调节器/解调器 Wideband Integ Mod with PLL and VCO
Product Details
The ADRF6720-27 is a wideband quadrature modulator with an integrated synthesizer ideally suited for 3G and 4G communication systems. The ADRF6720-27 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 ADRF6720-27 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 ADRF6720-27 is operated with an external 1 × LO input, a polyphase filter generates the quadrature inputs to the mixer.
The ADRF6720-27 offers digital programmability for carrier feedthrough optimization, sideband suppression, HD3/IP3 optimization, and high-side or low-side LO injection.
The ADRF6720-27 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.
Applications
### Features and Benefits
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