LT5512 Datasheet | Linear Technology

.. 1k Hz-3GHz High Signal Level Down-Converting Mixer Features s s DESCRIPTIO s s s s s s s s Broadband RF, LO and IF Operation High Input IP3: +21d Bm at 900MHz +17d Bm at 1900MHz Typical Conversion Gain: 1d B at 1900MHz SSB Noise Figure: 11d B at 900MHz 14d B at 1900MHz Integrated LO Buffer: Insensitive to LO Drive Level Single-Ended or Differential LO Signal High LO-RF Isolation Enable Function 4.5V to 5.25V Supply Voltage Range 4mm × 4mm QFN Package The LT®5512 is a broadband mixer IC optimized for high linearity downconverter applications including cable and wireless infrastructure. The IC includes a differential LO buffer amplifier driving a double-balanced mixer. An integrated RF buffer amplifier improves LO-RF isolation and eliminates the need for precision external bias resistors. The LT5512 is a high-linearity alternative to passive diode mixers. Unlike passive mixers, which have conversion loss and require high LO drive levels, the LT5512 delivers conversion gain and requires significantly lower LO drive levels. , LTC and LT are registered trademarks of Linear Technology Corporation. U APPLICATIO S s s s s Cellular/PCS/UMTS Infrastructure CATV Downlink Infrastructure High Linearity Mixer Applications ISM Band Receivers TYPICAL APPLICATIO High Signal-Level Downmixer for Wireless Infastructure 5V 100p F 1850MHz TO 1910MHz LNA 1.5p F 1850MHz TO 1910MHz EN 1:2 RF + 1µF VCC1 LT5512 VCC2 + 220n H 100p F POUT, IM3 (d Bm/TONE) 70MHz (TYP) IF VGA LTC1748 ADC - RF - 8.2p F 220n H + LO- LO INPUT - 10d Bm 100p F 5.6n H 100p...