out v reg in gnd b out b in 7n4 0 14 c2 c1 c14 80n 81n 92n 81n 37k fast average detector slow average detector control 10k r2 r1 r3 r4 rect. v b 3k3 85k6 42k8 regulator 48k 48k 11k 2m 1m 13k1 12k 1 x - b - a - c 24 db / oct band split filter high frequency exp'der / comp'r low frequency exp'der / comp'r r agc_in r h r l r lo r hi 4:1 1:1 c sad mpo r th b out b in r fc f out a out rec out c fad 83n c6 v ref v reg in gnd c4 c7 c3 100k 2:1 GA3202 12k r th r c 198k mpo r lo r hi 4:1 1:1 2:1 v b c8 8n5 v ba t 8 1 2 13 14 15 3 10 4 5 9 12 11 6 7 8n c5 all resistors in ohms, all capacitors in farads, unless otherwise stated. patent pending dynameq ? ii wdrc system - GA3202 features ? dual channel signal processing ? reflowable hybrid ? 4th order state variable filter ? adjustable crossover frequency ? adjustable compression ratio from 1:1 to 4:1 ? independent compression ratio adjustment for low and high frequency band ? adjustable agc threshold levels ? unique twin average detectors ? > 95db dynamic range ? low thd and imd distortion ? drives class d integrated receivers ? mpo range externally adjustable thinstax ? packaging hybrid typical dimensions: 0.190 x 0.105 x 0.050in. (4.83 x 2.67 x 1.27mm) device description the dynameq ? ii hybrid family is a second generation wide dynamic range compression (wdrc) system. the small hybrid design makes it particularly suitable for cic applications. GA3202 hybrid incorporates 24db/oct filtering. the gain and frequency response is dependant on the user's environment. twin averaging detector circuits are optimized for sound quality during normal listening, without sacrificing comfort during sudden loud inputs. all input signals to dynameq ? ii are processed by 2:1 compression before subsequent band splitting. the 24 db/oct band split filter ahead of the expander/ compressor circuits allows for independent compression ratio adjustments (1:1 to 4:1) in high and low frequency channels. the gain setting stage is followed by a class d integrated receiver preamplifier stage. symmetrical peak clipping is used to achieve mpo adjustment. the GA3202 is designed as a cic alternative to gs3032, gr3032 and gs3028 with mpo adjustment range modifications. preliminary data sheet block diagram document no. 521 - 91 - 03 revision date: september 1999 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 GA3202
2 521 - 91 - 03 GA3202 parameter symbol conditions min typ max units hybrid current i amp - 380 530 m a minimum voltage vb - - - v total harmonic distortion thd v in = -40dbv at 1khz - 0.2 1.0 % thd with maximum allowable input thd m v in = -23dbv, rvc = 47k w -2-% input referred noise irn aweight - 3.0 - m v rms total system gain a v v in = -90dbv 45 48 51 db regulator voltage v reg i load = 30 m a 890 930 1000 mv agc lower threshold th lo -91 -87 -83 dbv upper threshold th hi -36 -32 -28 dbv compression gain range d a gain(-90dbv in ) -gain(-30dbv in ) 37.5 40.5 43.5 db system gain in compression a 60 v in =-60dbv 26 29 32 db min. compression ratio cmp 1 :1 v in =3khz, -60dbv to -40dbv, rhp=1:1 rlp=1:1 0.9 1.0 1.1 ratio max. comp. ratio cmp 4 :1 v in =3khz, -60dbv to -40dbv, rhp=4:1, rlp=4:1 3.6 4.0 4.3 ratio fast detector time constant t fast -8-ms slow detector time constant t slow - 180 - ms filter maximum cross-over frequency ? c_0 r ?c =0 w 3.0 3.9 - khz nominal cross-over frequency ? c_22 r ?c =22k w 1.5 1.9 2.3 khz minimum cross-over frequency ? c_220 r ?c =220k w - 0.9 1.4 