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( File format: PDF, 333009 )
High Performance Triple Universal Filter Building Block
Linear Technology Inc.

Description
The LTC1061 consists of three high performance, universal filter building blocks. Each filter building block together with an external clock and 2 to 5 resistors can produce various second order functions which are available at its three output pins. Two out of three always provide lowpass and bandpass functions while the third output pin can produce highpass or notch or allpass. The center frequency of these functions can be tuned from 0.1Hz to 35kHz and is dependent on an external clock or an external clock and a resistor ratio. The LTC1061 can be used with single or dual supplies ranging from 2.37V to 8V (or 4.74V to 16V). When the filter operates with supplies of 5V and above, it can handle input frequencies up to 100kHz. The LTC1061 is compatible with the LTC1059 single universal filter and the LTC1060 dual. Higher than 6th order functions can be obtained by cascading the LTC1061 with the LTC1059 or LTC1060. Any classical filter realization can be obtained.
Features
Three filters in a single package Up to 6th Order Filter Functions Center Frequency Range up to 35kHz fo X Q Product up to 1MHz Guaranteed Center Frequency and Q Accuracy Over Temperature Guaranteed Low Offset Voltages Over Temperature 90dB Signal-to-Noise Ratio Filter Operates from Single 4.7V Supply and up to 8V Supplies Guaranteed Filter Specifications with 5V Supply and 2.37V Supply Low Power Consumption with Single 5V Supply Clock Inputs T2L and CMOS Compatible Available in 20-Pin DIP and 20-Pin SO Wide Package




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