doc.no. 22735 - 3 [rev. december 2003] gb3215/gb3225 preliminary data sheet 1 of 6 gb3215 / gb3225 features ? highly configurable, versatile dsp platform high fidelity multi-channel agc signal processing 95db input dynamic rang e with hrx? headroom extension fully programmable via serial data interface high performance data converters - dual, over- sampled a/ds; over-sampl ed d/a with efficient switched-mode output power amp sound design ? high-fidelity audio quality drives zero-bias 2-terminal receivers multiple communication rates up to 85.3kb/s thinstax? packaging - cic size multi-memory internal/external volume control volume control taper determined by external vc tri-state memory select operation audible memory change indicator thinstax ? packaging hybrid typical dimensions: 0.227 x 0.125 x 0.060 in (5.76 x 3.18 x 1.52 mm) description the gb3215 (gb3225) hybrid is a programmable dsp system based on a multi-channe l compression circuit. it can be used as a platform for a wide range of hearing aid applications. its extensiv e programmability and compact size make it ideal for sophisticated cic applications. the reflowable thinstax? packaging enables easy integration into bte applications. this very versatile dsp hybrid is capable of multiple configurat ions and has a wide range of functions. the gb3215 hybrid contains the gc5051 controller chip and the GA3225 hybrid contains the gc5057 controller chip. the only difference between the gc5051 and the gc5057 is in their power on reset (por) behaviour. for a detailed description of the por behaviour of the gc5051 and gc5057 controller chips, please refer to paragon? digital reference guide , document #20143. the gb3215 and the gb322 5 hybrid code programmed into the gc5051 and the gc5057 controller chips is ?9?. this data sheet is a part of a set of documents available for this product. please refer to ? getting started with paragon? digital ? information note for a list of other documents. block diagram pgnd fmic fgnd rgnd rreg freg rmic t vc out- out+ ms sda vb interface vc a/d frontwave channel 1 channel 2 channel 3 channel 4 eeprom regulator gb3215 a/d a/d d/a hbridge 205n 60n 13n 70n 70n all resistors in ohms, all capacitors in farads unless otherwise stated. 10 11 6 9 8 7 4 3 12 13 14 1 2 5 s (gb3225) paragon ? digital four channel dsp system with f ront w ave ?
gennum corporation 22735 - 3 2 of 6 gb3215 / gb3225 absolute maximum rating pad connection operating temperature range: -10c to 40c storage temperature range: -20c to 70c absolute maximum power dissipation: 25mw maximum operating supply voltage: 1.5vdc absolute maximum supply voltage: 2vdc caution electrostatic sensitive devices do not open pack ages or handle except at a static-free workstation freg rreg rmic rgnd vc sda pgnd out- fmic fgnd t ms vb out+ 1 2 3 4 5 6 7 8 9 10 14 13 12 11 caution level 3 moisture sensitive devices do not open packages except under controlled conditions electrical characteristics conditions: supply voltage v b = 1.3v; temperature = 25c parameter symbol conditions min typ max units hybrid current amp see current consumption section - 700 - a minimum operating supply voltage v boff ramp down 0.94 1.0 1.05 v supply voltage turn on threshold v bon ramp up 1.06 1.10 1.16 v supply voltage hysteresis 90 100 110 mv supply voltage during communication v bc during communication 1.19 1.35 1.5 v hybrid current during communication p programming (<5 ms) - 3.7 - ma eeprom burn cycles note 2 100k - cycles low frequency system bandwidth 100 140 225 hz high frequency system bandwidth 15.2 16 16.8 khz total maximum system gain a v v in = -95 dbv @ 3khz; squelch disabled see note 1. 81 83 85 db converter gain a conv a/d + d/a gain. 27 29 31 db total harmonic distortion thd v in = -40 dbv - 0.05 1 % thd at maximum input thd m v in = -15 dbv, hrx - on - 1.5 3 % clock frequency ? clk 1.945 2.048 2.151 mhz regulator regulator voltage v reg 0.90 0.95 1.00 v regulator supply rejection psrr reg -50-db
