LTC1164CSW#PBF

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LTC1164CSW#PBF is a high performance very low quiescent current active low pass filter with a high output impedance and wide frequency range. It is commonly used as an active high pass filter, generally to replace a simple, passive high pass filter. The typical applications of the LTC1164CSW#PBF include low frequency signal conditioning, low output impedance attenuation and high frequency noise filtering. The complete active low pass filter circuitry includes the active low pass filter components, such as a variable resistor to set the corner frequency and a discrete operational amplifier with variable gain.

The LTC1164CSW#PBF has two critical parameters that determine its performance: corner frequency and feedback resistor. The corner frequency of the LTC1164CSW#PBF is determined by the value of the feedback resistor, which should be chosen according to the application needs. The corner frequency can be easily adjusted by varying the value of the resistor and it is recommended to start with the calculated value and adjust to obtain the desired frequency response.

The working principle of the LTC1164CSW#PBF is based on a current feedback topology. A current mirror with a gain element is used as the feedback path in the topology. The current flow is monitored and fed back to the input of the amplifier. The gain of the current feedback amplifier is set by the external components. The input resistance of the amplifier is maintained at a constant value, since the current mirror keeps the feedback current constant. This feature provides a constant input impedance which is independent of changes in the supply voltage.

The LTC1164CSW#PBF also features a very low quiescent current, making it ideal for battery-operated applications where low power consumption is desired. It has an ultra-wide operating range and is specified for operating temperatures from -40ºC to +125ºC. The LTC1164CSW#PBF is available in an 8-pin PLCC package, making it suitable for points-of-load applications.

The active low pass filter provided by the LTC1164CSW#PBF can be used in a wide range of signal conditioning and filtering applications. It is suitable for low-cost applications where noise and signal accuracy are critical, such as in medical equipment, consumer audio applications, automotive audio systems and in measuring instruments. Furthermore, it can be used for general signal conditions and signal filtering for low frequencies.

The LTC1164CSW#PBF is an active low pass filter, with low quiescent current, wide frequency range, high output impedance and has package suitable for points-of-load applications. It is a highly integrated solution that offers reduced design and implementation time and cost, while providing excellent performance. It is widely used in low frequency signal conditioning, low output impedance attenuation, high frequency noise filtering and other signal conditioning and filtering applications.

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