GENERAL DESCRIPTION
The ADRF6820 is a highly integrated demodulator and synthesizer ideally suited for next generation communication systems. The feature rich device consists of a high linearity broadband I/Q demodulator, an integrated fractional-N phase-locked loop (PLL), and a low phase noise multicore, voltage controlled oscillator (VCO). The ADRF6820 also integrates a 2:1 RF switch, an on-chip tunable RF balun, a programmable RF attenuator, and two low dropout (LDO) regulators. This highly integrated device fits within a small 6 mm × 6 mm footprint.

FEATURES
   I/Q demodulator with integrated fractional-N PLL
   RF input frequency range: 695 MHz to 2700 MHz
   Internal LO frequency range: 356.25 MHz to 2850 MHz
   Input P1dB: 14.5 dBm at 1900 MHz RF
   Input IP3: 35 dBm at 1900 MHz RF
   Programmable HD3/IP3 trim
   Single pole, double throw (SPDT) RF input switch
   RF digital step attenuation range: 0 dB to 15 dB
   Integrated RF tunable balun for single-ended 50 Ω input
   Multicore integrated VCO
   Demodulated 1 dB bandwidth: 600 MHz
   Demodulated 3 dB bandwidth: 1400 MHz
   4 selectable baseband gain and bandwidth modes
   Digital programmable LO phase offset and dc nulling
   Programmable via 3-wire serial port interface (SPI)
   40-lead, 6 mm × 6 mm LFCSP

APPLICATIONS
   Cellular W-CDMA/GSM/LTE
   Digital predistortion (DPD) receivers
   Microwave point-to-point radios