DC1959B-A

Demonstration circuit DC1959B-A features the LTC6948IUFD-1, an ultralow noise and spurious fractional-N synthesizer with integrated VCO. The DC1959B-A provides 50 ohm SMA connectors for the reference frequency input fREF (REF+IN) and the differential RF output (RF+ and RF–). A DC590 USB serial controller board is used for SPI communication with the LTC6948, controlled by the supplied FracNWizard™ software.

• VCO frequency range from 2.240 to 3.740GHz
• Integers 1 through 6-output divider settings

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