khz filter rolloff rate - 24 - db/oct stage a and b --- open loop gain (b) a ol_b -52-db input impedance (a) r in -11- k w output stage stage gain a c v in =-30dbv 7.0 9 11.0 db max output level mpo r vc =220k w ,v in =-25dbv -16 -14 -12 dbv mpo range d mpo r mpo =0 w to 100k w 17 19 21 db output resistance r out -24-k w absolute maximum ratings parameter value 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: supply voltage v b = 1.3 v, frequency = 1 khz, temperature = 25 c all conditions and parameters remain as shown in test circuit unless otherwise stated in "conditions" column. v b b in out in mpo b out r th r ? r hi 4:1 1:1 gnd v reg r lo 7 2:1 1 23 4 6 7 8 9 10 11 12 13 14 5 5 15 gnd caution electrostatic sensitive devices do not open packages or handle except at a static-free workstation electrical characteristics
3 521 - 91 - 03 GA3202 fig. 1 production test circuit fig. 2 typical application circuit r vc 100k log 2 2 v b r mpo 100k log any knowles class d receiver v b gnd 7n4 0 14 c2 c1 c14 80n 81n 92n 81n 37k fast average detector slow average detector control 10k r2 r1 r3 r4 rect. v b 3k3 85k6 42k8 regulator 48k 48k 11k 2m 1m 13k1 12k 1 x - b - a - c 24 db / oct band split filter high frequency exp'der / comp'r low frequency exp'der / comp'r r agc_in r h r l r lo r hi 4:1 1:1 c sad mpo r th b out b in r fc f out a out rec out c fad 83n c6 v ref v reg in c4 c7 c3 100k 2:1 GA3202 12k 198k c8 8n5 v ba t 8 1 2 13 14 15 3 10 4 5 9 12 11 6 7 8n c5 all resistors in ohms, all capacitors in farads, unless otherwise stated. any knowles or microtronics microphone r th 100k log r ? 100k log 200k linear r hi 200k linear r lo v b r ? =22k r vc =100k r mpo =0 50k gnd 7n4 0 14 c2 c1 c14 80n 81n 92n 81n 37k fast average detector slow average detector control 10k r2 r1 r3 r4 rect. v b 3k3 85k6 42k8 regulator 48k 48k 11k 2m 1m 13k1 12k 1 x - b - a - c 24 db / oct band split filter high frequency exp'der / comp'r low frequency exp'der / comp'r r agc_in r h r l r lo r hi 4:1 1:1 c sad mpo r th b out b in r fc f out a out rec out c fad 83n c6 v ref v reg in c4 c7 c3 100k 2:1 GA3202 12k 198k c8 8n5 v ba t 8 1 2 13 14 15 3 10 4 5 9 12 11 6 7 8n c5 all resistors in ohms, all capacitors in farads, unless otherwise stated. r th = 3.9k 2 2 v in 2 2 v b
4 521 - 91 - 03 GA3202 fig. 3 characterization circuit (used to generate typical curves) fig. 4 typical assembly diagram + + battery mic receiver volume control + - 2 2 100k 100k v b b in in out mpo b out r th r ? r hi 1:1 4:1 2:1 1 23 4 6 7 8 11 12 10 9 13 14 v reg r lo 5 15 gnd gnd 2 2 r vc = 100k v b = 1.3v gnd 7n4 0 14 c2 c1 c14 80n 81n 92n 81n 37k fast average detector slow average detector control 10k r2 r1 r3 r4 rect. v b 3k3 85k6 42k8 regulator 48k 48k 11k 2m 1m 13k1 12k 1 x - b - a - c 24 db / oct band split filter high frequency exp'der / comp'r low frequency exp'der / comp'r r agc_in r h r l r lo r hi 4:1 1:1 c sad mpo r th b out b in r fc f out a out rec out c fad 83n c6 v ref v reg in c4 c7 c3 100k 2:1 GA3202 12k 198k c8 8n5 v ba t 8 1 2 13 14 15 3 10 4 5 9 12 11 6 7 8n c5 all resistors in ohms, all capacitors in farads, unless otherwise stated. 3k9 pink noise generator or 1khz for i/o r th = r ? = 100k r mpo = 0 r hi1 =200k r hi2 =0 r lo2 =0 r lo1 =200k 50k
