CA3130EZ DIP-8 RRO single op-amp

15MHz, BiMOS Operational Amplifier with
MOSFET Input/CMOS Output

The CA3130 combines the advantage of both CMOS and bipolar transistors.
Gate-protected P-Channel MOSFET (PMOS) transistors are used in the input circuit to provide very-high-input impedance, very-low-input current, and exceptional speed performance. The use of PMOS transistors in the input stage results in common-mode input-voltage capability down to 0.5V below the negative-supply terminal, an important attribute in single-supply applications. A CMOS transistor-pair, capable of swinging the output voltage to within 10mV of either supply-voltage terminal (at very high values of load impedance), is employed as the output circuit. The CA3130 Series circuits operate at supply voltages ranging from 5V to 16V, (+/-2.5V to +/-8V). They can be phase compensated with a single external capacitor, and have terminals for adjustment of offset voltage for applications requiring offset-null capability. Terminal provisions are also made to permit strobing of the output stage.

Features

* MOSFET Input Stage Provides:
– Very High Z_input = 1.5 TOhm (1.5 x 10^12 Ohm) (Typ)
– Very Low I_input = 5pA (Typ) at 15V Operation, 2pA (Typ) at 5V Operation
* Ideal for Single-Supply Applications
* Common-Mode Input-Voltage Range Includes Negative Supply Rail; Input Terminals can be Swung 0.5V Below Negative Supply Rail
* CMOS Output Stage Permits Signal Swing to Either (or both) Supply Rails

Applications

* Ground-Referenced Single Supply Ampli?ers
* Fast Sample-Hold Ampli?ers
* Long-Duration Timers/Monostables
* High-Input-Impedance Comparators (Ideal Interface with Digital CMOS)
* High-Input-Impedance Wideband Amplifiers
* Voltage Followers (e.g. Follower for Single-Supply D/A Converter)
* Voltage Regulators (Permits Control of Output Voltage Down to 0V)
* Peak Detectors
* Single-Supply Full-Wave Precision Recti?ers
* Photo-Diode Sensor Amplifiers