DC962A-A

DC962A-A demonstration circuit features the LT6600-2.5 fully differential 4th order lowpass filter approximating a Chebyshev frequency response. The LT6600-2.5 combines a lowpass filter with a fully differential amplifier for driving the differential input of an analogue to digital converter (ADC). A LT6600-2.5 also provides the necessary level shifting to set its output common mode voltage to accommodate the reference voltage requirements of an ADC. A LT6600-2.5 filter IC requires only two external input resistors to set the filter’s differential gain. A DC962A-A board contains an LT6600-2.5 lowpass filter configured with input resistors as a unity gain differential amplifier. Gains greater than one requires changing the input resistors to a lower value. Connection to the differential input and output of a DC962A-A is through SMA connectors. On board jumpers configure the DC962A-A for dual or single supply operation.

• Cut-off frequency is 2.5MHz