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ADF41020 датащи(PDF) 1 Page - Analog Devices |
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ADF41020 датащи(HTML) 1 Page - Analog Devices |
1 / 16 page 18 GHz Microwave PLL Synthesizer Data Sheet ADF41020 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 ©2012 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES 18 GHz maximum RF input frequency Integrated SiGe prescaler Software compatible with the ADF4106/ADF4107/ADF4108 family of PLLs 2.85 V to 3.15 V PLL power supply Programmable dual-modulus prescaler 8/9, 16/17, 32/33, 64/65 Programmable charge pump currents 3-wire serial interface Analog and digital lock detect Hardware and software power-down mode APPLICATIONS Microwave point-to-point/multipoint radios Wireless infrastructure VSAT radios Test equipment Instrumentation GENERAL DESCRIPTION The ADF41020 frequency synthesizer can be used to implement local oscillators as high as 18 GHz in the up conversion and down conversion sections of wireless receivers and transmitters. It consists of a low noise, digital phase frequency detector (PFD), a precision charge pump, a programmable reference divider, and high frequency programmable feedback dividers (A, B, and P). A complete phase-locked loop (PLL) can be implemented if the synthesizer is used with an external loop filter and voltage controlled oscillator (VCO). The synthesizer can be used to drive external microwave VCOs via an active loop filter. Its very high bandwidth means a frequency doubler stage can be eliminated, simplifying system architecture and reducing cost. The ADF41020 is software-compatible with the existing ADF4106/ADF4107/ADF4108 family of devices from Analog Devices, Inc. Their pinouts match very closely with the exception of the ADF41020’s single-ended RF input pin, meaning only a minor layout change is required when updating current designs. FUNCTIONAL BLOCK DIAGRAM Figure 1. CLK DATA LE REFIN RFIN 24-BIT INPUT REGISTER AVDD DVDD CE GND GND R COUNTER R COUNTER LATCH FUNCTION LATCH A, B COUNTER LATCH P/P+ 1 N = 4(BP + A) A AND B M3 M2 M1 MUX SDOUT AVDD HIGH-Z MUXOUT GND RSET VP CP PHASE FREQUENCY DETECTOR LOCK DETECT REFERENCE CHARGE PUMP CURRENT SETTING 1 ADF41020 CPI3 CPI2 CPI1 CPI6 CPI5 CPI4 CURRENT SETTING 2 50Ω 3pF COUNTERS DIVIDE BY 4 |
Аналогичный номер детали - ADF41020 |
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Аналогичное описание - ADF41020 |
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