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| DynamEQ(R) I Dynamic Equalizer GS3011 - HYB DATA SHEET FEATURES * handles high input levels (up to 100 mVRMS) cleanly * 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 STANDARD PACKAGING * Hybrid typical dimensions 0.260 in x 0.150 in x 0.120 in (6.6 mm x 3.81 mm x 3.05 mm) DESCRIPTION The DynamEQ(R) I hybrid is a dynamically adaptive loudness growth equalizer. Its gain and frequency response is dependent on the user's environment, and is designed for level dependant frequency response providing treble 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(R) I has two signal paths for dual channel processing 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. VB 8 GND 5 C7 22 R7 100k C6 01 R6 100K 7 VREG 3 C1 22 RTH 9 R1 68k CHP AIN 4 2 C3 01 C2 3n9 3 12k 17 8 REGULATOR 15 SLOW AVERAGE DETECTOR 1 14 FAST AVERAGE DETECTOR 16 2 GC514 0.92V CURRENT REFERENCE 2:1 COMPRESSION CONTROL RECTIFIER VB 24k 5 -A -C +D -+ 340 10 DOUT 4 R2 50k 11 RE 12 -B 13 6 C5 01 R3 50k R5 50k R4 50k 7 6 VC2 VC1 C4 01 11 9 10 MGND 1 GS3011 All resistors in ohms, all capacitors in farads unless otherwise stated. Patent Pending. FUNCTIONAL BLOCK DIAGRAM Document No. 520 - 66 - 07 Revision Date: May 1998 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 GND PAD CONNECTION -10 C to 40 C -20 C to 70 C MGND A IN 1 2 3 4 CHP 5 11 6 C OUT RE CAUTION CLASS 1 ESD SENSITIVITY VREG 7 C IN 8 VB 9 RTH 10 D OUT ELECTRICAL CHARACTERISTICS Conditions: Input Level VIN = -97 dBV, Frequency = 5 kHz, Temperature = 25C, Supply Voltage V B = 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 Minimum Transducer Current Maximum Current Sink Output Impedance RE Voltage REGULATOR Regulator Voltage SYMBOL I AMP VB THD IRN AV COMP CONDITIONS VIN = 0 VRMS RVC = 15 k; VIN = -40 dBV NFB 0.2 to 10 kHz at 12 dB/oct MIN 120 1.1 51 TYP 230 0.2 2.5 54 MAX 330 1 57 UNITS A V % VRMS dB VIN = -70 dBV and -80 dBV RVC = 15 k; Note 1 VIN = -80dBV, R VC = 15 k 1.74:1 - 1.95:1 -94 27 3.4 30 2.11:1 32 Ratio dBV dB kHz dB ARANGE HPC A80 I TR I SINK ZOUT VRE VREG 26 28 130 3 20 48 160 9 24 52 190 28 56 A mA k mV 0.89 0.92 0.97 V All parameters and switches remain as shown in the Test Circuit unless otherwise stated in CONDITIONS column V PX actual voltage measured on the pin at given condition (X is pin number) Notes: 1. A RANGE = V P10 [VIN = -97 dBV] - VP10 [VIN = -20 dBV] + 77 dBV 520 - 66 - 07 2 VB 8 5 C7 22 R7 100k C6 01 R6 100k 7 3 C1 22 9 R1 68k 4 2 C3 01 C2 3n9 3k9 3 12k 17 8 REGULATOR 15 SLOW AVERAGE DETECTOR 1 14 FAST AVERAGE DETECTOR 16 2 GC514 0.92V CURRENT REFERENCE 2:1 COMPRESSION CONTROL RECTIFIER VB 24k 5 RLOAD 1k 10 VB -A -C +D -+ 340 4 11 RE 100 R2 50k 12 -B 13 6 C5 01 R3 50k R5 50k R4 50k 7 6 RVC 100K C4 01 11 9 10 VIN 1 GS3011 All resistors in ohms, all capacitors in farads unless otherwise stated. Fig.1 Production Test Circuit VB 8 5 C7 22 R7 100k C6 01 R6 100k 7 3 C1 22 9 R1 68k 4 2 C3 01 C2 3n9 3 12k 17 8 REGULATOR 15 SLOW AVERAGE DETECTOR 1 14 FAST AVERAGE DETECTOR 16 2 GC514 0.92V CURRENT REFERENCE 2:1 COMPRESSION CONTROL RECTIFIER VB 24k 5 ED1913 EK3024 -A -C +D -+ 340 10 4 11 RE 100 R2 50k 12 -B 13 6 C5 01 R3 50k R5 50k R4 50k 7 6 C4 01 11 9 10 1 GS3011 All