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rev.2.0 _00 cmos temperature sensor ic s-8110c/8120c series seiko instruments inc. 1 the s-8110c/8120c series is a family of high-precision temperature sensor ics on a single chip with a linear output voltage for temperature changes. each chip is composed of a temperature sensor, a constant current circuit, and an operational amplifier. it can be used at temperatures ranging from ?40 c to 100 c. these devices have much better linearity than other temperature sensors such as thermistors, and can be used for a wide range of temperature control applications. ? features ? temperature accuracy s-8110c series: 5.0 c (?30 to + 100 c) s-8120c series: 2.5 c (?30 to + 100 c) ? linear output voltage ?8.20 mv/ c typ. ta = ?30 c: 1.951 v typ. ta =+ 30 c: 1.474 v typ. ta =+ 100 c: 0.882 v typ. ? nonlinearity 0.5 % typ. (?20 to + 80 c) ? wide power supply voltage operation v dd = 2.4 to 10.0 v ? low current consumption 4.5 a typ. ( + 25 c) ? built-in operational amplifier ? v ss standard output ? ultra-small plastic package sc-82ab, 4-pin snb(b) ? applications ? high-frequency circuits such as cellular phones and radio equipment ? compensation of oscillation frequency in crystal oscillator ? lcd contrast compensation ? compensation of amplifier gain ? compensation of auto focus circuits ? temperature detection in battery management ? heat prevention for charged batteries or halogen lights ? packages ? sc-82ab (package drawing code: np004-a) ? 4-pin snb(b) (package drawing code: bb004-a)
coms temperature sensor ic s-8110c/8120c series rev.2.0 _00 2 seiko instruments inc. ? block diagram temperature sensor + ? vdd vout vss figure 1
cmos temperature sensor ic rev.2.0 _00 s-8110c/8120c series seiko instruments inc. 3 ? selection guide ? the product types and package types for s-8110c/8120c series can be selected at the user?s request. please refer to the ?product name selection guide? for the construction of the product name and ?product name list? for the full product names. 1. product name selection guide s-81 x 0c xx - xxx - tf ic direction in tape specification *1 product names (abbreviation) *2 dra: s-8110c series drb: s-8120c series package names (abbreviation) nb: sc-82ab bb: 4-pin snb(b) product types 1: temperature accuracy 5.0 c 2: temperature accuracy 2.5 c *1. please refer to the taping drawings. *2. please refer to the product name list. 2. product name list table 1 sc-82ab 4-pin snb(b) s-8110c series s-8110cnb-dra-tf S-8110CBB-DRA-TF s-8120c series s-8120cnb-drb-tf s-8120cbb-drb-tf
coms temperature sensor ic s-8110c/8120c series rev.2.0 _00 4 seiko instruments inc. ? pin configurations table 2 pin no. pin symbol pin description 1 vdd power supply pin 2 vss gnd pin 3 nc *1 no-connection 4 vout output voltage pin *1. the nc pin is electrically open. the nc pin can be connected to vdd or vss. 4 3 1 2 sc-82ab top view figure 2 table 3 pin no. symbol pin description 1 vss gnd pin 2 vdd power supply pin 3 vout output voltage pin 4 nc *1 no-connection 4 3 2 1 4-pin snb(b) top view *1. the nc pin is electrically open. the nc pin can be connected to vdd or vss. figure 3 ? absolute maximum ratings table 4 (ta=25 c unless otherwise specified) items symbols absolute maximum ratings units power supply pin voltage v dd v ss ?0.3 to v ss + 12.0 v output pin voltage v out v ss ?0.3 to v dd +0.3 power dissipation p d sc-82ab 150 mw 4-pin snb(b) 60 operating ambient temperature range topr ?40 to +100 c storage ambient temperature range tstg ?40 to +125 caution the absolute maximum ratings are rated values exceeding which the product could suffer physical damage. these values must therefore not be exceeded under any conditions.
