® DynamEQ -1 Dynamic Equalizer-Reflowable GS3030 - DATA SHEET FEATURES DESCRIPTION • handles high input levels (up to 100 mVRMS) cleanly • low THD and IMD distortion • unique twin average detectors • dual channel signal processing The DynamEQ® -1 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. • adjustable AGC threshold levels • highpass filter with adjustable corner frequency • 2:1 compression of high frequencies DynamEQ®-1 has two signal paths for dual channel processing incorporating 4 amplifying stages ( A, B, C, D ) and the AGC processing circuit. ® • 26% smaller than original DynamEQ -1 GS3011 STANDARD PACKAGING 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. • Hybrid Typical Dimensions 0.250 in x 0.115 in x 0.070 in (6.35 mm x 2.92 mm x 1.78 mm) VB CSAD GND 5 15 14 100nF GND 13 CREG 12 100k CREG VREG 10 REGULATOR FAST AVERAGE DETECTOR 2:1 COMPRESSION CONTROL CURRENT REFERENCE RTH 1 100k SLOW AVERAGE DETECTOR R1 68k RECTIFIER VB CHP 11 24k C2 IN 12k -A 9 C3 R2 0µ1 50k 3 OUT -C 3n9 D 11 2 RE 1k -B 50k 515 50k MGND 8 50k GND 4 0µ1 GS3030 0µ1 7 All resistors in ohms, all capacitors in farads unless otherwise stated. Patent Pending. CIN 6 COUT FUNCTIONAL BLOCK DIAGRAM Revision Date: May 1998 Document No. 521 - 22 - 04 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: [email protected] ABSOLUTE MAXIMUM RATINGS PAD CONNECTION PARAMETER CSAD GND VALUE / UNITS Supply Voltage 3 VDC Power Dissipation 25 mW Operating Temperature Range -10° C to 40° C Storage Temperature Range -20° C to 70° C RTH GND CREG 1 11 14 15 RE 2 OUT 3 CAUTION CLASS 1 ESD SENSITIVITY 4 GND 5 6 13 12 7 8 10 9 CHP VREG VB COUT CIN MGND IN ELECTRICAL CHARACTERISTICS Conditions: Input Level VIN = -97 dBV, Frequency = 5 kHz, Temperature = 25°C, Supply Voltage V B = 1.3 V PARAMETER SYMBOL CONDITIONS Hybrid Current I AMP Minimum Voltage VB Total Harmonic Distortion THD RVC= 15kΩ; VIN= -40dBV at1kHz Input Referred Noise IRN NFB 0.2 to 10kHz at 12dB/oct Total System Gain AV VIN = 0V RMS MIN TYP 90 190 MAX 300 UNITS 1.1 - - V - 0.1 1 % µVRMS µA - 2.5 - 52.5 55.5 58.5 1.74:1 1.95:1 2.11:1 Ratio dB AGC Compression Ratio COMP VIN= -60dBV & -80dBV, RVC= 15k Compression Gain Range ARANGE RVC= 15kΩ; Note 1 High Pass Corner Frequency ƒ HPC CHP - not connected System Gain in Compression A80 VIN = -80dBV Minimum Transducer Current I TR RE - not connected Maximum Current Sink Threshold - -94 - dBV 26 28 - dB - 3.4 - kHz 45 47 49 dB 130 160 190 µA I SINK 3 9 - mA Output Impedance ZOUT 20 24 28 kΩ RE Voltage VRE 52 56 60 mV 0.89 0.95 0.99 OUTPUT STAGE REGULATOR Regulator Voltage VREG 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 P3 [VIN = -97dBV] - V P3 [VIN = -20 dBV] + 77dBV 521 - 22 - 04 2 V CSAD 1.3V 2µ2 5 15 14 100nF 13 CREG 2µ2 100k 12 10 REGULATOR FAST AVERAGE DETECTOR 2:1 COMPRESSION CONTROL CURRENT REFERENCE 1 100k SLOW AVERAGE DETECTOR R1 68k RECTIFIER 1kΩ 24k 11 CHP 0µ1 1.3V VB 12k C2 -A 9 3 -C D 3n9 3k9 11 2 VIN C3 R2 0µ1 50k 515 1k -B 50k RE 100 50k 8 50k 4 0µ1 GS3030 0µ1 6 7 RVC All resistors in ohms, all capacitors in farads unless otherwise stated. 