resistors in ohms, all capacitors in farads unless otherwise stated. RVC 100K Fig. 2 Typical Hearing Instrument Application 3 520 - 66 - 07 100 EK3024 MIC 1 2 5 11 + 4 3 6 7 8 9 10 ED1913 - + VOLUME CONTROL REC + BAT Fig. 3 Typical Hearing Instrument Assembly Diagram VB 8 5 C7 22 R7 100k C6 01 R6 100k 7 3 C1 22 9 RTH= CHP (Normally not connected) 3k9 4 2 C3 01 C2 3n9 3 12k R1 68k 17 8 REGULATOR 15 SLOW AVERAGE DETECTOR 1 14 FAST AVERAGE DETECTOR 16 2 GC514 0.92V CURRENT REFERENCE 2:1 COMPRESSION CONTROL RECTIFIER VB 24k 5 2xVB=2.6V 1k82 -A -C +D -+ 340 10 4 11 RE 100 R2 50k 12 -B 13 6 C5 01 R3 50k R5 50k R4 50k 7 6 RVC 15K C4 01 11 9 10 V IN 1 GS3011 All resistors in ohms, all capacitors in farads unless otherwise stated. Fig. 4 Characterization Circuit (used to generate typical curves) (Equivalent RMS pink noise used as VIN for all frequency responses) 520 - 66 - 07 4 50 V IN = -96dBV 40 VIN= -90dBV VIN = -70dBV 0 -10 5kHz -20 OUTPUT LEVEL (dBV) 2kHz -30 -40 -50 -60 -70 5kHz 2kHz RTH = 0 1kHz 1kHz RTH = GAIN (dB) 30 VIN = -50dBV 20 VIN = -30dBV VIN = -20dBV 10 0 20 100 1k 10k 20k -80 -100 -90 -80 -70 -60 -50 - 40 -30 -20 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 50 VIN = -50dBV RVC=100 k 40 RVC=47 k 50 VIN=-96dBV 40 No Capacitance GAIN (dB) GAIN (dB) 30 RVC=22 k 30 CHP=68 nF CHP=33nF CHP=10nF 20 RVC=15 k 20 CHP=0.1F 10 10 VIN=-20dBV 0 20 100 1k 10k 20k 0 20 100 1k 10k 20k FREQUENCY (Hz) FREQUENCY (Hz) Fig. 7 Frequency Response for Different RVC Values Fig. 8 Corner Frequency vs CHP Capacitor Value 0 -10 = 1kHz -20 50 RTH = = 100k 40 = 47k = 22k OUTPUT LEVEL (dBV) -30 -40 -50 -60 -70 -80 -100 RTH = RTH = 0 22k 47k 100k 30 =0 GAIN (dB) 20 10 VIN=-96dBV 0 -90 -80 -70 -60 -50 - 40 -30 -20 20 100 1k 10k 20k INPUT LEVEL (dBV) FREQUENCY (Hz) Fig. 9 I/O Transfer Function for Different RTH Resistors Fig. 10 Frequency Characteristics for Different RTH Values 5 520 - 66 - 07 10 1 VIN=-40dBV No Capacitor THD & NOISE (%) 1 THD & NOISE (%) CHP=0.1F 0.1 No Capacitor CHP =0.1F 0.1 0.01 -90 -80 -70 -60 -50 -40 -30 -20 0.01 100 1k 5k INPUT LEVEL (dBV) FREQUENCY (Hz) Fig. 11 THD & Noise vs Input Level Fig. 12 THD & Noise vs Frequency 10 1 VIN=-40dBV CHP=0.1F 1 CHP =0.1F =200Hz IMD (%) IMD (%) No Capacitor 0.1 No Capacitor 0.1 =200Hz =4kHz 0.01 -100 -90 -80 -70 -60 -50 -40 -30 -20 0.01 1k 10k 100k INPUT LEVEL (dBV) FREQUENCY (Hz) Fig. 13 Intermodulation Distortion (CCIF) vs Input Level Fig. 14 Intermodulation Distortion (CCIF) vs Frequency 520 - 66 - 07 6 0.260 (6.60 ) GS3011 XXXXXX 0.130 MAX (3.30 ) MAX 10 9 8 7 6 4 3 2 0.150 (3.81 ) 11 5 1 C5 C4 C3 C2 C6 Dimension units are in inches. Dimensions shown in parenthesis are in millimetres, converted from inches and include minor round-off errors. 1.0000 inches = 25.40mm. Dimensions 0.005 (0.13) unless otherwise stated. Pad numbers for illustration purposes only. Smallest pad 0.035" x 0.020" (pad 2) Largest pad 0.043" x 0.028 (pad 8) XXXXXX - work order number. This hybrid is designed for point to point manual soldering Fig. 15 Hybrid Layout and 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 August 1992 Gennum Corporation. All rights reserved. Printed in Canada. 7 520 - 66 - 07 |
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