cmos temperature sensor ic rev.2.0 _00 s-8110c/8120c series seiko instruments inc. 5 ? electrical characteristics 1. s-8110c series table 5 (ta = 25 c, v dd = 5.0 v, i out = 0 a unless otherwise specified) item symbol condition min. typ. max. unit test circuit power supply voltage v dd ? 2.4 ? 10.0 v 1 output voltage v out ta = ? 30 c 1.911 1.951 1.991 ta = + 30 c 1.434 1.474 1.514 ta = + 100 c 0.842 0.882 0.922 temperature sensitivity v se ? 30 c ta + 100 c ? 8.40 ? 8.20 ? 8.00 mv/ c ? nonlinearity ? n l ? 20 c ta + 80 c ? 0.5 ? % operating temperature range topr ? ? 40 ? + 100 c current consumption i dd ? ? 4.5 8.0 a 1 line regulation ? v out1 v dd = 2.4 v to 10.0 v ? ? 0.05 %/ v 2 load regulation *1 ? v out2 i out = 0 a to 200 a ? ? 1.0 mv *1. please do not flow sink current into the output voltage pin. 2. s-8120c series table 6 (ta = 25 c, v dd = 5.0 v, i out = 0 a unless otherwise specified) item symbol condition min. typ. max. unit test circuit power supply voltage v dd ? 2.4 ? 10.0 v 1 output voltage v out ta = ? 30 c 1.931 1.951 1.971 ta = + 30 c 1.454 1.474 1.494 ta = + 100 c 0.862 0.882 0.902 temperature sensitivity v se ? 30 c ta + 100 c ? 8.40 ? 8.20 ? 8.00 mv/ c ? nonlinearity ? n l ? 20 c ta + 80 c ? 0.5 ? % operating temperature range topr ? ? 40 ? + 100 c current consumption i dd ? ? 4.5 8.0 a 1 line regulation ? v out1 v dd = 2.4 v to 10.0 v ? ? 0.05 %/ v 2 load regulation *1 ? v out2 i out = 0 a to 200 a ? ? 1.0 mv *1. please do not flow sink current into the output voltage pin.
coms temperature sensor ic s-8110c/8120c series rev.2.0 _00 6 seiko instruments inc. ? test circuits 1. vss v a vout s-8110c/8120c series v vdd figure 4 2. vss vdd vout s-8110c/8120c series v v a i out figure 5
cmos temperature sensor ic rev.2.0 _00 s-8110c/8120c series seiko instruments inc. 7 ? definition of terms 1. output voltage (v out ) v out indicates the output voltage at ta = ?30 c, ta =+ 30 c and ta =+ 100 c. output voltage 0 c + 100 c + 30 c ambient temperature [ta] ? 30 c max. min. figure 6 2. temperature sensitivity (v se ) v se indicates the temperature coefficient of the output voltage calculated using the output voltage at ta= ? 30 c and ta= + 100 c. v se is calculated using the following formula. [ ] 3 * *2 *1 130 v v v out out se ? = output voltage v out (at ta =? 30 c) v out (at ta =+ 100 c) v se 0 c + 100 c + 30 c ambient temperature [ta] ? 30 c figure 7 *1. v out value at ta= + 100 c. [v] *2. v out value at ta= ? 30 c. [v] *3. the difference of the temperature from ta= + 100 c to ta= ? 30 c. [ c]
coms temperature sensor ic s-8110c/8120c series rev.2.0 _00 8 seiko instruments inc. 3. nonlinearity ( ? n l ) ? n l indicates the nonlinearity of the output voltage and is defined as the difference of the characteristic curve of the output voltage and the approximated straight line shown below. ? n l is calculated using the following formula. 100 b a ? n l = 2 * *1 output voltage a v out (at ? 20 c) a b a v out (at + 80 c) (b) actual measurement of output voltage (a) approximated straight line 0 c + 80 c ambient temperature [ta] ? 20 c figure 8 *1. the maximum deviation of the actual measurement of output voltage (b) and an approximated straight line (a) in temperature within ? 20 c to + 80 c. (an approximated straight line is taken as the straight line from which the ?a? becomes the minimum.) *2. the difference of the output voltage within ? 20 c to + 80 c. 4. line regulation ( ? v out1 ) ? v out1 indicates the output voltage dependence on the input voltage. that is, the values express how the output voltage changes, when input voltage is changed under the condition that output current is fixed. 5. load regulation ( ? v out2 ) ? v out2 indicates the output voltage dependence on the output current. that is, the values express how the output voltage changes, when output current is changed under the condition that input voltage is fixed.
cmos temperature sensor ic rev.2.0 _00 s-8110c/8120c series seiko instruments inc. 9 ? precautions ? wiring patterns for vdd pin, vout pin and vss pin should be designed to hold low impedance. when mounting an output capacitor, the distance from the capacitor to the vout pin and to the vss pin should be as short as possible. ? to prevent oscillation, it is recommended to use the external components under the following conditions. output capacitor (c l ): 100 pf or less output resistance (r l ): 500k ? or more vss vdd vout s-8110c/8120c series c l r l v out figure 9 ? please do not connect a pull-up resistor to the output voltage pin. ? the application condition for input voltage, output voltage and load current should not exceed the package power dissipation. ? do not apply an electrostatic discharge to this ic that exceeds the performance ratings of the built-in electrostatic protection circuit. ? in determining output current, attention should be paid to the output current value specified in the table 5 and table 6 for electrical characteristics and the footnote *1 of the table 5 and table 6. ? sii claims no responsibility for any and all disputes arising out of or in connection with any infringement of the products including this ic upon patents owned by a third party.
