100nf 100k 1k - c 11 regulator slow average detector fast average detector current reference 2:1 compression control GS3030 0 1 0 1 12k c3 0 1 c2 3n9 - a - b r1 68k rectifier d 24k v b r2 50k 50k 515 100k 50k 50k 5 8 2 6 9 3 7 10 11 4 1 c sad 13 12 15 14 v b v reg c reg c reg r th r e c hp out gnd gnd in mgnd c out c in gnd dynameq -1 dynamic equalizer-reflowable features ? handles high input levels (up to 100 mv rms) 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 ? 26% smaller than original dynameq ? -1 gs3011 standard packaging ? 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) GS3030 - data sheet description 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. dynameq ? -1 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. functional block diagram ? revision date: may 1998 all resistors in ohms, all capacitors in farads unless otherwise stated. patent pending. 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: hipinfo@gennum.com
521 - 22 - 04 2 parameter symbol conditions min typ max units hybrid current i amp v in = 0v rms 90 190 300 m a minimum voltage v b 1.1 - - v total harmonic distortion thd r vc = 15k w ; v in = -40dbv at1khz - 0.1 1 % input referred noise irn nfb 0.2 to 10khz at 12db/oct - 2.5 - m v rms total system gain a v 52.5 55.5 58.5 db agc compression ratio comp v in = -60dbv & -80dbv, r vc = 15k 1.74:1 1.95:1 2.11:1 ratio threshold - -94 - dbv compression gain range a range r vc = 15k w ; note 1 26 28 - db high pass corner frequency ? hpc chp - not connected - 3.4 - khz system gain in compression a 80 v in = -80dbv 45 47 49 db output stage minimum transducer current i tr r e - not connected 130 160 190 m a maximum current sink i sink 39 -ma output impedance z out 20 24 28 k w r e voltage v re 52 56 60 mv regulator regulator voltage v reg 0.89 0.95 0.99 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) 1 2 3 4 5 12 6789 10 11 13 14 15 caution class 1 esd sensitivity absolute maximum ratings parameter 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 pad connection conditions: input level v in = -97 dbv, frequency = 5 khz, temperature = 25 c, supply voltage v b = 1.3 v electrical characteristics notes: 1. a range = v p3 [v in = -97dbv] - v p3 [v in = -20 dbv] + 77dbv mgnd r th r e out chp v reg gnd v b c in in c out gnd gnd c sad c reg
521 - 22 - 04 3 2 2 r e 100 ed1913 or model 2313 ek3024 model 39 100nf 100k 1k 11 regulator slow average detector fast average detector current reference 2:1 compression control GS3030 r vc 100k mgnd 0 1 0 1 12k c3 0 1 c2 3n9 r1 68k rectifier 24k v b r2 50k 50k 515 100k 50k 50k 1.3v 5 8 2 6 9 3 7 4 1 10 11 1.3v 10 c sad c reg 2 m 2 13 12 15 14 - c - a - b d r vc 100k v in 3k9 chp 0 1 r e 100 1.3v 1k w 100nf 100k 1k 11 regulator slow average detector fast average detector current reference 2:1 compression control GS3030 0 1 0 1 12k c3 0 1 c2 3n9 r1 68k rectifier 24k v b r2 50k 50k 515 2 2 1.3v 100k 50k 50k 5 8 2 6 9 3 7 10 11 4 1 c reg 2 m 2 c sad 13 12 15 14 - c - a - b d fig.1 production test circuit fig. 2 typical hearing instrument application all resistors in ohms, all capacitors in farads unless otherwise stated. all resistors in ohms, all capacitors in farads unless otherwise stated.
521 - 22 - 04 4 volume control battery ed1913 or model 2313 100 w ek3024 or model 39 + + + - 1 2 3 4 5 6 7 13 8 12 9 15 10 14 11 mic rec + + 2? c sad 2? c reg fig. 4 characterization circuit (used to generate typical curves) all resistors in ohms, all capacitors in farads unless otherwise stated. c sad r vc 15k v in 3k9 chp (normally not connected) r e 100 2.6v 1k82 100nf 100k 1k 11 regulator slow average detector fast average detector current reference 2:1 compression control GS3030 0 1 0 1 12k c3 0 1 c2 3n9 r1 68k rectifier 24k v b r2 50k 50k 515 2 2 100k 50k 50k 5 8 2 6 9 3 7 10 11 4 1 1.3v r th = c reg 2 m 2 13 12 15 14 - c - a - b d fig. 3 typical assembly diagram
521 - 22 - 04 5 v in = -50dbv frequency (hz) fig. 7 frequency response for different r vc values 20 100 1k 10k 20k -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 input level (dbv) fig. 9 i/o transfer function for different r th resistors r th = = 100k w = 47k w = 22k w = 0 v in =-96dbv 20 100 1k 10k 20k frequency (hz) fig. 10 frequency characteristics for different r th values -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 input level (dbv) fig. 6 i/o transfer function for different test frequencies. shown for min/max r th resistors values 1khz 2khz 5khz v in =-40dbv r th = 0 r vc =100k w r vc =47k w r vc =15k w ? = 5khz 1khz 2khz 5khz 0 -10 -20 -30 -40 -50 -60 -70 -80 20 100 1k 10k 20k frequency (hz) fig. 5 frequency response for different input levels v in =-96dbv v in =-88dbv v in =-80dbv v in =-60dbv v in =-20dbv 45 40 35 30 25 20 15 10 5 0 0 -10 -20 -30 -40 -50 -60 -70 -80 r th = r vc =22k w 45 40 35 30 25 20 15 10 5 0 20 100 1k 10k 20k frequency (hz) fig. 8 corner frequency vs c hp capacitor value v in =-20dbv v in =-96dbv r th = 0 w 22k w 47k w 100k w r th = 45 40 35 30 25 20 15 10 5 0 45 40 35 30 25 20 15 10 5 0 c hp =100nf c hp =68nf c hp =33nf c hp =10nf c hp =not conn output level (dbv) gain (db) gain (db) gain (db) output level (dbv) gain (db)
521 - 22 - 04 6 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. 1 2 3 4 56789 10 11 GS3030 xxxxxx 0.115 (2.92) 0.250 (6.35) 0.080 max (2.03) 13 12 15 14 -90 -80 -70 -60 -50 -40 -30 -20 input level (dbv) fig. 11 thd & noise vs input level 10 1 0.1 0.01 c hp =0.1 m f no capacitor 1 fig. 12 intermodulation distortion (ccif) vs frequency d ?=200hz no capacitor 0.1 0.01 1k 10k 100k frequency (hz) c hp =0.1 m f v in =-40dbv imd (%) thd & noise (%) 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. gennum corporation assumes no responsibility for the use of any circuits described herein and makes no representations that the y are free from patent infringement. ? copyright october 1994 gennum corporation. all rights reserved. printed in canada. revision notes: updated to data sheet fig. 13 hybrid layout & dimensions
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