schematic diagram precision 1.25 volt micropower voltage reference issue 2 - february 1997 zra124 v r g nd device description the zra124 uses a bandgap circuit design to achieve a precision micropower voltage reference of 1.24 volts. the device is available in small outline surface mount packages, ideal for applications where space saving is important, as well as packages for through hole requirements. the zra124 design provides a stable voltage without an external capacitor and is stable with capacitive loads. the zra124 is recommended for operation between 50 m a and 5ma and so is ideally suited to low power and battery powered applications. excellent performance is maintained to a suggested absolute maximum of 25ma, however the rugged design and 20 volt processing allows the reference to withstand transient effects and currents up to 200ma. superior switching capability allows the device to reach stable operating conditions in only a few microseconds. features small outline sot23, so8 and to92 style packages no stabilising capacitor required typical t c 30ppm/c typical slope resistance 0.65 w 1% tolerance industrial temperature range operating current 50 m a to 5ma transient response, stable in less than 10 m s applications battery powered and portable equipment. metering and measurement systems. instrumentation. precision power supplies. test equipment. data acquisition systems 1 - 21 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 e-line, 2 pin package suffix ? y bottom view connection diagrams part no tol% package partmark ZRA124A01 1 e-line zra12401 zra124f01 1 sot23 12c zra124n801 1 so8 zra12401 zra124r01 1 e-line * zra124r1 zra124y01 1 e-line ? zra12401 * e-line 3 pin reversed ? e-line 2 pin e-line 3 pin ordering information zra124 e-line, 3 pin package suffix ? a bottom view ? pin 1 floating or connected to pin 3
absolute maximum rating reverse current 25ma forward current 25ma operating temperature -40 to 85c storage temperature -55 to 125c power dissipation (t amb =25c) sot23 330mw e-line, 3 pin (to92) 500mw e-line, 2 pin (to92) 500mw so8 625mw 1.24 1.23 1.22 1.21 1.27 1.26 1.25 typical characteristics forward characteristics forward current (ma) temperature (c) reference current (ma) frequency (khz) temperature drift slope resistance v current v i n - (v ) v r - (v ) forw a rd v olta ge ( v ) sl ope res istance ( w ) time ( m s) transient response (i r =150 m m a) 110 0.1 t a =25c slope resistance v frequency -40 -20 0 20 40 60 80 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0.1 1 10 100 1000 i r =150 m a to 5ma 0 0.5 1.0 t a =-40c t a =85c 1 0.1 10 100 1000 10 100 1 0.1 0.01 01 23 4 0 10 0 0.5 1.0 1.5 0 10 0 0.5 1.0 1.5 02 46 8 time ( m s) transient response (i r =5ma) i r =150 m a i r =1ma i r =5ma input output 58k input output 1k8 r ef er ence voltage (v ) s lope res i st ance ( w ) v i n - (v ) v r - (v ) reverse characteristics reverse voltage (v) reve rs e c ur re nt ( m a) 0 0.2 0.4 0.8 1.4 0.6 1.0 0 10 20 30 40 50 60 t a = 2 5 c t a = - 4 0 c t a = 8 5 c 1.2 zra124 electrical characteristics test conditions (unless otherwise stated) t amb =25c symbol parameter conditions limits tol. % units min typ max v r reverse breakdown voltage i r =150 m a 1.228 1.24 1.252 1 v i min minimum operating current 30 50 m a i r recommended operating current 0.05 5 ma t c ? average reverse breakdown voltage temp. co. i r(min) to i r(max) 30 90 ppm/c r s slope resistance 0.65 2 w z r reverse dynamic impedance i r =1ma f = 100hz i ac = 0.1 i r 0.5 1 w e n wideband noise voltage i r =150 m a f = 100hz to 10khz 40 m v(rms) ? t c = v r change x 1000000 v r x temperature change r s = v r change ( i r ( min ) to i r ( max )) i r ( max ) - i r ( min ) zra124 1 - 22 1 - 23