coms temperature sensor ic s-8110c/8120c series rev.2.0 _00 10 seiko instruments inc. ? typical characteristics temperature (ta) vs. output voltage (v out ) temperature (ta) vs. current consumption (i dd ) 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 ? 40 ? 20 0 20 40 60 80 100 ta [ c] v out [v] 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 ? 40 ? 20 0 20 40 60 80 100 ta [ c ] i dd [ a] v dd = 2.4 v v dd = 5.0 v v dd = 10.0 v error range of each temperature power supply voltage (v dd ) vs. current consumption (i dd ) ?6 ? 5 ? 4 ? 3 ?2 ?1 0 1 2 3 4 5 6 ? 40 ? 20 0 20 40 60 80 100 ta [ c] approximated straight line: v out [mv] = ?8.2 [mv] ta [ c] + 1720 [mv] the difference of the temperature, which is converted with the approximated straight line, and actual temperature [ c] 0 1 2 3 4 5 6 7 8 9 10 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 v dd [v] i dd [ a] ta = 100 c ta = ?40 c ta = 30 c power supply voltage (v dd ) vs. output voltage (v out ) ta = ?40 c 2.030 2.031 2.032 2.033 2.034 2.035 2.036 2.037 2.038 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 v dd [ v ] v out [v] ta = 30 c 1.471 1.472 1.473 1.474 1.475 1.476 1.477 1.478 1.479 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 v dd [v] v out [v] ta = 100 c 0.879 0.880 0.881 0.882 0.883 0.884 0.885 0.886 0.887 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 v dd [v] v out [v]
cmos temperature sensor ic rev.2.0 _00 s-8110c/8120c series seiko instruments inc. 11 load current (i out ) vs. output voltage (v out ) v dd = 2.4 v 0.0 0.5 1.0 1.5 2.0 2.5 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 i out [ma] v out [v] ta = ?40 c ta = 30 c ta = 100 c v dd = 5.0 v 0.0 0.5 1.0 1.5 2.0 2.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 i out [ma] v out [v] ta = ?40 c ta = 30 c ta = 100 c v dd = 10.0 v 0.0 0.5 1.0 1.5 2.0 2.5 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 i out [ma] v out [v] ta = ?40 c ta = 30 c ta = 100 c heat response time (t) vs. output voltage (v out ) 0. 8 0.9 1.0 1.1 1.2 1. 3 1.4 1.5 1. 6 0 30 60 90 120 150 t [s] v out [v] sc-82ab 4-pin snb ( b ) when packages are put into the air of 100 degrees from the air of 25 degrees. 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 0 10 20 30 40 50 60 t [ s ] v out [v] sc-82ab 4-pin snb ( b ) when packages are put into the liquid of 100 degrees from the air of 25 degrees. start up response 1 v / div. 1 v / div. ta = 25 c, c l = 100 pf, r l = 10 m ? 50 s / div. gnd gnd v out v dd ( = 6.0 v) 1 v / div. 1 v / div. ta = 25 c, c l = 100 pf, r l = 10 m ? 50 s / div. gnd gnd v out v dd ( = 2.4 v)

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the information described herein is subject to change without notice. seiko instruments inc. is not responsible for any problems caused by circuits or diagrams described herein whose related industrial properties, patents, or other rights belong to third parties. the application circuit examples explain typical applications of the products, and do not guarantee the success of any specific mass-production design. when the products described herein are regulated products subject to the wassenaar arrangement or other agreements, they may not be exported without authorization from the appropriate governmental authority. use of the information described herein for other purposes and/or reproduction or copying without the express permission of seiko instruments inc. is strictly prohibited. the products described herein cannot be used as part of any device or equipment affecting the human body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus installed in airplanes and other vehicles, without prior written permission of seiko instruments inc. although seiko instruments inc. exerts the greatest possible effort to ensure high quality and reliability, the failure or malfunction of semiconductor products may occur. the user of these products should therefore give thorough consideration to safety design, including redundancy, fire-prevention measures, and malfunction prevention, to prevent any accidents, fires, or community damage that may ensue.

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