LTC15633  Active RC, 4th Order Lowpass Filter FamilyThe LTC15632 LTC15633 are a family of extremely easytouse, active RC lowpass Filters with RailtoRail inputs and outputs and low DC offset suitable for systems with a resolution of up to 16 bits. The LTC15632 with a single resistor value, gives a unitygain Butterworth response. The LTC15633 with a single resistor value, gives a unitygain Bessel response. The proprietary architecture of these parts allows for a simple resistor calculation: R = 10k (256kHz/fC); fC = Cutoff Frequency where fC is the desired cutoff frequency. For many applications, this formula is all that is needed to design a Filter By simply utilizing different valued resistors, gain and other responses are achieved. The LTC1563X features a low power mode, for the lower frequency applications, where the supply current is reduced by an order of magnitude and a near zero power shutdown mode. The LTC1563Xs are available in the narrow SSOP16 package (Same footprint as an SO8 package).
By Linear Technology Corporation 

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