High Signal Level Upconverting Mixer

The LT5511 mixer is designed to meet the high linearity requirements of cable TV infrastructure downstream transmitters and wireless infrastructure transmit systems. The IC includes a differential 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.

The LT5511 mixer delivers +17dBm typical input 3rd order intercept point at 950MHz, and +15.5dBm IIP3 at 1900MHz, with IF input signal levels of – 5dBm. The input 1dB compression point is typically +6dBm.

Applications

* CATV Downlink Infrastructure

* Wireless Infrastructure

* High Linearity Mixer Applications

* Wide RF Output Frequency Range to 3000MHz

* Broadband RF and IF Operation

* +17dBm Typical Input IP3 (at 950MHz)

* +6dBm IF Input for 1dB RF Output Compression

* Integrated LO Buffer: -10dBm Drive Level

* Single-Ended or Differential LO Input

* Double-Balanced Mixer

* Enable Function

* Single 4.0V-5.25V Supply Voltage Range

* 16-Pin TSSOP Exposed Pad Package