Product Description
The RF2411 is a monolithic integrated UHF receiver front-end. The IC contains all of the required components to implement the RF functions of the receiver except for the passive filtering and LO generation. It contains an LNA (low-noise amplifier), a second RF amplifier, and a balanced mixer which can drive a single-ended or balanced load. The output of the LNA is made available as a pin to permit the insertion of a bandpass filter between the LNA and the RF/Mixer section. The LNA output is buffered to permit a wide range of choices for the interstage filter without altering the VSWR or noise figure at the LNA input and to provide high isolation from the LO to the input port. The LNA section may be disabled to conserve power.

Features
■ Single 3V to 6.5V Power Supply
■ 500MHz to 1900MHz Operation
■ 25dB Small Signal Gain
■ 2.5dB Cascaded Noise Figure
■ 8.5mA DC Current Consumption
■ -8dBm Input IP3

Applications
■ UHF Digital and Analog Receivers
■ Digital Communication Systems
■ Spread-Spectrum Communication Systems
■ Commercial and Consumer Systems
■ Portable Battery-Powered Equipment
■ General Purpose Frequency Conversion