Intersil CA3420A
The CA3420A and CA3420 are integrated circuit operational amplifiers that combine PMOS transistors and bipolar transistors on a single monolithic chip. The CA3420A and CA3420 BiMOS operational amplifiers feature gate protected PMOS transistors in the input circuit to provide very high input impedance, very low input currents (less than 1pA). The internal bootstrapping network features a unique guardbanding technique for reducing the doubling of leakage current for every 10oC increase in temperature.| Part No. | CA3420A |
|---|---|
| Datasheet | CA3420A Download |
| Manufacturer |  Intersil |
| Description | 0.5MHz/ Low Supply Voltage/ Low Input Current BiMOS Operational Amplifiers |
| Buy | Stock & Price |
FEATURES
● 2V Supply at 300µA Supply Current● 1pA Input Current (Typ) (Essentially Constant to 85oC)
● Rail-to-Rail Output Swing (Drive ±2mA into 1kΩ Load)
● Pin Compatible with 741 Operational Amplifiers
APPLICATIONS
● pH Probe Amplifiers● Picoammeters
● Electrometer (High Z) Instruments
● Portable Equipment
● Inaccessible Field Equipment
● Battery-Dependent Equipment (Medical and Military) Functional Diagram X1 MOS BIPOLAR Ordering Information PART NUMBER CA3420AT CA3420E TEMP. RANGE (oC) -55 to 125 -55 to 125 PACKAGE 8 Pin Metal Can 8 Ld PDIP PKG. NO. T8.C E8.3 X1 + MOS BIPOLAR BUFFER AMPS; BOOTSTRAPPED INPUT PROTECTION NETWORK HIGH GAIN (50K) OTA BUFFER (X2) Pinouts CA3420 (PDIP) TOP VIEW 1 2 3 4 8 STROBE CA3420 (METAL CAN) TOP VIEW TAB STROBE 7 V+ + 8 1 OFFSET NULL INV. INPUT NON-INV. INPUT V- OFFSET NULL INV. 2 INPUT + 7 V+ 6 OUTPUT 5 OFFSET NULL - 6 OUTPUT 5 OFFSET NULL NON-INV. 3 INPUT 4 V- 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
