features ? 6 programmable parameters ? 38db maximum system gain ? 8:1 compression ratio ? output compression threshold, adjustable over 22db range ? 2nd order active low cut filter adjustable from 530hz to 2.0khz ? low frequency boost ? 1st order high cut filter ? programmable or manual volume control ? multimemory ? averaging detector thinstax? packaging hybrid typical dimensions: 0.195 x 0.110 x 0.070in. (4.95 x 2.79 x 1.78 mm) description the GA3206 programmable hybrid is composed of an agc amplifier and the gp523 controller memory chip. the hybrid features agc-o capability for low distortion output limiting and offers a package size suitable for cic instruments. the compression circuit operates with an 8:1 compression ratio and uses an averaging detector with a time constant of 270ms, selected to provide optimal sound quality over a full range of sound and listening environments. the actual attack and release times are typically 40ms and 150ms respectively when the circuit is fully in the compression region of operation (measured times will vary depending on gain and threshold settings). the GA3206 features six programmable parameters: vc adjustment, threshold adjustment, high and low cut filters, gain trim and low frequency boost. four independent memories add to the flexibility of this hybrid. the output stage is designed as a preamplifier for the class d integrated receiver. the GA3206 hybrid code programmed into the gp523 is 3. preliminary data sheet programmable agc-o cic-size hybrid - GA3206 block diagram revision date: february 2000 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 document no. 522 - 46 - 00 GA3206 gnd1 0 1 0 15 c10 12k 48k regulator 48k -a rect. c8 -f c4 c3 c6 10k 80k 800 v b GA3206 92k 64k c11 r1 r5 c7 gp523 sda 185k r3 33n 45k5 r2 22n ms vc 184k r4 10n 6n8 15n 185k r6 460k r7 c2 c5 92k r8 c12 5n c1 0 1 0 1 0 1 r vc r th c agc b out gnd rect a out a in rf4a rf4b f in v reg sda ms gnd2 c9 5n 2 8:1 compression control sw v reg v b f out v b b v b v b all resistors in ohms, all capacitors in farads, unless otherwise stated. in out gnd a in f out 4 5 6 7 3 1 8 10 9
2 522 - 46 - 00 GA3206 pad connection caution electrostatic sensitive devices do not open packages or handle except at a static-free workstation absolute maximum ratings parameter value supply voltage 2vdc power dissipation 25mw operating temperature range -10 c to 40 c storage temperature range -20 c to 70 c r e t e m a r a pl o b m y ss n o i t i d n o cn i mp y tx a ms t i n u t n e r r u c d i r b y h i p m a -5 7 20 8 3a e g a t l o v y l p p u s m u m i n i mv b -1 . 1-v n o i t r o t s i d c i n o m r a h l a t o td h tv n i v b d 0 6 - =-5 . 01% e s i o n d e r r e f e r t u p n in r id e t h g i e w a-4 . 4-v s m r n i a g m e t s y sa s 4 37 30 4b d k a e p c i t s u o c a t a n i a g m e t s y sa v 5 1 p a t - 2 r , z h k 8 . 2 = y c n e u q e r f3 36 39 3b d , k a e p c i t s u o c a t a n i a g e v i t a l e r 2 e t o n , t u c w o l d a v 1 p a t - 2 r , z h k 8 . 