Revised October 2005 KA311 Single Comparator General Description The KA311 series is a monolithic, low input current voltage comparator. The device is also designed to operate from dual or single supply voltage. Features O Low Input Bias Current: 250nA (Max) O Low Input Offset Current: 50nA (Max) O Differential Input Voltage: r30V O Power Supply Voltage: Single 5.0V to 30V or 15V Split Supplies (r15V) O Offset Voltage Null Capability O Strobe Capability Ordering Information: Product Number Package KA311 8-DIP KA311DTF 8-SOP Operating Temperature 0 a 70qC Internal Block Diagram © 2005 Fairchild Semiconductor Corporation DS400294 www.fairchildsemi.com KA311 Single Comparator August 2000 KA311 Schematic Diagram www.fairchildsemi.com 2 KA311 Absolute Maximum Ratings(Note 1) Parameter Total Supply Voltage Output to Negative Supply Voltage KA311 Ground to Negative voltage Differential Input Voltage Input Voltage Output Short Circuit Duration Power Dissipation Symbol Value Unit VCC |VEE| 36 V VO - VEE 40 V VEE 30 V VI(DIFF) 30 V VI 15 V – 10 sec. PD 500 mW Operating Temperature Range TOPR 0 a 70 qC Storage Temperature Range TSTG 65 a 150 qC Note 1: The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Electrical Characteristics (VCC = 15V, VEE = 15V, TA = 25qC, unless otherwise specified) Parameter Input Offset Voltage Symbol VIO Conditions RS d 50k: IIO IBIAS GV Response Time tRES Saturation Voltage VSAT (Note 3) IO = 50mA, VI d 10mV VCC t 4.5V, VEE = 0V, IO = 8mA, VI d 10mV Strobe “ON” Current 7.5 – – 10.0 – 6.0 50.0 – – 70.0 – 100 250 – – 300 Unit nA (Note 2) Voltage Gain Max 1.0 nA (Note 2) Input Bias Current Typ – mV (Note 2) Input Offset Current Min 40.0 200 – V/mV – 200 – ns – 0.75 1.5 – 0.23 0.4 – 3.0 – mA – 0.2 50.0 nA V (Note 2) ISTR(ON) ISTR = 3mA, VI t 10mV, VO = 15V, VCC = r15V Output Leakage Current ISINK Input Voltage Range VI(R) Positive Supply Current ICC – Negative Supply Current IEE Strobe Current ISTR (Note 2) 14.5 to 13.0 14.7 to 13.8 – V 3.0 7.5 mA – 2.2 5.0 mA – 3.0 – mA Note 2: 0 d TA 70qC. Note 3: The response time specified is for a 100mV input step with 5mV over drive. 3 www.fairchildsemi.com 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 www.fairchildsemi.com 4 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 5 www.fairchildsemi.com KA311 Physical Dimensions inches (millimeters) unless otherwise noted 8-Lead Dual-In-Line Package www.fairchildsemi.com 6 KA311 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 8-Lead Small Outline Package 7 www.fairchildsemi.com 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: provided in the labeling, can be reasonably expected to result in significant injury to the user. 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or 2. A critical component is any component of a life support (b) support or sustain life, or (c) whose failure to perform device or system whose failure to perform can be reasonwhen properly used in accordance with instructions for use ably expected to cause the failure 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 specifications for product development. Specifications may change in any manner without notice. Preliminary First Production This datasheet contains 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 contains 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 discontinued by Fairchild Semiconductor. The datasheet is printed for reference information only. www.fairchildsemi.com 8