LT1999MPS8-10#PBF

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LT1999MPS8-10#PBF application field and working principle

LT1999MPS8-10#PBF belongs to Linear-Amplifiers-Instrumentation, OP Amps, Buffer Amps. It is a low-noise, rail-to-rail, JFET input op amp which includes several features, such as rail-to-rail input-output operation and quiescent circuit current of only 1.2mA combined with a unique design of low-noise, low-distortion, low-offset voltage and high common-mode rejection.

General features

• Low noise: 1.2nV/√Hz
• Low distortion: 0.0002%
• Low bias current: 1.2mA
• Low offset voltage: 2mV
• Rail-to-rail input/output
• High common-mode rejection

Application Fields

LT1999MPS8-10#PBF is widely used in various application fields such as digital audio, sensor instrumentation, DAQ, video and audio, etc. For example, its low-distortion and low-noise performance makes it the best choice for audio buffer and amplifier circuits; its rail-to-rail input-output makes it the best choice for sensor instrumentation, where the input and output signals are close to either power rails.

Working Principle

The LT1999MPS8-10#PBF is based on a JFET input topology with an architecture similar to the one of the common-source amplifier. It includes a number of features which optimize the performance, such as low noise, low distortion, and low input bias current. The LT1999MPS8-10#PBF is a dual op amp with a total quiescent current of only 1.2mA and a wide common-mode rejection ratio in the entire power supply range.

The LT1999MPS8-10#PBF is a two-stage architecture consisting of a differential input stage and an output stage. The differential input stage provides the large input impedance of the circuit and low noise, while the output stage provides rail-to-rail output swing. The input and output stages are connected together using a bandgap reference. This ensures very low quiescent current and a low offset voltage of only 2mV.

The key features of the circuit which enable it to provide rail-to-rail performance are the low-current output pair which allows the output swing to reach the power rails, the wide common-mode rejection ratio (CMRR) which ensures that it can remain linear despite the presence of large common-mode signals, and the wide input and output common-mode voltage range which allows it to be used in a wide variety of applications.

Conclusion

The LT1999MPS8-10#PBF op amp is an excellent choice for low-noise, rail-to-rail input-output applications. It is perfect for any application where the input and output signals are close to either power rails, such as digital audio, sensor instrumentation, DAQ and video and audio. Its low distortion and low noise performance, and low offset voltage ensure maximum fidelity and robustness in any application.

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