NJM2823 -1- ver.2006-03-16 precision micropower shunt voltage reference general description package outline features product variation precision reference voltage 1136mv 0.4% low temperature coefficient 15ppm/ c typ. low quiescent current 60 a max. no output capacitor required tolerates capacitive loads bipolar technology package outline NJM2823f : sot-23-5 (mtp5) ** planning block diagram pin configuration NJM2823 is a precision and low quiescent current shunt voltag e reference. reference voltage form bandgap circuit has guaranteed the high accuracy of the 0.4% with trimming. in addition the temperature drift o f 15ppm/ c typ. was actualized by the temperature compensating circuit. the reference voltage circuit operates by consumed low quiescent curren t of the 60 a for low power technology. the output capacitor is unnecessary by the phase compensating circui t which is built in. tolerates capacitive loads, it is easy to use for application. it is suitable for data converters, instrumentation, and other application s where precision reference is required. NJM2823f NJM2823 njm2824** small pkg njm2820 0.7%, i min =500 a 0.4%, i min =60 a NJM2823f cathode anode fb nc 1 2 3 5 4 nc a node fb v ref cathode
NJM2823 - 2 - ver.2006-03-16 absolute maximum ratings (ta=25c) parameter symbol maximum ratings unit cathode voltage v ka 14 v cathode current i k 20 ma cathode-anode reverse current -i k 10 ma power dissipation p d 200 mw operating temperature range t opr -40 +85 c storage temperature range t stg -40 +125 c recommended operating conditions (ta=25c) parameter symbol min. typ. max. unit cathode voltage v ka v ref ? 13 v cathode current i k 0.06 ? 12 ma electrical characteristics (i k =100 a,ta=25c) parameter symbol test condition min. typ. max. unit reference voltage v ref v fb =v a (*1) 1131.5 1136.0 1140.5 mv v fb =v a , i min i k 1ma (*1) ? 0.15 1.1 mv load regulation ? v ref / ? i k v fb =v a , 1ma i k 12ma (*1) ? 1.5 6 mv reference voltage change vs. cathode voltage change ? v ref / ? v ka v ref v ka 13v, r1=120k ? , r2=val (note 1) (*2) ? -0.52 -2.8 mv/v minimum operating current i min v fb =v a (*1) ? 20 60 a feedback current i fb r1= , r2=120k ? (*2) ? 100 200 na dynamic impedance z ka v fb =v a , f 120hz, i k =1ma, i ac =0.1i k (*1) ? 0.1 ? ? temperature characteristics (i k =100 a, ta=-40c 85c) parameter symbol test condition min. typ. max. unit reference voltage change (note 2) ? v ref_t v fb =v a (*1) ? 5.7 15 8.2 50 mv ppm/ c reference input current change ? i fb_t r1= , r2=120k ? (*2) ? 200 ? na note 1: v ref reference voltage includes error. note 2: reference voltage change is defined as ? v ref_t [mv] = < reference voltage change [ppm/ c] > <-40 c 25 c> . the maximum value of ?reference voltage change? is determined based on sampling evaluation from the 5 initial production lots, and thus not tested in the production test. therefore, these values are for the reference design purpose only. (*1): test circuit (fig.1) (*2): test circuit (fig.2)
NJM2823 - 3 - ver.2006-03-16 test circuit fig.1 v ka =v ref to test circuit fig.2 v ka >v ref to test circuit v fb =v a 2 r i 1 r 2 r 1 v v fb ref ka + ? ? ? ? ? ? + = typical characteristics -6 -4 -2 0 2 4 6 -50 -25 0 25 50 75 100 125 ambient temperature ta ( o c) reference voltage ? v ref (mv) reference voltage vs. temperature (i k =100 a, v fb =v a ) 1134 1135 1136 1137 1138 1139 1140 0.01 0.1 1 10 100 reference voltage v ref (mv) cathode current i k (ma) reference voltage vs. cathode current (v fb =v a , ta=25 o c) 800 900 1000 1100 1200 1300 0 20406080100 reference voltage v ref (mv) cathode current i k ( a) reference voltage vs. cathode current (v fb =v a , ta=25 o c) 1120 1125 1130 1135 1140 1145 1150 02468101214 reference voltage v ref (mv) cathode voltage v ka (v) reference voltage vs. cathode voltage (r1=120k ? , r2=val, i k =100 a, ta=25 o c) v ka i k v ref cathode a node fb input v ka i k v ref cathode a node fb input r1 r2 i fb
NJM2823 - 4 - ver.2006-03-16 typical characteristics 0 2 4 6 8 10 12 14 0.01 0.1 1 10 100 dynamic impedance |z ka | ( ? ) cathode current frequency f (khz) dynamic impedance (i k =1ma, v fb =v a , ta=25 o c) 0 50 100 150 200 -50 -25 0 25 50 75 100 125 ambient temperature ta ( o c) feedback current i fb (na) feedback current vs. temperature (r1=open, r2=120k ? , i k =100 a) 0 0.25 0.5 0.75 1 1.25 1.5 0.001 0.01 0.1 1 10 cathode current i ka (ma) output capasitance co ( f) sefty operating boundary condition (v fb =v a , ta=25 o c) unstable operation region stable operation region ceramic capasitor 0 50 100 150 200 250 0 255075100 ambient temperature ta ( o c) power dissipation p d (mw) power dissipation vs. temperature (device itself, tj= 125 o c) note) oscillation might occur while operating within the rang e of safety curve. so that, it is necessary to make ample margins b y taking considerations of fluctuation of the device.
NJM2823 - 5 - ver.2006-03-16 memo [caution] the specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. the application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.
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