linear integrated system s ? 4042 clipper court ? fremont, ca 94538 ? tel: 510 490-9160 ? fax: 510 353-0261 features ultra low noise e n = 0.9nv/ hz (typ) tight matching |v gs1-2 | = 20mv max high breakdown voltage bv gss = 40v max high gain y fs = 20ms (typ) low capacitance 25pf typ improved second source replacement for 2sk389 absolute maximum ratings 1 @ 25 c (unless otherwise stated) maximum temperatures storage temperature -65 to +150 c operating junction temperature -55 to +135 c maximum power dissipation continuous power dissipation @ +125 c 400mw maximum currents gate forward current i g(f) = 10ma maximum voltages gate to source v gss = 40v gate to drain v gds = 40v matching characteristics @ 25 c (unless otherwise stated) symbol characteristic min typ max unit conditions gs2 gs1 v v ? differential gate to source cutoff voltage 20 mv v ds = 10v, i d = 1ma dss2 dss1 i i gate to source saturation current ratio 0.9 - v ds = 10v, v gs = 0v electrical characteristics @ 25 c (unless otherwise stated) symbol characteristic min typ max units conditions bv gss gate to source breakdown voltage 40 v v ds = 0, i d = 100a v gs(off) gate to source pinch-off voltage 0.15 2 v v ds = 10v, i d = 0.1a lsk389a 2.6 6.5 lsk389b 6 12 i dss drain to source saturation current lsk389c 10 20 ma v ds = 10v, v gs = 0 i gss gate to source leakage current 200 pa v gs = -30v, v ds = 0 lsk389 ultra low noise monolithic dual n-channel jfet linear integrated system s *for equivalent single version, see lsk170 family. 1 2 3 4 8 7 6 5 soic-a s1 d1 ss g1 g2 ss d2 s2 5 bottom view to -71 1 2 3 6 7 d1 g1 s1 s2 d2 g2
linear integrated system s ? 4042 clipper court ? fremont, ca 94538 ? tel: 510 490-9160 ? fax: 510 353-0261 electrical characteristics cont. @ 25 c (unless otherwise stated) symbol characteristic min typ max units conditions y fs full conduction transconductance 8 20 ms v ds = 10v, v gs = 0, i dss = 3ma, f = 1khz e n noise voltage 0.9 1.9 nv/ hz v ds = 10v, i d = 2ma, f = 1khz, nbw = 1hz e n noise voltage 2.5 4 nv/ hz v ds = 10v, i d = 2ma, f = 10hz, nbw = 1hz c iss common source input capacitance 25 pf v ds = 10v, v gs = 0, f = 1mhz, c rss common source reverse transfer cap. 5.5 pf v dg = 10v, i d = 0, f = 1mhz, 1. absolute maximum ratings are limiting va lues above which serviceability may be impaired. information furnished by linear integrated systems is believed to be accurate and reliable. however, no responsibility is assu med for its use; nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or p atent rights of linear integrated systems. revised 07 december 2005. a lsk389 - soic-8 - package to-71 6l soic-a 8l 71 soic-8 i dss range 2.6 - 6.5 ma 6 - 12 ma 10 - 20 ma a b c ordering information to-71 six lead 0.230 0.209 dia. dia. 0.195 0.175 0.030 max. 0.500 min. 0.150 0.115 0.019 0.016 dia. 6 leads 3 2 1 5 6 0.046 0.036 45 0.048 0.028 0.100 0.050 7 1 soic 2 3 45 6 7 8 dimensions in inches 0.2284 0.2440 0.189 0.196 0.0075 0.0098 0.021 0.014 0.018 0.05 0 0.0040 0.0098 0.150 0.157 package dimensions
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