ADRF6807 700 MHz TO 1050 MHz Quadrature Demodulator with Fractional-N PLL and VCO

The ADRF6807 is a high dynamic range IQ demodulator with integrated phase-locked loop (PLL) and voltage controlled oscillator (VCO). The fractional-N PLL/synthesizer generates a frequency in the range of 2.8 GHz to 4.2 GHz. A programmable quadrature divider (divide ratio = 4) divides the output frequency of the VCO down to the required local oscillator (LO) frequency to drive the mixers in quadrature. Additionally, an output divider (divide ratio = 4 to 8) generates a divided-down VCO signal for external use.

The PLL reference input is supported from 9 MHz to 160 MHz. The phase detector output controls a charge pump whose output is integrated in an off-chip loop filter. The loop filter output is then applied to an integrated VCO.

The IQ demodulator mixes the differential RF input with the complex LO derived from the quadrature divider. The differential I and Q output paths have excellent quadrature accuracy and can handle baseband signaling or complex IF up to 120 MHz.

A reduced power mode of operation is also provided by programming the serial interface registers to reduce current consumption, with slightly degraded input linearity and output current drive.

The ADRF6807 is fabricated using an advanced silicon-germanium BiCMOS process. It is available in a 40-lead, exposed paddle, RoHS-compliant, 6 mm × 6 mm LFCSP package. Performance is specified over the −40°C to +85°C temperature range.

Applications
  • QAM/QPSK RF/IF demodulators
  • Cellular W-CDMA/CDMA/CDMA2000
  • Microwave point-to-(multi)point radios
  • Broadband wireless and WiMAX
Features and Benefits
  • IQ demodulator with integrated fractional-N PLL
  • LO frequency range: 700 MHz to 1050 MHz
  • For the following specifications (LPEN = 0)/(LPEN = 1):
    Input P1dB: 12.8 dBm/11.7 dBm
    Input IP3: 26.7 dBm/24.0 dBm
    Noise figure (DSB): 13.1 dB/12.4 dB
    Voltage conversion gain: 1.0 dB/4.3 dB
  • Quadrature demodulation accuracy
    Phase accuracy: <0.5°
    Amplitude accuracy: <0.1 dB
    Baseband demodulation: 170 MHz/135 MHz, 3 dB bandwidth
  • SPI serial interface for PLL programming
  • 40-lead, 6 mm × 6 mm LFCSP
RF & Microwave
Software & Systems Requirements
Data Sheets
Documentnote
ADRF6807: 700 MHz to 1050 MHz Quadrature Demodulator with Fractional-N PLL Data Sheet (Rev. B)PDF 966 kB
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
ADRF6807ACPZ-R7 Production40 ld LFCSP (6x6mm w/4.3mm pad)REEL 750-40 to 85C09.98Y
Evaluation Boards
Part NumberDescriptionPriceRoHS
ADRF6807-EVALZEvaluation Board150Y
Reference Materials
ADRF6807: 700 MHz至1050 MHz正交解调器集成小数N分频PLL (Rev B, 02/2012) ADRF6807
ADRF6807: 700 MHz to 1050 MHz Quadrature Demodulator with Fractional-N PLL Data Sheet (Rev B, 02/2012) ADRF6807
Windows 7 Drivers for the SPI Software adl5336
ADRF6807 Evaluation Board Software (Adapter board with USB controlled Cypress Microcontroller) adrf6807
ADRF6807 Evaluation Board Software and Documentation adrf6807
ADRF6807: 700 MHz至1050 MHz正交解调器集成小数N分频PLL (Rev. B) adrf6807
ADRF6807: 700 MHz to 1050 MHz Quadrature Demodulator with Fractional-N PLL Data Sheet (Rev. B) adrf6807
RF Source Booklet adf9010