ANALOG DEVICES LT1568IGN#PBF

LT1568 is a easy-to-use, active-RC filter building block with rail-to-rail inputs and outputs. The internal capacitors of the IC and the GBW product of the internal low noise op-amps are trimmed such that consistent and repeatable filter responses can be achieved. With a single resistor value, this device provides a pair of matched 2-pole butterworth low pass filters with unity gain suitable for I/Q channels. By using unequal-valued external resistors, the two 2-pole sections can create different frequency responses or gains. In addition, the two stages may be cascaded to create a single 4-pole filter with a programmable response. It is used in application such as replaces discrete RC active filters and LC filter modules, antialiasing/reconstruction filters, dual or I-and-Q channels (two matched 2nd order filters in one package), single-ended to differential conversion, video signal processing etc.