2 = y c n e u q e r f-1 --b d 2 e t o n , z h 0 0 5 t a n i a g e v i t a l e r d a f l 5 1 p a t - 2 r , z h 0 0 5 = y c n e u q e r f-1 --b d 2 e t o n , t u c w o l , z h 0 0 5 t a n i a g e v i t a l e r d a c l 1 p a t - 2 r , z h 0 0 5 = y c n e u q e r f2 2 -9 1 -6 1 -b d 2 e t o n , z h k 5 t a n i a g e v i t a l e r d a f h 5 1 p a t - 2 r , z h k 5 = y c n e u q e r f-3 --b d t n e m t s u j d a m i r t n i a g d a m i r t v 5 1 p a t - 4 r o t 0 p a t - 4 r1 24 27 2b d e g a t l o v r o t a l u g e rv g e r 0 9 85 3 90 0 0 1v m o i t a r n o i t c e j e r y l p p u s r e w o pr r s p9 46 5-b d c g a ) d e r r e f e r p / o ( d l o h s e r h t m u m i x a mh t x a m 5 1 p a t - 3 r , 0 p a t - 1 r1 2 -9 1 -7 1 -v b d ) d e r r e f e r p / o ( d l o h s e r h t m u m i n i mh t n i m 0 p a t - 3 r , 5 1 p a t - 1 r0 5 -7 4 -4 4 -v b d e g n a r n i a g c v d a c v 5 1 p a t - 5 r , 0 p a t - 5 r7 10 23 2b d d l o h s e r h t h g i h o i t a r n o i s s e r p m o ch - p m cv n i 0 p a t - 1 r , v b d 0 3 - o t v b d 0 6 - =5 . 75 . 85 . 9o i t a r d l o h s e r h t w o l o i t a r n o i s s e r p m o cl - p m cv n i 5 1 p a t - 1 r , v b d 0 4 - o t v b d 0 7 - =3 . 63 . 73 . 8o i t a r n i a g a e g a t sa a v n i v b d 0 7 - =4 27 20 3b d e g n a r n i a g n o i s s e r p m o ca e g n a r 1 e t o n5 49 43 5b d t n a t s n o c e m i t c g a t c g a -0 7 2-s m conditions: frequency = 1 khz, temperature = 25 c, supply voltage v b = 1.3v the programmable parameters are adjusted to the following set values unless otherwise specified. (thr) r1 - tap 0, r3 - tap 0; (vc) r5 -tap 15; (gain) r4 - tap 0; (lpf) r8 - tap 24; (hpf) r2 - tap 15; (lf boost) r6 - tap 15, r7 - tap 24; sw closed. electrical characteristics all parameters and switches remain as shown in the test circuit unless otherwise stated in conditions column. note: 1. a range = a a - a a [v in = -20dbv, r1 - tap 15] 2. relative to system gain at acoustic peak. ms sda vc a in f out out v b gnd v reg in 12345 6 7 8 9 10
3 522 - 46 - 00 GA3206 all parameters and switches remain as shown in the test circuit unless otherwise stated in conditions column. fig. 1 production test circuit gnd1 0 1 0 15 c10 12k 48k regulator 48k -a rect. c8 -f c4 c3 c6 10k 80k 800 v b GA3206 92k 64k c11 r1 r5 c7 gp523 185k r3 33n 45k5 r2 22n 184k r4 10n 6n8 15n 185k r6 460k r7 c2 c5 92k r8 c12 5n c1 0 1 0 1 0 1 r vc r th c agc b out gnd rect a out a in rf4a rf4b f in v reg sda ms gnd2 c9 5n 8:1 compression control sw v b f out v b b v b v b 3k9 v in 50k v out all resistors in ohms, all capacitors in farads, unless otherwise stated. 4 5 6 7 3 1 8 10 9 2 r e t e m a r a pl o b m y ss n o i t i d n o cn i mp y tx a ms t i n u e g a t s t u p t u o n i a ga b -1 1-b d e c n a t s i s e r t u p t u or p o -4 2-k w r e t l i f s s a p h g i h y c n e u q e r f r e n r o c m u m i n i m? n i m - c 5 1 p a t - 2 r-0 3 5-z h y c n e u q e r f r e n r o c m u m i x a m? x a m - c 1 p a t - 2 r-0 . 