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ADF41513 Fiches technique(PDF) 1 Page - Analog Devices |
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ADF41513 Fiches technique(HTML) 1 Page - Analog Devices |
1 / 30 page 26.5 GHz, Integer N/Fractional-N, PLL Synthesizer Data Sheet ADF41513 Rev. 0 Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2019 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES 1 GHz to 26.5 GHz bandwidth Ultralow noise PLL Integer N = −235 dBc/Hz, fractional-N = −231 dBc/Hz High maximum PFD frequency Integer N = 250 MHz, fractional-N = 125 MHz 25-bit fixed/49-bit variable fractional modulus mode Single-ended reference input 3.3 V power supply, 3.3 V charge pump Integrated 1.8 V logic capability Phase resync Programmable charge pump currents: 16× range Digital lock detect 3-wire serial interface with register readback option Hardware and software power-down mode Operating range from −40°C to +105°C APPLICATIONS Test equipment and instrumentation Wireless infrastructure Microwave point to point and multipoint radios Very small aperture terminal (VSAT) radios Aerospace and defense GENERAL DESCRIPTION The ADF41513 is an ultralow noise frequency synthesizer that can be used to implement local oscillators (LOs) as high as 26.5 GHz in the upconversion and downconversion sections of wireless receivers and transmitters. The ADF41513 is designed on a high performance silicon geranium (SiGe), bipolar complementary metal-oxide semiconductor (BiCMOS) process, achieving a normalized phase noise floor of −235 dBc/Hz. The phase frequency detector (PFD) operates up to 250 MHz (integer N mode)/ 125 MHz (fractional-N mode) for improved phase noise and spur performance. The variable modulus, ∑-Δ modulator allows extremely fine resolution when using a 49-bit divide value. The ADF41513 can be used as an integer N phase-locked loop (PLL), or it can be used as a fractional-N PLL with either a fixed modulus for subhertz frequency resolution or variable modulus for subhertz exact frequency resolution. A complete PLL is implemented when the synthesizer is used with an external loop filter and voltage controlled oscillator (VCO). The 26.5 GHz bandwidth eliminates the need for a frequency doubler or divider stage, simplifying system architecture and reducing cost. The ADF41513 is packaged in a compact, 24-lead, 4 mm × 4 mm LFCSP. FUNCTIONAL BLOCK DIAGRAM LOCK DETECT CP DATA LE 32-BIT DATA REGISTER CLK GND RDIV AVDD SDOUT N AVDD1 AVDD1 AVDD2 AVDD3 AVDD4 AVDD5 CREG1 GND CREG2 VP CE RFINA RFINB OUTPUT MUX MUXOUT – + HIGH-Z PHASE FREQUENCY DETECTOR ADF41513 25-BIT FIXED/49-BIT VARIABLE FRACTIONAL INTERPOLATOR FRACTION VALUE INTEGER VALUE CHARGE PUMP 1.8V REGULATOR TXDATA REFERENCE RSET REFIN ×2 DOUBLER 5-BIT R COUNTER ÷2 DIVIDER MODULUS 225 VALUE N COUNTER + – DLD DC1 DC2 Figure 1. |
Numéro de pièce similaire - ADF41513_V01 |
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Description similaire - ADF41513_V01 |
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