gennum corporation 22735 - 3 3 of 6 gb3215 / gb3225 support software all support software for the gb3215 / gb3225 is available from gennum web site www.gennum.com/hip/so ftware/index.html . input input referred noise irn bandwidth 100hz - 8khz - -108 -106 dbv input impedance z in 11.2 16 22 k ? anti-alias filter rejection (input referred) ?=? clk -8khz, v in = -40dbv - 80 - db maximum input level --15-dbv input dynamic range hrx - on, bandwidth 100hz - 8khz - 95 - db audio sample rate 30.4 32 33.6 khz a/d dynamic range bandwidth 100hz - 8khz - 86 - db output maximum rms output voltage 0dbfs ? = 1khz -3 -1 1 dbv d/a dynamic range bandwidth 100hz - 8khz 80 - - db output impedance z out note 2 - - 20 ? volume control volume control resistance r vc 160 200 240 k ? volume control range ? a 47.5 48 48.5 db ms input low state lo 0 - v reg /3 v open state z v reg /3 - 2v reg /3 v high state hi 2v reg /3 - v b v sda input logic 0 voltage note 2 0 - 0.3 v logic 1 voltage note 2 1 - 1.3 v sda output standby pull up current 1.4 2 2.6 a sync pull up current 450 500 550 a logic 0 current (pull down) 225 250 275 a logic 1 current (pull up) 225 250 275 a synchronization time (synchronization pulse width) t sync baud = 0 baud = 1 baud = 2 baud = 3 baud = 4 baud = 5 baud = 6 baud = 7 237 118 59 29.76 14.88 7.44 3.72 1.86 250 125 62.5 31.25 15.63 7.81 3.91 1.95 263 132 66 32.81 16.41 8.20 4.10 2.05 s s s s s s s s note 1: total system gain consists of: wideband system gain + high and low independent channel gains + converter gain total system gain is calibrate d during cal/config process. note 2: sample tested. electrical characteristics (continued) conditions: supply voltage v b = 1.3v; temperature = 25c parameter symbol conditions min typ max units
gennum corporation 22735 - 3 4 of 6 gb3215 / gb3225 figure 1: test circuit figure 2: typical application circuit 3k9 3k9 1k lp filter out v b interface vc a/d frontwave channel 1 channel 2 channel 3 channel 4 eeprom regulator gb3215 a/d a/d d/a hbridge 205n 60n 13n 70n 70nf 200k s 5 10 6 9 8 7 11 4 3 12 13 14 1 2 all resistors in ohms, all capacitors in farads unless otherwise stated. (gb3225) v b vc ms 200k ga3214 interface vc a/d channel 1 channel 2 eeprom s regulator a/d a/d d/a hbridge 205n 60n 13n 70n 2 1 13 12 11 3 4 7 6 8 10 9 5 knowles or microtronic zero-bias receiver (ga3224) all resistors in ohms, all capacitors in farads unless otherwise stated. knowles or microtronic microphones
gennum corporation 22735 - 3 5 of 6 gb3215 / gb3225 figure 3: assembly diagram vc t-coil sw(n.o.) + - cs44 mic + zero biased receiver
22735 - 3 6 of 6 gennum corporation mailing address: p.o. box 489, stn. a, burlington, ontario, canada l7r 3y3 tel. +1 (905) 632-2996 fax. +1 (905) 632-5946 shipping address: 970 fraser drive, burlington, ontario, canada l7l 5p5 gennum japan corporation shinjuku green tower building 27f, 6-14-1, nishi shinjuku, shinjuku-ku, tokyo, 160-0023 japan tel. +81 (03) 3349-5501, fax. +81 (03) 3349-5505 gennum corporation assumes no responsibility for the use of any circuits described herein and makes no representations that th ey are free from patent infringement. ? copyright february 2002 gennum corporation. all rights reserved. printed in canada. gb3215 / gb3225 document identification preliminary data sheet the product is in a preproduction phase and specifications are subject to change without notice. revision notes: gb3225 hybrid code changed. for latest product information, visit www.gennum.com package dimensions pad location gb3215 8 9 10 11 13 4 1 14 12 72 65 3 dimension units are in inches. dimensions in parentheses are in millimetres, converted from inches and include minor rounding errors. 1.0000 inches = 25.400mm dimension tolerances: 0.003 (0.08) unless otherwise stated. work order number: xxxxxx this hybrid is designed for either point-to-point manual soldering or for reflow according to gennum's reflow process (information note 521-45). 0.227 (5.76) 0.125 (3.18) 0.065 max (1.65) 0.0317 (0.806) 0.020 (0.508) pa d no. p a d p o s i t i o n p a d d i m e n s i o n x y xdim ydim 1 2 3 4 5 6 7 8 9 10 11 12 13 14 0 -31.5 -63.0 -94.0 -125.0 -156.0 -187.0 -187.0 -156.0 -125.0 -94.0 -63.0 -31.5 0 0 3 3 3 3 3 3 64.5 64.5 64.5 64.5 64.5 64.5 67.5 23.0 24.0 23.0 23.0 23.0 23.0 23.0 23.0 23.0 23.0 23.0 23.0 24.0 23.0 40.5 46.5 46.5 46.5 46.5 46.5 46.5 46.5 46.5 46.5 46.5 46.5 46.5 40.5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 0 -0.800 -1.600 -2.388 -3.175 -3.962 -4.750 -4.750 -3.962 -3.175 -2.388 -1.600 -0.800 0 0 0.076 0.076 0.076 0.076 0.076 0.076 0.076 1.638 1.638 1.638 1.638 1.638 1.715 0.584 0.584 0.584 0.584 0.584 0.584 0.584 0.584 0.584 0.584 0.610 0.584 0.584 0.584 1.029 1.181 1.181 1.181 1.181 1.181 1.181 1.181 1.181 1.181 1.181 1.181 1.181 1.029 mil mm
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