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RFMD2081SQ Datasheet(PDF) 1 Page - RF Micro Devices |
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RFMD2081SQ Datasheet(HTML) 1 Page - RF Micro Devices |
1 / 18 page 1 of 18 Optimum Technology Matching® Applied GaAs HBT InGaP HBT GaAs MESFET SiGe BiCMOS Si BiCMOS SiGe HBT GaAs pHEMT Si CMOS Si BJT GaN HEMT Functional Block Diagram RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade- mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2011, RF Micro Devices, Inc. Product Description 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. RF MEMS LDMOS Synth Phase det. Ref. divider RFMD2081 45MHz TO 2700MHz IQ MODULATOR WITH SYNTHESIZER/VCO The RFMD2081 is a low power, wideband, IQ modulator with integrated fractional-N synthesizer and voltage controlled oscillator (VCO). The modulator features an input 3dB bandwidth of 100MHz, and 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, combined with an external loop filter, allows the user to generate local oscillator (LO) signals from 90MHz to 5400MHz. The LO 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 dif- ferential RF output stage. This device also features a differential input for an external VCO or LO source. Device programming is achieved via a simple 3-wire serial interface. In addition, a unique pro- gramming mode allows up to four devices to be controlled from a common serial bus. This elim- inates the need for separate chip-select control lines between each device and the host controller. Up to six general purpose outputs are provided, which can be used to access internal signals (the LOCK signal, for example) or to control front end components. The device is opti- mized for low power operation, consuming typically only 135mA from a 3V supply. 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 -40dBc Unadjusted Carrier Suppression -40dBc Unadjusted Sideband Suppression 100MHz Baseband Input 3dB Bandwidth Very Low Noise Floor -162dBm/Hz Typical Output P1dB + 4dBm Output IP3 + 17dBm 2.7V to 3.3V Power Supply 135mA Typical Current Consumption Serial Programming Interface Applications Satellite Communications QPSK/QAM Modulators Wireless Broadband Point-to-Point Software Defined Radios DS140110 Package: QFN, 32-Pin, 5mm x 5mm RFMD2081 |
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