Features
Frequency Range: 800MHz to 1.5GHz
High IIP3: 21.5dBm at 900MHz
High IIP2: 52dBm
Noise Figure: 12.8dB at 900MHz
Conversion Gain: 4.3dB at 900MHz
I/Q Gain Mismatch: 0.2dB
Shutdown Mode
16-Lead QFN 4mm x 4mm Package with Exposed Pad
The LT5516 is an 800MHz to 1.5GHz direct conversion quadrature demodulator optimized for high linearity receiver applications. It is suitable for communications receivers where an RF or IF signal is directly converted into I and Q baseband signals with bandwidth up to 260MHz. The LT5516 incorporates balanced I and Q mixers, LO buffer amplifiers and a precision, high frequency quadrature generator.
In an RF receiver, the high linearity of the LT5516 provides excellent spur-free dynamic range, even with fixed gain front end amplification. This direct conversion receiver can eliminate the need for intermediate frequency (IF) signal processing, as well as the corresponding requirements for image filtering and IF filtering. Channel filtering can be performed directly at the outputs of the I and Q channels. These outputs can interface directly to channelselect filters (LPFs) or to a baseband amplifier.
Applications
Cellular/PCS/UMTS Infrastructure
High Linearity Direct Conversion I/Q Receiver
High Linearity I/Q Demodulator
