Demonstration circuit 1685A features the LTC6417, a 1.6GHz differential ADC buffer driving the LTC2209, a 16-bit 160Msps ADC. The DC1685B is supplied with a bandpass filter centered at 140MHz between the buffer and ADC. The filter center frequency can be changed to optimize performance at different analog input frequencies. Both single-ended and differential configurations are supported at the inputs. The DC1685A has been developed from the DC1281A, used to characterize LTC2209 family of ADCs.
Use the DC1685A with a DC890 FastDAACS and PScope™ Software to collect time and frequency data.