CA5130A and CA5130 are integrated circuit operationalamplifiers that combine the advantage of both CMOS andbipolar transistors on a monolithic chip. They are designedand guaranteed to operate in microprocessors or logicsystems that use +5V supplies.Gate protected P-Channel MOSFET (PMOS) transistors areused in the input circuit to provide very high inputimpedance, very low input current, and exceptional speedperformance. The use of PMOS field effect transistors in theinput stage results in common mode input voltage capabilitydown to 0.5V below the negative supply terminal, animportant attribute in single supply applications.