thanks for your reply, so i think this is the noise which u are talking about but it effects on the sine wave. . . I am using win7 and here is my UART output
********************************************************************
ADI AD9467-FMC-EBZ Reference Design
AD9467 CHIP ID: 0x50
AD9467 CHIP GRADE: 0x20
AD9517 CHIP ID: 0xD3
********************************************************************
ADC Test: mode - MIDSCALE
format - OFFSET BINARY
Test passed
ADC Test: mode - MIDSCALE
format - TWOS_COMPLEMENT
Test passed
ADC Test: mode - POS_FULLSCALE
format - OFFSET BINARY
Test passed
ADC Test: mode - POS_FULLSCALE
format - TWOS_COMPLEMENT
Test passed
ADC Test: mode - NEG_FULLSCALE BINARY
format - OFFSET BINARY
Test passed
ADC Test: mode - NEG_FULLSCALE BINARY
format - TWOS_COMPLEMENT
Test passed
ADC Test: mode - CHECKERBOARD
format - OFFSET BINARY
Test passed
ADC Test: mode - CHECKERBOARD
format - TWOS_COMPLEMENT
Test passed
ADC Test: mode - PN_23_SEQUENCE
format - OFFSET BINARY
Test passed
ADC Test: mode - PN_23_SEQUENCE
format - TWOS_COMPLEMENT
Test skipped
ADC Test: mode - PN_9_SEQUENCE
format - OFFSET BINARY
Test passed
ADC Test: mode - PN_9_SEQUENCE
format - TWOS_COMPLEMENT
Test skipped
ADC Test: mode - ONE_ZERO_TOGGLE
format - OFFSET BINARY
Test passed
ADC Test: mode - ONE_ZERO_TOGGLE
format - TWOS_COMPLEMENT
Test passed
Testing done.
Start capturing data...