DC104B-C

DC104B LTC1068CG, LTC1068-200CG LTC1068-25CG, LTC1068-50CG SWITCHED CAPACITOR DEMONSTRATION CIRCUIT: USERS GUIDE DESCRIPTION DC104 is a surface mount printed circuit board for All DC104 boards are assembled with input, output the evaluation of Li-near Technologys LTC1068 and power supply test terminals, a 28-lead SSOP product family in a 28-lead SSOP package. The filter device (LTC1068CG Series), a dual op amp in LTC1068 product family consists of four monolithic an SO-8 for input or output buffers and decoupling clock-tunable filter building blocks. Demo Board capacitors for the filter and op amps. The filter and 104 is available in four assembled versions: dual op amps share the power supply inputs to the board. Jumpers JPA to JPD on the board con-figure Assembly 104-A features the low noise the filters second order circuit modes, jumper JP1 LTC1068CG (clock-to-center frequency ratio = configures the filter for dual or single supply opera- 100), assembly 104-B features the low noise tion and jumpers JP2 (A-D) to JP3 (A-D) configure LTC1068-200CG (clock-to-center frequency ratio = the op amp buffers as inverting or non-inverting. 200), assembly 104-C features the high frequency Surface mount pads are available on the board for LTC1068-25CG (clock-to-center frequency ratio = 1206 size surface mount resistors. The printed cir- 25) and assembly 104-D features the low power cuit layout of LTC1068-50CG (clock-to-center frequency ratio = DC104 is arranged so that most of the resistor 50). connections for one 8th order filter or two 4th order filters are available on the board. A resistor makes a connection between two filter nodes on the board and for most filter designs, no wiring is required. Linear Technology Corporation DC104B Schematic (See Datasheet) Linear Technology Corporation