LT5511 Datasheet | Linear Technology

.. High Signal Level Upconverting Mixer Features s s s s s s s s s s DESCRIPTIO Wide RF Output Frequency Range to 3000MHz Broadband RF and IF Operation +17d Bm Typical Input IP3 (at 950MHz) +6d Bm IF Input for 1d B RF Output pression Integrated LO Buffer: - 10d Bm 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 The LT®5511 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 +17d Bm typical input 3rd order intercept point at 950MHz, and +15.5d Bm IIP3 at 1900MHz, with IF input signal levels of - 5d Bm. The input 1d B pression point is typically +6d Bm. , LTC and LT are registered trademarks of Linear Technology Corporation. U APPLICATIO S s s s CATV Downlink Infrastructure Wireless Infrastructure High Linearity Mixer Applications TYPICAL APPLICATIO ENABLE LT5511 EN VCC 5V VCCBIAS VCCLO 950MHz TO DOWNMIXER POUT, IM3 (d Bm/TONE) BIAS 44MHz MOD IF+ IF- RF + RF - GND LO+ LO INPUT 994MHz - 10d Bm LO- 5511 F01a Figure 1. High Signal Level Upmixer for CATV Downlink Infrastructure. 5511i RF Output Power and 3rd Order Intermodulation vs Input Power (Two Input Tones) 10 0 - 10 - 20 - 30 -...