2- z h k t s o o b y c n e u q e r f w o la t s o o b 0 p a t - 7 r , 0 p a t - 6 r , z h 0 0 3 t a4 17 10 2b d r e t l i f s s a p w o l e g n a r t n e m t s u j d a r e t l i fa f p l 4 2 p a t - 8 r o t 0 p a t - 8 r , z h k 5 t a2 15 18 1b d conditions: frequency = 1 khz, temperature = 25 c, supply voltage v b = 1.3v the programmable parameters are adjusted to the following set values unless otherwise specified. (thr) r1 - tap 0, r3 - tap 0; (vc) r5 -tap 15; (gain) r4 - tap 0; (lpf) r8 - tap 24; (hpf) r2 - tap 15; (lf boost) r6 - tap 15, r7 - tap 24; sw closed. electrical characteristics continued support software all support software for the GA3206 and the gp523 is available from gennums web site: www.gennum.com/hip/software r1 C tap 0 r5 C tap15 r2 C tap 15 r6 C tap 15 r3 C tap 0 r7 C tap 24 r4 C tap 0 r8 C tap 24 sw closed table of defaults
4 522 - 46 - 00 GA3206 fig. 3 characterization circuit (used to generate typical curves) fig. 2 typical application circuit gnd1 0 1 0 15 c10 12k 48k regulator 48k -a rect. c8 -f c4 c3 c6 10k 80k 800 v b GA3206 92k 64k c11 r1 r5 c7 gp523 185k r3 33n 45k5 r2 22n 184k r4 10n 6n8 15n 185k r6 460k r7 c2 c5 92k r8 c12 5n c1 0 1 0 1 0 1 r vc r th c agc b out gnd rect a out a in rf4a rf4b f in v reg sda ms gnd2 c9 5n 8:1 compression control sw v b f out v b b v b v b all resistors in ohms, all capacitors in farads, unless otherwise stated. any knowles or microtronic microphone 2 2 v b any knowles class d integrated receiver 4 5 6 7 3 1 8 10 9 2 r7 gnd1 0 1 0 15 c10 12k 48k regulator 48k -a rect. c8 -f c4 c3 c6 10k 80k 800 v b GA3206 92k 64k c11 r1 r5 c7 gp523 185k r3 33n 45k5 r2 22n 184k r4 10n 6n8 15n 185k r6 460k c2 c5 92k r8 c12 5n c1 0 1 0 1 0 1 r vc r th c agc b out gnd rect a out a in rf4a rf4b f in v reg sda ms gnd2 c9 5n 8:1 compression control sw v b f out v b b v b v b 3k9 50k v out all resistors in ohms, all capacitors in farads, unless otherwise stated. pink noise generator or 1khz for i/o 4 5 6 7 3 1 8 10 9 2
5 522 - 46 - 00 GA3206 fig. 4 typical hearing instrument assembly diagram v reg in vc gnd sda f out a in vb out ms + microphone 2 2 battery + + _ receiver to programmer memory select output (dbv) input (dbv) -10 -20 -30 -40 -50 -60 -70 -100 -90 -80 -70 -60 -50 -40 -30 -20 r1 - tap 0 r1 - tap 15 fig. 5 input vs output threshold settings using r1 (tap 0 C 0k w , tap C 64k w ) -70 -60 -50 -40 -30 -20 -10 -100 -90 -80 -70 -60 -50 -40 -30 -20 output (dbv) input ( dbv ) r3 - tap 15 r3 - tap 0 fig. 6 input vs output threshold settings using r3 (tap 0 C 0k w , tap 15 C 185k w ) typical performance curves
6 522 - 46 - 00 GA3206 0 5 10 15 20 25 30 35 40 45 100 1k 10k gain (db) frequency (hz) r2 - tap 15 r2 - tap 1 fig. 12 frequency response vs r2 low cut settings (tap 0 C 0k w , tap 15 C 45.5k w ) 0 5 10 15 20 25 30 35 40 45 100 1k 10k gain (db) frequency (hz) r8 - tap 24 r8 - tap 0 fig. 11 frequency response vs r8 high cut settings (tap 0 C 0k w , tap 24 C open) -70 -60 -50 -40 -30 -20 -10 -100 -90 -80 -70 -60 -50 -40 -30 -20 output (dbv) input ( dbv ) r1 - tap 0, r3 - tap 15 r1 - tap 15, r3 - tap 0 fig. 7 input vs output threshold settings in 1db steps using r1 and r3 (see GA3206 application note, document 522-56) 0 5 10 15 20 25 30 35 40 45 100 1k 10k gain (db) frequency (hz) r4 - tap 0 r4 - tap 15 fig. 8 frequency response vs r4 gain trim settings (tap 0 C 0k w , tap 15 C 184k w ) fig. 9 frequency response vs r5 volume control settings (tap 0 C 7.3k w , tap 15 C 92k w ) 0 5 10 15 20 25 30 35 40 45 100 1k 10k gain (dbv) frequency (hz) r4 - tap 0, r5 - tap 15 fig. 10 gain adjustment in 2db steps using r4 and r5 (see GA3206 application note, document 522-56) 0 5 10 15 20 25 30 35 40 45 100 1k 10k gain (db) frequency (hz) r5 - tap 15 r5 - tap 0
