CA3290: 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.

Key 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
Typical Diagram
Datasheets
TitleTypeUpdatedSizeOther Languages
CA3290, CA3290A DatasheetPDF14 Nov 2014496 KB
Order Information
Part NumberPackage TypeWeight(g)PinsMSL RatingPeak Temp (°C)RoHS Status
CA3290E8 Ld PDIP0.548N/ANA
CA3290, CA3290A Datasheet 14 Nov 2014