5 521 - 91 - 03 GA3202 frequency (hz) gain (db) 50 40 30 20 10 0 -10 20 100 1k 10k 20k v in = -60 dbv r ivc = 220k w r ivc = 100k w r ivc = 47k w r ivc = 20k w r ivc = 10k w 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 1.0 1.3 1.6 1.9 2.2 2.5 2.8 3.1 3.4 3.7 4.0 compressed ratio (ratio) r lo1 r hi1 r lo1 +r lo2 ( r hi1 +r hi2 ) 50 40 30 20 10 0 -10 20 100 1k 10k 20k frequency (hz) gain (db) v in = -80 dbv v in = -60 dbv v in = -40 dbv v in = -20 dbv fig. 10 i/o transfer function for different r th resistors typical performance curves fig. 5 i/o transfer function for different compression ratios fig. 6 frequency response for different input levels fig. 9 i/o transfer function for different r mpo resistors fig. 7 compression settings resistor ratio for high pass channel (r hi1 & r hi2 ) and low pass channel (r lo1 & r lo2 ) fig. 8 frequency response for different r vc values -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -90 -80 -70 -60 -50 -40 -30 -20 output level (dbv) input level (dbv) 4 :1 2 :1 3 :1 1 :1 1.2 :1 1.5 :1 -50 -40 -30 -20 -50 -40 -30 -20 -10 rmpo = rmpo = 22k rmpo = 0 rmpo = 100k rmpo = 10k output level (dbv) input level (dbv) compression 1:1 output level (dbv) input level (dbv) -10 -20 -30 -40 -50 -60 -70 -100 -90 -80 -70 -60 -50 -40 -30 -20 r th = 0 w r th = 10k w r th = 22k w r th = 47k w r th = r th = 100k w
6 521 - 91 - 03 GA3202 fig. 15 thd and noise vs frequency thd & noise (%) frequency (hz) 10 1 0.1 100 1k 10k v in = -40 dbv fig. 13 crossover frequency representation fig. 11 stage a compressor feedback resistor value fig. 12 expander / compressor resistors values fig. 14 frequency response for different r ?c resistor values fig. 16 thd and noise vs input level r agc resistor value (k w ) input level (dbv) 1000 100 10 1 -100 -90 -80 -70 -60 -50 -40 -30 -20 198k 9k r h & r l resistor values (k w ) input level (dbv) 1.6m 72k 15k 1:1 2:1 4:1 gain (db) frequency (hz) crossover frequency r ? = 50 40 30 20 10 0 -10 20 100 1k 10k 20k v in = -80 dbv 1:1 in low frequency 4:1 in high frequency 4:1 in low frequency 1:1 in high frequency gain (db) frequency (hz) r ? = 50 40 30 20 10 0 -10 20 100 1k 10k 20k v in = -80 dbv 1:1 in low frequency 4:1 in high frequency 100k w 47k w 22k w 10k w 0 w thd & noise (%) input level (dbv) 10 1 0.1 -80 -70 -60 -50 -40 -30 -20 ? = 1khz
7 521 - 91 - 03 GA3202 fig. 17 intermodulation distortion (ccif) vs frequency fig. 18 intermodulation distortion (ccif) vs input level document identification: preliminary data sheet the product is in a preproduction phase and specifications are subject to change without notice. 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 march 1998 gennum corporation. all rights reserved. printed in canada. 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 imd (%) frequency (hz) 10 1 0.1 3k 10k 100k v in = -40 dbv d ?= 200hz imd (%) input level (dbv) 10 1 0.1 0.01 -80 -70 -60 -50 -40 -30 -20 ?= 4khz d ?= 200hz GA3202 xxxxxx 0.105 (2.67) 0.055 max (1.40) 0.190 (4.83) v b b in in out mpo b out r th r ? r hi 1:1 4:1 2:1 1 23 4 6 7 8 9 10 11 12 13 14 v reg r lo 5 15 gnd gnd dimensions are in inches. dimensions in parenthesis are in millimetres converted from inches and include minor rounding errors. 1.0000 inches = 25.400 mm. dimension tolerances 0.003 ( 0.08) unless otherwise stated. minimum pad size: 0.022 x 0.025 (0.56 x 0.64) xxxxxx - work order number. this hybrid is designed to be reflowed according to gennum's recommended reflow process (information note 521-45). revision notes: thinstax? added. changes to note in packaging dimensions.
8 521 - 91 - 03 GA3202
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