7 522 - 46 - 00 GA3206 0.01 0.1 1 10 10k 100k 3k imd (%) frequency (hz) v in = -40dbv ? = 200hz fig. 17 intermodulation distortion vs frequency 0.01 0.1 1 -80 -70 -60 -50 -40 -30 -20 imd (%) input (dbv) f = 4khz ? = 200hz fig. 16 intermodulation distortion vs input fig. 15 thd vs frequency 0 1 2 3 4 5 6 100 1k 10k thd (%) frequency (hz) r1 - tap 0, r3 - tap 0 r1 - tap 15 r3 - tap 0 0 5 10 15 20 25 30 35 40 45 100 1k 10k gain (db) frequency ( hz ) r2 - tap 15 r2 - tap 1 r6 - tap 1 r7 - tap 10 fig. 13 frequency response vs r2 low cut settings with low frequency boost (see GA3206 application note, document 522-56) thd (%) input ( dbv ) 0.1 1 10 -80 -70 -60 -50 -40 -30 -20 r1 - tap 0, r3 - tap 0 r1 - tap 15, r3 - tap 0 fig. 14 thd vs input
8 522 - 46 - 00 GA3206 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 august 1999 gennum corporation. all rights reserved. printed in canada. revision notes: existing diagrams adjusted; characterization diagram added; graphs and table added; dimension diagram replaced. document identification: preliminary data sheet the product is in pre-production phase and specifications are subject to change without notice. gennum corporation mailing address: p.o. box 489, stn. a, burlington, ontario, canada l7r 3y3 tel. +1 (905) 632-2996 fax +1 (905) 632-2814 shipping address: 970 fraser drive, burlington, ontario, canada l7l 5p5 gennum japan corporation c-101, miyamae village, 2-10-42 miyamae, suginami-ku, tokyo 168-0081, japan tel. +81 (3) 3334-7700 fax: +81 (3) 3247-8839 package dimensions 0.195 (4.95) 0.110 (2.79) 0.075 max (1.91) ms sda vc a in f out 1 2 3 4 5 10 9 8 7 6 GA3206 xxxxxx 0.025 (0.635) 0.0215 (0.546) out v b gnd v reg in dimensions are in inches. dimensions shown in parenthesis are in millimetres converted from inches and include minor rounding errors. 1.000 inches = 25.4mm. dimension tolerances: 0.003 (+0.08) unless otherwise stated. smallest pad size: 0.035 x 0.028in (0.89 x 0.71mm). xxxxxx: work order number. this hybrid is designed for either point-to-point manual soldering or for reflow according to gennums recommended reflow process (information note 521-45). pad no. pad position pad dimension 1 2 3 4 5 6 7 8 9 10 x y xdim ydim 0 -2.5 -2.5 -2.5 -2.5 -57.5 -57.5 -57.5 -57.5 -60.0 0 0.965 1.930 2.896 3.861 3.861 2.896 1.930 0.965 0 0 -0.064 -0.064 -0.064 -0.064 -1.461 -1.461 -1.461 -1.461 -1.524 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 28.0 35.0 40.0 40.0 40.0 40.0 40.0 40.0 40.0 40.0 35.0 0.711 0.711 0.711 0.711 0.711 0.711 0.711 0.711 0.711 0.711 0.889 1.016 1.016 1.016 1.016 1.016 1.016 1.016 1.016 0.889 mm mil 0 38.0 76.0 114.0 152.0 152.0 114.0 76.0 38.0 0 1 2 3 4 5 6 7 8 9 10 pad locations note: centre of pad 1 has coordinates 0, 0.
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