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CA3290A Datasheet(PDF) 1 Page - Intersil Corporation |
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CA3290A Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 10 page 1 ® CA3290, CA3290A BiMOS Dual Voltage Comparators with MOSFET Input, Bipolar Output The CA3290A and CA3290 types consist of a dual voltage comparator on a single monolithic chip. The common mode input voltage range includes ground even when operated from a single supply. The low supply current drain makes these comparators suitable for battery operation; their extremely low input currents allow their use in applications that employ sensors with extremely high source impedances. Package options are shown in the table below. Pinout CA3290/A (PDIP) TOP VIEW Features • MOSFET Input Stage - Very High Input Impedance (ZIN) . . . . . . . . 1.7TΩ (Typ) - Very Low Input Current at V+ = 5V. . . . . . . 3.5pA (Typ) - Wide Common Mode Input Voltage Range (VICR) Can Be Swung 1.5V (Typ) Below Negative Supply Voltage Rail - Virtually Eliminates Errors Due to Flow of Input Currents • Output Voltage Compatible with TTL, DTL, ECL, MOS, and CMOS Logic Systems in Most Applications Applications • High Source Impedance Voltage Comparators • Long Time Delay Circuits • Square Wave Generators • A/D Converters • Window Comparators Schematic Diagram (ONLY ONE IS SHOWN) OUTPUT (A1) INV. INPUT (A1) NON-INV. INPUT (A1) V- 1 2 3 4 8 7 6 5 V+ OUTPUT (A2) INV. INPUT (A2) NON-INV. INPUT (A2) A1 A2 Part Number Information PART NUMBER TEMP RANGE (oC) PACKAGE PKG. NO. CA3290AE -55 to 125 8 Ld PDIP E8.3 CA3290E -55 to 125 8 Ld PDIP E8.3 D1 +VI -VI D2 I1 Q9 I2 Q10 I3 Q11 I4 Q12 Q2 Q3 Q5 Q6 D3 D4 Q4 COMPARATOR NO. 1 Q7 VO Q1 BIASING CIRCUIT FOR CURRENT SOURCES TO COMP. NO. 2 R1 100k Ω Q8 Q15 Q13 Q14 Q16 Q17 Q18 R2 1k Ω R3 5k Ω C1 5pF V- V+ 50 µA 100 µA50µA 100 µA Data Sheet January 2004 FN1049.4 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2004. All Rights Reserved All other trademarks mentioned are the property of their respective owners. OBSO LETE PROD UCT NO RE COMM ENDE D REP LACE MENT conta ct our Techn ical Su pport Cente r at 1-888- INTERS IL or w ww.in tersil. com/t sc |
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