LMC660AIM/NOPB

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The Texas Instruments LMC660AIM/NOPB is a monolithic dual operational amplifier designed particularly for instrumentation and general purpose applications. It features a low bias current, low offset voltage, very low noise, and excellent common-mode rejection ratio. The dual amp has rail-to-rail input and output capability, providing a high dynamic range.

Application Field of the LMC660AIM/NOPB

The LMC660AIM/NOPB is suited for a variety of linear applications, including low level signal amplification, audio preamplifiers, buffer amplifiers, dc-gain stages, transducers, measurement equipment, programmable logic, and industry control systems.

The dual amp is particularly well suited for instrumentation applications due to its low offset voltage, its high common-mode rejection ratio (CMRR), and its dual rail-to-rail input and output. The part operates over a wide range of supply voltages (±4.5 V to ±18 V) and temperatures (40°C to +85°C).

Working Principle of the LMC660AIM/NOPB

The working principle of the LMC660AIM/NOPB is based on its low bias current, low offset voltage, very low noise, and excellent common-mode rejection ratio. Its input stage consists of a differential amplifier with a current source to bias the inputs, resulting in low input bias current and high input impedance. Its high common-mode rejection ratio occurs because the high gain of the input stage prevents fluctuation in the current source from having any effect on the inputs.

The output stage of the LMC660AIM/NOPB uses a MOSFET transistor array which provides rail-to-rail output as well as high current-sourcing/sinking capabilities. This allows the amp to drive loads with low resistance. The part also features low voltage and high power gains and a fast settling time, making it suitable for AC-coupled applications.

The dual amp also includes both short-to-ground and shorted-output protection. Its active protection system uses current limiters and thermal shutdown circuits to protect the device from damage due to overload or overheating. Its output is shutdown if the internal temperature exceeds 165°C.

Conclusion

The Texas Instruments LMC660AIM/NOPB is a monolithic dual operational amplifier designed particularly for instrumentation and general purpose applications. It features low bias current, low offset voltage, very low noise, higher common-mode rejection ratio, rail-to-rail input and output capability, and protection circuits. The LMC660AIM/NOPB is a great choice for low level signal amplification, audio preamplifiers, buffer amplifiers, transducers, programmable logic, and industry control systems.

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