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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 +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.
LT5511 Maximum Ratings
Supply Voltage ................................................... 5.5V Enable Voltage ......................... 0.3V to VCC + 0.3V LO Input Power (Differential) .......................... 10dBm IF Input Power (Differential) ........................... 10dBm IF+, IF DC Currents ........................................ 25mA Operating Temperature Range .............40 to 85 Storage Temperature Range ..............65 to 150 Lead Temperature (Soldering, 10sec)............... 300
LT5511 Features
`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