LT5519 Datasheet | Linear Technology

.. 0.7GHz to 1.4GHz High Linearity Upconverting Mixer Features s s s s s s s s s s s s DESCRIPTIO U APPLICATIO S s s s Wide RF Frequency Range: 0.7GHz to 1.4GHz 17.1d Bm Typical Input IP3 at 1GHz On-Chip RF Output Transformer On-Chip 50Ω Matched LO and RF Ports Single-Ended LO and RF Operation Integrated LO Buffer: - 5d Bm Drive Level Low LO to RF Leakage: - 44d Bm Typical Noise Figure: 13.6d B Wide IF Frequency Range: 1MHz to 400MHz Enable Function with Low Off-State Leakage Current Single 5V Supply Small 16-Lead QFN Plastic Package The LT®5519 mixer is designed to meet the high linearity requirements of wireless and cable infrastructure transmission systems. A high speed, internally 50Ω matched, LO amplifier drives a double-balanced mixer core, allowing the use of a low power, single-ended LO source. An RF output transformer is integrated, thus eliminating the need for external matching ponents at the RF output, while reducing system cost, ponent count, board area and system-level variations. The IF port can be easily matched to a broad range of frequencies for use in many different applications. The LT5519 mixer delivers +17.1d Bm typical input 3rd order intercept point at 1GHz with IF input signal levels of - 10d Bm. The input 1d B pression point is typically +5.5d Bm. The IC requires only a single 5V supply. , LTC and LT are registered trademarks of Linear Technology Corporation. s Wireless Infrastructure Cable Downlink Infrastructure Point-to-Point and Point-to-Multipoint Data munications High Linearity Frequency Conversion TYPICAL APPLICATIO 5VDC 1µF 1000p F 39n H EN BPF 4:1 IF 33p F 100Ω IF - + VCC1 VCC2 VCC3 POUT, IM3, IM2 (d Bm/TONE) 220p F 100Ω BIAS LT5519 10p F RF + RF - BPF PA 220p F GND 5p F (OPTIONAL) LO INPUT - 5d Bm LO+ 85Ω 5p F LO - 5519...