absolute maximum rating reverse current 25ma forward current 25ma operating temperature -40 to 85c storage temperature -55 to 125c power dissipation (t amb =25c) sot23 330mw e-line, 3 pin (to92) 500mw e-line, 2 pin (to92) 500mw so8 625mw 1.24 1.23 1.22 1.21 1.27 1.26 1.25 typical characteristics forward characteristics forward current (ma) temperature (c) reference current (ma) frequency (khz) temperature drift slope resistance v current v i n - (v ) v r - (v ) forw a rd v olta ge ( v ) sl ope res istance ( w ) time ( m s) transient response (i r =150 m m a) 110 0.1 t a =25c slope resistance v frequency -40 -20 0 20 40 60 80 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0.1 1 10 100 1000 i r =150 m a to 5ma 0 0.5 1.0 t a =-40c t a =85c 1 0.1 10 100 1000 10 100 1 0.1 0.01 01 23 4 0 10 0 0.5 1.0 1.5 0 10 0 0.5 1.0 1.5 02 46 8 time ( m s) transient response (i r =5ma) i r =150 m a i r =1ma i r =5ma input output 58k input output 1k8 r ef er ence voltage (v ) s lope res i st ance ( w ) v i n - (v ) v r - (v ) reverse characteristics reverse voltage (v) reve rs e c ur re nt ( m a) 0 0.2 0.4 0.8 1.4 0.6 1.0 0 10 20 30 40 50 60 t a = 2 5 c t a = - 4 0 c t a = 8 5 c 1.2 zra124 electrical characteristics test conditions (unless otherwise stated) t amb =25c symbol parameter conditions limits tol. % units min typ max v r reverse breakdown voltage i r =150 m a 1.228 1.24 1.252 1 v i min minimum operating current 30 50 m a i r recommended operating current 0.05 5 ma t c ? average reverse breakdown voltage temp. co. i r(min) to i r(max) 30 90 ppm/c r s slope resistance 0.65 2 w z r reverse dynamic impedance i r =1ma f = 100hz i ac = 0.1 i r 0.5 1 w e n wideband noise voltage i r =150 m a f = 100hz to 10khz 40 m v(rms) ? t c = v r change x 1000000 v r x temperature change r s = v r change ( i r ( min ) to i r ( max )) i r ( max ) - i r ( min ) zra124 1 - 22 1 - 23
schematic diagram precision 1.25 volt micropower voltage reference issue 2 - february 1997 zra124 v r g nd device description the zra124 uses a bandgap circuit design to achieve a precision micropower voltage reference of 1.24 volts. the device is available in small outline surface mount packages, ideal for applications where space saving is important, as well as packages for through hole requirements. the zra124 design provides a stable voltage without an external capacitor and is stable with capacitive loads. the zra124 is recommended for operation between 50 m a and 5ma and so is ideally suited to low power and battery powered applications. excellent performance is maintained to a suggested absolute maximum of 25ma, however the rugged design and 20 volt processing allows the reference to withstand transient effects and currents up to 200ma. superior switching capability allows the device to reach stable operating conditions in only a few microseconds. features small outline sot23, so8 and to92 style packages no stabilising capacitor required typical t c 30ppm/c typical slope resistance 0.65 w 1% tolerance industrial temperature range operating current 50 m a to 5ma transient response, stable in less than 10 m s applications battery powered and portable equipment. metering and measurement systems. instrumentation. precision power supplies. test equipment. data acquisition systems 1 - 21 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 e-line, 2 pin package suffix ? y bottom view connection diagrams part no tol% package partmark ZRA124A01 1 e-line zra12401 zra124f01 1 sot23 12c zra124n801 1 so8 zra12401 zra124r01 1 e-line * zra124r1 zra124y01 1 e-line ? zra12401 * e-line 3 pin reversed ? e-line 2 pin e-line 3 pin ordering information zra124 e-line, 3 pin package suffix ? a bottom view ? pin 1 floating or connected to pin 3
|
