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AD6676 Fiches technique(PDF) 1 Page - Analog Devices |
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AD6676 Fiches technique(HTML) 1 Page - Analog Devices |
1 / 90 page Wideband IF Receiver Subsystem Data Sheet AD6676 Rev. A 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 ©2014–2015 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES High instantaneous dynamic range Noise figure (NF) as low as 13 dB Noise spectral density (NSD) as low as −159 dBFS/Hz IIP3 up to 36.9 dBm with spurious tones <−99 dBFS Tunable band-pass Σ-Δ analog-to-digital converter (ADC) 20 MHz to 160 MHz signal bandwidth 70 MHz to 450 MHz IF center frequency Configurable input full-scale level of −2 dBm to −14 dBm Easy to drive resistive IF input Gain flatness of 1 dB with under 0.5 dB out-of-band peaking Alias rejection greater than 50 dB 2.0 GSPS to 3.2 GSPS ADC clock rate On-chip PLL clock multiplier 16-bit I/Q rate up to 266 MSPS On-chip digital signal processing NCO and quadrature digital downconverter (QDDC) Selectable decimation factor of 12, 16, 24, and 32 Automatic gain control (AGC) support On-chip attenuator with 27 dB span in 1 dB steps Fast attenuator control via configurable AGC data port Peak detection flags with programmable thresholds Single or dual lane, JESD204B capable Low power consumption: 1.20 W 1.1 V and 2.5 V supply voltage TDD power saving up to 60% 4.3 mm × 5.0 mm WLCSP APPLICATIONS Wideband cellular infrastructure equipment and repeaters Point-to-point microwave equipment Instrumentation Spectrum and communication analyzers Software defined radio GENERAL DESCRIPTION The AD66761 is a highly integrated IF subsystem that can digitize radio frequency (RF) bands up to 160 MHz in width centered on an intermediate frequency (IF) of 70 MHz to 450 MHz. Unlike traditional Nyquist IF sampling ADCs, the AD6676 relies on a tunable band-pass Σ-Δ ADC with a high oversampling ratio to eliminate the need for band specific IF SAW filters and gain stages, resulting in significant simplification of the wideband radio receiver architecture. On-chip quadrature digital downconversion followed by selectable decimation filters reduces the complex data rate to a manageable rate between 62.5 MSPS to 266.7 MSPS. The 16-bit complex output data is transferred to the host via a single or dual lane JESD204B interface supporting line rates of up to 5.333 Gbps. FUNCTIONAL BLOCK DIAGRAM L– L+ RESETB VDDIO AGC4, AGC3 AGC2, AGC1 VDD2NV VSSA VDD2 VDDD VSSD SPI CSB SCLK SDIO SDO SERDOUT0+ SERDOUT0– SERDOUT1+ SERDOUT1– VDDHSI SYNCINB± SYSREF± AGC SUPPORT CLOCK GENERATION –2.0V REG Mx M = 12, 16, 24, 32 I Q QDDC + NCO I Q BAND-PASS Σ-Δ ADC VIN– VIN+ 27dB ATTENUATOR (1dB STEPS) CLOCK SYNTHESIZER JESD204B SUBCLASS 1 CONTROL CLK+ CLK– VDDC VDDQ AD6676 VDDL VDD1 VSS2OUT VSS2IN Figure 1. 1 This product is protected by U.S. and international patents. |
Numéro de pièce similaire - AD6676 |
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Description similaire - AD6676 |
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