? 2000 semtech corp. 652 mitchell road newbury park ca 91320 precision shunt voltage reference sc1004(a) may 1, 2000 1 ? = trimmed bandgap design (0.8%, 0.32% for sc1004a version) ? = wide operating current range 20a to 20ma ? = low dynamic impedance (0.2 ? ) ? = so-8 package features the sc1004(a) is a two terminal precision voltage reference with thermal stability guaranteed over temperature. the sc1004(a) has a typical dynamic output impedance of 0.2 ?. = active output circuitry provides a very sharp turn on characteristic - the minimum operating current is 20a, with a maximum of 20ma. coming with an initial tolerance of 0.8% (0.32% for sc1004a), and with two available voltage options (1.235v and 2.5v) in a small so-8 package, the sc1004(a) is ideally suited for very low power circuitry such as temperature sensors and portable meters. applications ? = micropower circuitry ? = portable meters ? = battery powered systems ? = temperature sensors block diagram cathode anode description pin configuration so-8 lead (top view) tel:805-498-2111 fax:805-498-3804 web:http:// www.semtech.com voltage (1) initial accuracy 1.235 v 2.5 v sc1004cs8-1.2.tr sc1004cs8-2.5.tr 0.8% sc1004acs8-1.2.tr - 0.32% notes: (1) only available in tape and reel packaging. a reel contains 2500 devices. ordering information parameter symbol maximum units reverse current 20 ma operating temperature range t a -40 to +85 c operating junction temperature range t j -40 to +150 c storage temperature range t stg -65 to +150 c lead temperature (soldering) 10 seconds t lead 300 c absolute maximum ratings symbol diagram cathode a node
? 2000 semtech corp. 652 mitchell road newbury park ca 91320 precision shunt voltage reference sc1004(a) may 1, 2000 2 electrical characteristics t a = 25c unless otherwise specified. -1.2 -2.5 parameter symbol condition min typ max min typ max units reverse breakdown voltage, v z i z = 100a t a = 25c 1.225 1.235 1.245 2.480 2.500 2.520 v sc1004 t a = 0 to +70c 1.220 1.235 1.250 2.470 2.500 2.530 t a = -40 to +85c 1.215 1.235 1.255 2.460 2.500 2.535 reverse breakdown voltage, v z i z = 100a t a = 25c 1.231 1.235 1.239 n/a n/a n/a v sc1004a t a = 0 to +70c 1.225 1.235 1.245 n/a n/a n/a t a = -40 to +85c 1.220 1.235 1.245 n/a n/a n/a average temperature coefficient i z(min) i z 20ma 20 20 ppm/c minimum operating current i z(min) t a = -40 to +85c 8 10 12 20 a ratio of change in v z to change in i z i z(min) < i z < 1ma t a = 25c 1.0 1.0 mv t a = -40 to +85c 1.5 1.5 1ma < i z < 20ma t a = 25c 10 10 t a = -40 to +85c 20 20 reverse dynamic impedance z r i z = 100a t a = 25c 0.2 0.6 0.2 0.6 ? t a = -40 to +85c 1.5 1.5 wideband noise (rms) e n i z = 100a, 10hz < f < 10khz 60 120 v long term stability of reverse break- down voltage ? v z t = 1000 hours, t = 25c 0.1c, i z = 100a 20 20 ppm t v z ? ? z z i v ? ?
? 2000 semtech corp. 652 mitchell road newbury park ca 91320 precision shunt voltage reference sc1004(a) may 1, 2000 3 outline drawing - so-8 land pattern - so-8 ecn00-1051
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