features ? high performance alternative to lm4041 ? small outline sot23 ? so8 and e-line alternatives available ? 30 a knee current ? 20ppm/c typical temperature coefficient ? unconditionally stable ? 0.5%, 1%, 2% and 3% tolerance ? contact zetex marketing for availability of tighter tolerance devices applications ? battery powered equipment ? precision power supplies ? portable instrumentation ? portable communications devices ? notebook and palmtop computers ? data acquisition systems ? a/d and d/a converters ? test equipment description the zxre4041 is a bandgap circuit designed to achieve a precision micropower voltage reference of 1.225 volts. the device is available in the small outline sot23 surface mount package which is ideal for applications where space saving is important. sot23 tolerance is available to 0.5% c grade for precision applications. excellent performance is maintained over the 30 a to 12ma operating current range with a typical temperature coefficient of only 20ppm/c. the device has been designed to be highly tolerant of capacitive loads so maintaining excellent stability. this device offers a sot23 pin for pin compatible alternative to lm4041 voltage references. so8 and e-line (to92 style) packages can also be made available. v r g nd sot23 micropower 1.225v voltage reference 1 schematic diagram applications circuit low quiescent reference from a 1.5v battery source. zxre4041 issue 3 - april 2002
absolute maximum ratings reverse current 30ma forward current 10ma operating temperature. -40 to 125c storage temperature. -55 to 125c power dissipation (t amb =25c) sot23 330mw so8 625mw e-line 500mw 2 electrical characteristics test conditions (unless otherwise stated) t amb =25c symbol parameter conditions limits grade units min typ max v r reverse breakdown voltage i r =100 a 1.214 1.208 1.196 1.183 1.225 1.225 1.225 1.225 1.226 1.232 1.244 1.257 c ? d e f v i min minimum knee current 30 a i r recommended operating current range 0.03 12 ma t c ? average reverse breakdown voltage temperature coefficient i r(min) to i r(max) 20 75 ppm/c ? v r ? i r reverse breakdown voltage change with current i r =30 a to 1ma i r =1ma to 12ma 1 10 mv mv z r reverse dynamic impedance i r =1ma f =100hz i ac =0.1 i r 0.2 0.6 ? e n wideband noise voltage i r =8 a to 100 a f=10hz to 10khz 60 v(rms) ? t c = ( v r ( max ) ? v r ( min ) ) x 1000000 v r x ( t ( max ) ? t ( min ) ) note: v r(max) - v r(min) is the maximum deviation in reference voltage measured from -40c to 85c. ? note: c grade sot23 only. 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 reverse voltage (v) reverse characteristics 0 1 2 3 4 5 reverse current (ma) ta=-40c to +85c zxre4041 issue 3 - april 2002
3 typical characteristics -40-20 0 20406080 temperature ( c) temperature drift 1.19 1.20 1.21 1.22 1.23 1.24 1.25 reference voltage (v) 0.01 0.1 1 10 100 frequency (khz) slope resistance v frequency 0.1 1 10 100 slope resistance ( ? ) 20ma 1ma 100 a 0 40 80 120 140 time ( s) transient response 0 0.5 1.5 1.0 10 0 i in ( a) v r (v) 10 a 20ma 0 102030 405060708090100 reference current ( a) noise voltage 0 10 20 30 40 50 60 70 80 wideband noise ( v) 100 10 1 0.10.01 0.001 reference current (ma) slope resistance v current 0 2 4 6 8 10 12 14 slope resistance ( ? ) 25 c -40 c 0.1 1 10 100 1000 forward current (ma) forward characteristics 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 forward voltage (v) 85 c zxre4041 issue 3 - april 2002
4 zetex plc. fields new road, chadderton, oldham, ol9-8np, united kingdom. telephone: (44)161 622 4422 (sales), (44)161 622 4444 (general enquiries) fax: (44)161 622 4420 zetex gmbh zetex inc. zetex (asia) ltd. these are supported by streitfeldstra?e 19 700 veteran?s memorial hwy 3701-04 metroplaza, tower 1 agents and distributors in d-81673 mnchen hauppauge, ny 11788 hing fong road, major countries world-wide germany usa kwai fong, hong kong ? zetex plc 2001 telefon: (49) 89 45 49 49 0 telephone: (631) 360-2222 telephone:(852) 26100 611 fax: (49) 89 45 49 49 49 fax: (631) 360-8222 fax: (852) 24250 494 http://www.zetex.com this publication is issued to provide outline information only which (unless agreed by the company in writing) may not be used, applied or reproduced for any purpose or form part of any order or contract or be regarded as a representation relating to the products or services concerned . the company reserves the right to alter without notice the specification, design, price or conditions of supply of any product or service. ordering information device tol% grade package partmarking zxre4041cf 0.5 c sot23 10j zxre4041df 1 d sot23 10h zxre4041ef 2 e sot23 10g zxre4041ff 3 f sot23 10f zxre4041dn8 ? 1 d so8 zxre4041d zxre4041en8 ? 2 e so8 zxre4041e zxre4041fn8 ? 3 f so8 zxre4041f zxre4041dr ? 1 d e-line zxre4041d zxre4041er ? 2 e e-line zxre4041e zxre4041fr ? 3 f e-line zxre4041f ? contact zetex marketing for availability of these package options note: for tape and reel options add suffix ta to the part number eg zxre4041dfta so8 package suffix ? n8 top view sot23 package suffix ? f top view ? pin 1 floating or connected to pin 2 e-line, 3 pin,rev package suffix ? r bottom view ? pin 3 floating or connected to pin 1 connection diagrams zxre4041 issue 3 - april 2002
zxre4041 issue 3 - april 2002
zxre4041 issue 3 - april 2002
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