The DC426B demo circuit board is intended to demonstrate the capabilities of the LT®5511 high signal level upconverting mixer IC for 1900MHz infrastructure applications. The LT5511 mixer IC is designed to meet the high linearity requirements of cable TV infrastructure downstream transmitters and wireless infrastructure transmit systems. The IC includes a differentail LO buffer amplifier driving a double-balanced mixer. The LO, RF and IF ports can be easily matched to a broad range of frequencies for different applications. The high performance capability of the LO buffer allows the use of a single-ended source, thus eliminating the need for an LO balun.