CA3160 BiMOS Operational Amplifier – MOSFET Input/CMOS Output High-Impedance Op Amp 8-Pin DIP

The CA3160 is a high-performance BiMOS operational amplifier that represents a unique bridge between high-speed bipolar performance and high-impedance MOSFET inputs. By utilizing PMOS transistors in the input stage, it achieves input currents in the picoampere range, which is thousands of times lower than standard bipolar op-amps. This makes it the professional choice for interfacing with high-impedance sensors like pH probes, photodiodes, and piezoelectric transducers. What truly sets the CA3160 apart is its CMOS output stage. Unlike traditional op-amps that lose a few volts near the power rails, the CA3160 provides a full output swing. It also features strobe terminals, allowing the output to be turned off or pulsed for specialized signal gating applications. The 8-pin DIP package is robust and widely used in scientific instrumentation, medical equipment, and precision analog computers. Whether you are designing an ultra-sensitive electrometer, a high-speed active filter, or a low-distortion audio preamplifier, the CA3160 offers a level of precision and flexibility that few other single-chip op-amps can match.

Key Features:

Ultra-High Input Impedance Features a staggering 1.5 Teraohm input resistance, virtually eliminating loading effects on sensitive circuits.

CMOS Output Stage Capable of swinging the output voltage to within millivolts of either supply rail, maximizing signal range for low-voltage applications.

High Speed and Slew Rate Delivers a 15 MHz unity gain bandwidth and a 10 Volts per microsecond slew rate, ideal for fast signal processing.

Low Input Bias Current Typically 5 picoamps, making it perfect for precision integrators and long-term timing circuits.

Internal Phase Compensation Internally compensated for stable operation at unity gain, simplifying the overall circuit design.