? 2005 fairchild semiconductor corporation ds400294 www.fairchildsemi.com august 2000 revised october 2005 ka311 single comparator ka311 single comparator general description the ka311 series is a monolithic, low input current voltage com- parator. the device is also designed to operate from dual or sin- gle supply voltage. features low input bias current: 250na (max) low input offset current: 50na (max) differential input voltage: 30v power supply voltage: single 5.0v to 30v or 15v split supplies ( 15v) offset voltage null capab ility strobe capability ordering information: internal block diagram product number package operating temperature ka311 8-dip 0 70 c KA311DTF 8-sop
www.fairchildsemi.com 2 ka311 schematic diagram
3 www.fairchildsemi.com ka311 absolute maximum ratings (note 1) note 1: the ?absolute maximum ratings? are those values beyond which the safety of the device cannot be guaranteed. the device should n ot be operated at these limits. the parametric values defined in the electrical characteristics t ables are not guaranteed at the absolute maximum ratings. the ?rec ommended operating conditions? table will define the conditions for actual device operation. electrical characteristics (v cc = 15v, v ee = 15v, t a = 25 c, unless otherwise specified) note 2: 0 t a 70 c. note 3: the response time specified is for a 100mv input step with 5mv over drive. parameter symbol value unit total supply voltage v cc |v ee |36 v output to negative supply voltage ka311 v o - v ee 40 v ground to negative voltage v ee 30 v differential input voltage v i(diff) 30 v input voltage v i 15 v output short circuit duration ? 10 sec. power dissipation p d 500 mw operating temperature range t opr 0 70 c storage temperature range t stg 65 150 c parameter symbol conditions min typ max unit input offset voltage v io rs 50k ?1.07.5 mv (note 2) ? ? 10.0 input offset current i io ? 6.0 50.0 na (note 2) ? ? 70.0 input bias current i bias ? 100 250 na (note 2) ? ? 300 voltage gain g v 40.0 200 ? v/mv response time t res (note 3) ? 200 ? ns saturation voltage v sat i o = 50ma, v i 10mv ? 0.75 1.5 v v cc 4.5v, v ee = 0v, i o = 8ma, v i 10mv (note 2) ? 0.23 0.4 strobe ?on? current i str(on) ?3.0?ma output leakage current i sink i str = 3ma, v i 10mv, v o = 15v, v cc = 15v ? 0.2 50.0 na input voltage range v i(r) (note 2) 14.5 to 13.0 14.7 to 13.8 ? v positive supply current i cc ?3.07.5ma negative supply current i ee ? 2.2 5.0 ma strobe current i str ?3.0?ma
www.fairchildsemi.com 4 ka311 typical performance characteristics figure 1. input bias current vs. temperature figure 2. input offset current vs. temperature figure 3. offset voltage vs. input resistance figure 4. input bias current vs. differential input voltage figure 5. common mode limits vs. temperature figure 6. output voltage vs. differential input voltage
5 www.fairchildsemi.com ka311 typical performance characteristics (continued) figure 7. saturation voltage vs. current figure 8. supply current vs. temperature figure 9. leakage current vs. temperature figure 10. supply current vs. supply voltage figure 11. current saturation voltage figure 12. output limiting characteristics
www.fairchildsemi.com 6 ka311 physical dimensions inches (millimeters) unless otherwise noted 8-lead dual-in-line package
7 www.fairchildsemi.com ka311 physical dimensions inches (millimeters) unles s otherwise noted (continued) 8-lead small outline package
www.fairchildsemi.com 8 ka311 single comparator disclaimer fairchild semiconductor reserves the right to make changes without further notice to any products herein to improve reliability, function or design. fairchild does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others. life support policy fairchild?s products are not authorized for use as critical components in life support devices or systems without the express written approval of fairchild semiconductor corporation as used herein: 1. life support devices or s ystems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when properly used in accordanc e with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. 2. a critical component is any component of a life support device or system whose failure to perform can be reason- ably expected to cause the failu re of the life support device or system, or to affect its safety or effectiveness. product status definitions definition of terms datasheet identification product status definition advance information formative or in design this datasheet contains the design specif ications for product develop- ment. specifications may change in any manner without notice. preliminary first production this datasheet contai ns preliminary data, and supplementary data will be published at a later date. fairchild semiconductor reserves the right to make changes at any time without notice in order to improve design. no identification needed full production this datasheet cont ains final specifications . fairchild semiconductor reserves the right to make changes at any time without notice in order to improve design. obsolete not in production this datasheet contains specifications on a product that has been dis- continued by fairchild semiconductor. the datasheet is printed for ref- erence information only.
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