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AD6676 数据表(PDF) 19 Page - Analog Devices |
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AD6676 数据表(HTML) 19 Page - Analog Devices |
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19 / 90 page  Data Sheet AD6676 Rev. D | Page 19 of 90 NOMINAL PERFORMANCE FOR IF = 350 MHZ AND BW = 160 MHZ FIF = 350 MHz, BW = 160 MHz, FADC = 3.2 GHz, attenuator = 0 dB, LEXT = 10 nH, maximum PIN_0dBFS setting, fDATA_IQ = 266.7 MSPS, shuffler enabled (every clock cycle), with default threshold settings, unless otherwise noted. 1.00 0.75 0.50 0.25 –0.50 –0.25 0 270 290 310 330 350 370 390 410 430 FREQUENCY (MHz) Figure 46. IF Pass Band Flatness (Includes Digital Filter) –140 –142 –144 –146 –148 –150 –152 –154 –156 270 290 310 330 350 370 390 410 430 INPUT FREQUENCY (MHz) NSD (–1 dBFS SIGNAL) NSD (NO SIGNAL) Figure 47. NSD With and Without Full-Scale CW at 355 MHz 0 –120 –100 –80 –60 –40 –20 260 280 300 320 340 360 380 400 440 420 INPUT FREQUENCY (MHz) –1 dBFS AT 431MHz NBW = 12.2kHz IF PASS BAND REGION Figure 48. Spectral Plot of IF Pass Band Region with −1 dBFS CW at 431 MHz 5 –35 –30 –25 –20 –15 –10 –5 0 0 1000 900 800 700 600 500 400 300 200 100 FREQUENCY (MHz) Figure 49. Wideband Frequency Response (Before Digital Filter) –140 –142 –144 –146 –148 –150 –152 –154 –156 –44 –3 –5 –8 –11 –14 –17 –20 –23 –26 –29 –32 –35 –38 –41 INPUT POWER (dBm) PIN_0dBFS = –2.3dBm 310MHz 400MHz 350MHz Figure 50. NSD vs. CW Input Power, CW at 355 MHz (NSD Measured at 350 MHz as well as 350 MHz and 400 MHz Band Edges) –60 –61 –62 –63 –64 –65 –66 –67 –68 –69 –70 –45 –3 –6 –9 –12 –15 –18 –21 –24 –27 –30 –33 –36 –39 –42 INPUT POWER (dBm) PIN_0dBFS = –2.3dBm Figure 51. IBN in IF Pass Band Region (BW = 160 MHz) vs. Swept Single Tone Input Power with CW at 431 MHz |
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