CA3290
BiMOS Dual Voltage Comparators with MOSFET Input, Bipolar Output
Not Recommended for New Designs.Contact our Technical Support Center at 1-888-INTERSIL.
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
Description
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.
Applications
- High Source Impedance Voltage Comparators
- Long Time Delay Circuits
- Square Wave Generators
- A/D Converters
- Window Comparators
