DESCRIPTION
The LT®5520 mixer is designed to meet the high linearity requirements of wireless and cable infrastructure transmission applications. A high-speed, internally 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 components at the RF output, while reducing system cost, component 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.

FEATURES
■ Wide RF Output Frequency Range: 1.3GHz to 2.3GHz
■ 15.9dBm Typical Input IP3 at 1.9GHz
■ On-Chip RF Output Transformer
■ No External LO or RF Matching Required
■ Single-Ended LO and RF Operation
■ Integrated LO Buffer: –5dBm Drive Level
■ Low LO to RF Leakage: – 41dBm Typical
■ Wide IF Frequency Range: DC to 400MHz
■ Enable Function with Low Off-State Leakage Current
■ Single 5V Supply
■ Small 16-Lead QFN Plastic Package

APPLICATIONS
■ Wireless Infrastructure
■ Cable Downlink Infrastructure
■ Point-to-Point Data Communications
■ High Linearity Frequency Conversion