The ADRF6720 is a wideband quadrature modulator with an integrated synthesizer ideally suited for 3G and 4G communication systems. The ADRF6720 consists of a high linearity broadband modulator, an integrated fractional-N phase-locked loop (PLL), and four low phase noise multicore voltage controlled oscillators (VCOs).
The ADRF6720 local oscillator (LO) signal can be generated internally via the on-chip integer-N and fractional-N synthesizers, or externally via a high frequency, low phase noise LO signal. The internal integrated synthesizer enables LO coverage from 356.25 MHz to 2855 MHz using the multicore VCOs. In the case of internal LO generation or external LO input, quadrature signals are generated with a divide-by-2 phase splitter. When the ADRF6720 is operated with an external 1 × LO input, a polyphase filter generates the quadrature inputs to the mixer.
The ADRF6720 offers digital programmability for carrier feedthrough optimization, sideband suppression, HD3/IP3 optimization, and high-side or low-side LO injection.
The ADRF6720 is fabricated using an advanced silicon-germanium BiCMOS process. It is available in a 40-lead, RoHS-compliant, 6 mm × 6 mm LFCSP package with an exposed pad. Performance is specified over the −40°C to +85°C temperature range.
|Title||Content Type||File Type|
|ADRF6720: Wideband Quadrature Modulator with Integrated Fractional-N PLL and VCOs Data Sheet (Rev 0, 04/2014) (pdf, 3411 kB)||Data Sheets|
|UG-689: Evaluating the ADRF6720, a Wideband Quadrature Modulator with Integrated Fractional-N PLL and VCOs (pdf, 714 kB)||User Guides|
|Analog Devices Introduces High-Performance RF ICs for Multi-band Base Stations and Microwave Point-to-Point Radios (03 Jun 2014)||Press Releases||HTML|
RF Source Booklet
(PDF, 4353 kB)
RF IC Product Overview - Version P (02/2014)
|Glossary of EE Terms||Glossary||HTML|
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