100k Fig.1 Production Test Circuit CSAD 1.3V 2µ2 5 15 14 100nF 13 CREG 2µ2 100k 12 10 10 REGULATOR FAST AVERAGE DETECTOR 2:1 COMPRESSION CONTROL CURRENT REFERENCE 1 100k SLOW AVERAGE DETECTOR R1 68k 1.3V RECTIFIER VB 24k 11 C2 12k -A 9 3 -C D 3n9 EK3024 ED1913 or MODEL 2313 MODEL 39 MGND 11 2 C3 R2 0µ1 50k -B 1k 50k 515 RE 100 50k 8 50k 4 0µ1 GS3030 0µ1 7 6 RVC All resistors in ohms, all capacitors in farads unless otherwise stated. 100k Fig. 2 Typical Hearing Instrument Application 3 521 - 22 - 04 VOLUME CONTROL BATTERY + - MIC+ + EK3024 or MODEL 39 REC 10 9 8 7 5 6 ED1913 or MODEL 2313 4 3 2 12 13 14 15 11 1 100Ω + + CREG 2µ2 CSAD 2µ2 Fig. 3 Typical Assembly Diagram CSAD 1.3V 2µ2 15 5 CREG 14 100nF 13 2µ2 12 100k 10 REGULATOR CHP (Normally not connected) FAST AVERAGE DETECTOR 2:1 COMPRESSION CONTROL CURRENT REFERENCE 1 RTH = ∞ 100k SLOW AVERAGE DETECTOR R1 68k RECTIFIER 2.6V VB 1k82 24k 11 C2 12k -A 9 3 -C D 3n9 3k9 11 2 VIN C3 R2 0µ1 50k 1k -B 50k 515 50k 8 50k 4 0µ1 GS3030 0µ1 6 7 All resistors in ohms, all capacitors in farads unless otherwise stated. RVC 15k Fig. 4 Characterization Circuit (used to generate typical curves) 521 - 22 - 04 4 RE 100 0 45 V IN=-96dBV 40 VIN=-88dBV -10 1kHz VIN=-80dBV -20 OUTPUT LEVEL (dBV) 35 GAIN (dB) 30 V IN=-60dBV 25 20 V IN=-40dBV 15 VIN=-20dBV 10 2kHz -30 5kHz -40 RTH = ∞ -50 1kHz -60 2kHz -70 5 -80 -100 0 20 100 1k 10k RTH = 0 20k -90 -80 5kHz -70 -60 -50 -40 -30 -20 -10 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 45 45 VIN=-96dBV 40 VIN = -50dBV 40 RVC=100kΩ 35 35 30 RVC=22kΩ 25 GAIN (dB) GAIN (dB) CHP=100nF RVC=47kΩ 20 RVC=15kΩ 15 30 CHP=68nF 25 CHP=33nF CHP=10nF 20 CHP=Not conn 15 V IN=-20dBV 10 10 5 5 0 0 20 100 1k 10k 20k 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 0 45 -10 40 RTH = ∞ ƒ = 5kHz 35 30 -30 GAIN (dB) OUTPUT LEVEL (dBV) -20 -40 RTH = 0Ω -50 22kΩ 47kΩ 100kΩ RTH = ∞ -60 -70 -80 -100 = 100kΩ = 47kΩ = 22kΩ =0 25 20 15 10 5 -90 -80 -70 -60 -50 -40 -30 -20 0 20 -10 VIN=-96dBV 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 5 521 - 22 - 04 10 1 V IN=-40dBV ∆ ƒ=200Hz IMD (%) THD & NOISE (%) No Capacitor 1 CHP=0.1µF 0.1 CHP =0.1µF 0.1 No Capacitor 0.01 0.01 -90 -80 -70 -60 -50 -40 -30 1k -20 10k 100k FREQUENCY (Hz) INPUT LEVEL (dBV) Fig. 11 THD & Noise vs Input Level Fig. 12 Intermodulation Distortion (CCIF) vs Frequency 0.250 (6.35) 0.115 (2.92) GS3030 XXXXXX 0.080 MAX (2.03) 1 11 15 14 13 12 7 8 2 3 4 5 6 10 9 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 0.020 x 0.027 (0.51 x 0.69) Largest pad 0.025 x 0.041 (0.64 x 1.04) XXXXXX - work order number. This hybrid is designed to be reflowable for Gennum's reflow process profile. For more information contact Gennum Corporation. Fig. 13 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. © Copyright October 1994 Gennum Corporation. All rights reserved. 521 - 22 - 04 6 Printed in Canada.