical Assembly Diagram
1.3V 22 13 11
100k 1 22 REGULATOR SLOW AVERAGE DETECTOR
12
RTH =
CURRENT REFERENCE 68k
2:1 COMPRESSION CONTROL
10 CHP
(normally not connected)
9
C1 3n9 12k
-A
3k9 C2 VIN 6 50k 8 C3 01 C4 82n 01 50k
-B
50k 50k
All resistors in ohms, all capacitors in farads unless otherwise stated.
Fig. 4 Characterization Circuit (used to generate typical curves)
521 - 15 - 03
4
+
7
-C
D
48k 8k4 C5 47n
5 50k
4
GS3023 2 RVC 15k 3
35 VIN=-96dBV 30
VIN=-88dBV
-10 -20 -30 1kHz 2kHz 5kHz RTH =
25 20 VIN=-70dBV
OUTPUT LEVEL (dBV)
VIN=-80dBV
GAIN (dB)
15 10 5 0 -5 -10 -15 20 100 1k 10k 20k VIN=-60dBV
-40 -50 -60 -70 -80
VIN=-40dBV VIN=-20dBV
1kHz 2kHz RTH = 0 5kHz -70 -60 -50 -40 -30 -20 -10 0
-90 -100
-90
-80
FREQUENCY (Hz)
INPUT LEVEL (dBV)
Fig. 5 Frequency Response for Different Input Levels
Fig. 6 I/O Transfer Function for Different Test Frequencies. Shown for Min/Max RTH Resistors Values
30 25 20 V IN = -50dBV
RVC=100k RVC=47k RVC=22k
35 VIN=-96dBV 30 25
GAIN (dB)
15
20 15 10 5
CHP=100nF CHP=68nF CHP=33nF CHP=10nF CHP= No capacitor VIN=-20dBV
GAIN (dB)
10 RVC=15k 5 0
0 -5 -10 -15 20 100 1k 10k 20k -5 -10 -15 20 100
1k
10k
20k
FREQUENCY (Hz)
FREQUENCY (Hz)
Fig. 7 Frequency Response for Different RVC Values
Fig. 8 Corner Frequency vs C HP Capacitor Value
35 30 25 20 RTH = = 100k = 47k = 22k =0
GAIN (dB)
15 10 5 0 -5 -10 -15 20
VIN=-96dBV
100
1k
10k
20k
FREQUENCY (Hz)
Fig. 9 Frequency Characteristics for Different RTH Values
5
521 - 15 - 03
-10 -20 = 5kHz
-12 -14 -16 -18 -20 -22 -24 -26 -28 -30 -32 -34 -36 -38 -40 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 -50 -45 -40 -35 -30 -25 -20 -15 -10 -5 0 RMPO=22k RMPO=33k RMPO=50k = 5kHz RMPO=10k RMPO=0
OUTPUT LEVEL (dBV)
-30
-50 -60 -70 -80 -90
RTH = 0 22k 47k 100k RTH =
OUTPUT (dBV)
-40
INPUT LEVEL (dBV)
INPUT LEVEL (dBV)
Fig. 10 I/O Transfer Function for Different R TH Resistors
Fig. 11 I/O for Various RMPO Settings
1
10
VIN=-40dBV
THD & NOISE (%)
THD & NOISE (%)
=1kHz No Capacitor 1
CHP =0.1F
No Capacitor 0.1 100 0.1 1k 10k -80 -70
CHP =0.1F
-60
-50
-40
-30
-20
FREQUENCY (Hz)
INPUT LEVEL (dBV)
Fig. 12 THD & Noise vs Frequency
Fig. 13 THD & Noise vs Input Level
1
1.0
=4kHz =200Hz
IMD (%)
No Capacitor
IMD (%)
No Capacitor 0.1 CHP=0.1F
CHP =0.1F VIN=-40dBV =200Hz 0.1 3k 10k 100k 0.01 -80 -70 -60 -50 -40 -30 -20
FREQUENCY (Hz)
INPUT LEVEL (dBV
Fig. 14 Intermodulation Distortion (CCIF) vs Frequency
Fig. 15 Intermodulation Distortion (CCIF) vs Level
521 - 15 - 03
6
0.180 (4.57)
0.115 (2.92)
GS3023
XXXXXX
0.090 MAX (2.29)
13
12
1 1
10
9
8
14
7
6
5
4
3
2
1
Dimension units are in inches. Dimensions in parenthesis are in millimetres converted from inches and include minor rounding errors. 1.0000 inches = 25.400 mm. Dimension 0.005 (+0.13) unless otherwise stated. Pad numbers for illustration purposes only. Smallest pad 0.025 x 0.025 (0.64 x 0.64) Largest pad 0.025 x 0.065 (0.64 x 1.65) XXXXXX - work order number. This hybrid is designed for point to point soldering.
Fig. 16 Hybrid Layout & Dimensions
DOCUMENT IDENTIFICATION: DATA SHEET The product is in production. Gennum reserves the right to make changes at any time to improve reliability, function or design, in order to provide the best product possible. REVISION NOTES:
Updated to Data sheet
Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement. (c) Copyright January 1995 Gennum Corporation. All rights reserved.
Printed in Canada.
7
521 - 15 - 03

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