DESCRIPTION
The LT®5515 is a 1.5GHz to 2.5GHz direct conversion quadrature demodulator optimized for high linearity receiver applications. It is suitable for communications receivers where an RF signal is directly converted into I and Q baseband signals with bandwidth up to 260MHz. The LT5515 incorporates balanced I and Q mixers, LO buffer amplifiers and a precision, high frequency quadrature generator.

FEATURES
■ Frequency Range: 1.5GHz to 2.5GHz
■ High IIP3: 20dBm at 1.9GHz
■ High IIP2: 51dBm at 1.9GHz
■ Noise Figure: 16.8dB at 1.9GHz
■ Conversion Gain: –0.7dB at 1.9GHz
■ I/Q Gain Mismatch: 0.3dB
■ I/Q Phase Mismatch: 1°
■ Shutdown Mode
■ 16-Lead QFN 4mm × 4mm Package with Exposed Pad

APPLICATIONS
■ Cellular/PCS/UMTS Infrastructure
■ High Linearity Direct Conversion I/Q Receiver
■ High Linearity I/Q Demodulator
■ RF Power Amplifier Linearization