CA5420A Datasheet | Intersil

features gateprotected PMOS transistors in the input circuit to provide very high input impedance, very low input currents (less than 1p A). The internal bootstrapping network features a unique guardbanding technique for reducing the doubling of leakage current for every 10o C increase in temperature. The CA5420A operates at total supply voltages from 2V to 20V either single or dual supply. This operational amplifier is internally phase pensated to achieve stable operation in the unity gain follower configuration. Additionally, it has access terminals for a supplementary external capacitor if additional frequency roll-off is desired. Terminals are also provided for use in applications requiring input offset voltage nulling. The use of PMOS in the input stage results in mon-mode input voltage capability down to 0.45V below the negative supply terminal, an important attribute for single supply application. The output stage uses a feedback OTA type amplifier that can swing essentially from rail-to-rail. The output driving current of 1.0m A (Min) is provided by using nonlinear current mirrors. This device has guaranteed specifications for 5V operation over the full military temperature range of -55o C to 125o C. The CA5420A has the same 8 lead pinout used for the industry standard 741. Features - CA5420A at 5V Supply Voltage with Full Military Temperature Range Guaranteed Specifications - CA5420A Guaranteed to Operate from ±1V to ±10V Supplies - 2V Supply at 300µA Supply Current - 1p A (Typ) Input Current (Essentially Constant to 85o C) - Rail-to-Rail Output Swing (Drive ±2m A Into 1kΩ Load) - Pin patible with 741 Op Amp Applications - p H Probe Amplifiers - Picoammeters - Electrometer (High Z) Instruments - Portable Equipment - Inaccessible Field Equipment - Battery Dependent Equipment (Medical and Military) - 5V Logic Systems - Microprocessor Interface Ordering Information PART NUMBER (BRAND) CA5420AM (5420A) TEMP. RANGE (o C) -55 to 125 PACKAGE 8 Ld SOIC PKG. NO....