LT5519

Features:

Wide RF Frequency Range: 0.7GHz to 1.4GHz
17.1dBm Typical Input IP3 at 1GHz
On-Chip RF Output Transformer
On-Chip 50W Matched LO and RF Ports
Single-Ended LO and RF Operation
Integrated LO Buffer: 5dBm Drive Level
Low LO to RF Leakage: 44dBm Typical
Noise Figure: 13.6dB
Wide IF Frequency Range: 1MHz to 400MHz
Enable Function with Low Off-State Leakage Current
Single 5V Supply
 Small 16-Lead QFN Plastic Package


Application

  Wireless Infrastructure
  Cable Downlink Infrastructure
  Point-to-Point and Point-to-Multipoint Data Communications
 High Linearity Frequency Conversion


Pinout




Specifications

Supply Voltage ....................................................... 5.5V
Enable Voltage ............................. 0.3V to (VCC + 0.3V)
LO Input Power (Differential) ............................ +10dBm
LO+ to LO Differential DC Voltage .......................... ±1V
LO+ and LO DC Common Mode Voltage ...... 1V to VCC
IF Input Power (Differential) ............................. +10dBm
IF+ and IF DC Currents ........................................ 25mA
RF+ to RF Differential DC Voltage...................... ±0.13V
RF+ and RF DC Common Mode Voltage ...... 1V to VCC
Operating Temperature Range .................40°C to 85°C
Storage Temperature Range ................. 65°C to 125°C
Junction Temperature (TJ).................................... 125°C

Description

The LT®5519 mixer is designed to meet the high linearity
requirements of wireless and cable infrastructure transmission systems. A high speed, internally 50W matched,
LO amplifier drives a double-balanced mixer core, allowing the use of a low power, single-ended LO source. An RFoutput 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.

The LT5519 mixer delivers +17.1dBm typical input 3rd order intercept point at 1GHz with IF input signal levels of
10dBm. The input 1dB compression point is typically +5.5dBm. The IC requires only a single 5V supply.