RFMD2080 Datasheet | RF Micro Devices

Features - RF Output Frequency Range 45MHz to 2700MHz - Fractional-N Synthesizer with Very Low Spurious Levels - Typical Step Size 1.5Hz - Fully Integrated Wideband VCOs and LO Buffers - Integrated Phase Noise <0.2° rms at 1GHz - Integrated Baseband Amplification Stage with Variable Gain and Filtering - Tunable Baseband Filters Input 3d B Bandwidth from 1.5MHz to 10MHz - -45d Bc Unadjusted Carrier Suppression - -40d Bc Unadjusted Sideband Suppression - Very Low Noise Floor -150d Bm/Hz Typical - Output P1d B +4d Bm - Output IP3 +18d Bm - 3.0V to 3.3V Power Supply - 155m A Typical Current Consumption - Serial Programming Interface Applications - Satellite munications - QPSK/QAM Modulators - SSB Modulators - Software Defined Radios Phase det . Synth Ref. divider Functional Block Diagram Product Description The RFMD2080 is a low power, highly integrated, IQ modulator with integrated fractional-N synthesizer and voltage controlled oscillator (VCO). The RFMD2080 can generate output frequencies of between 45MHz and 2700MHz, making it suitable for a wide range of applications. The fractional-N synthesizer takes advantage of an advanced sigma-delta architecture that delivers ultra-fine step sizes and low spurious products. The synthesizer/VCO bined with an external loop filter allows the user to generate an oscillator signal covering 90MHz to 5400MHz. The signal is buffered and routed to a high accuracy quadrature divider (/2) that drives the balanced I and Q mixers. The output of the mixers are summed and applied to a differential RF output stage. The device also features a differential input for an external VCO or LO source. The baseband I and Q stages are highly integrated; featuring variable gain and filtering as well as generation of DC offset voltages. The programmable DC offsets enable improved carrier suppression. The baseband input 3d B bandwidth can be tuned from 1.5MHz to 10MHz, and the total gain control range is 38d B with 2d B resolution. Device programming is...