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AD6676 数据表(PDF) 16 Page - Analog Devices |
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AD6676 数据表(HTML) 16 Page - Analog Devices |
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16 / 90 page  AD6676 Data Sheet Rev. D | Page 16 of 90 0 –130 –90 –100 –110 –120 –80 –70 –60 –50 –40 –30 –20 –10 125 135 145 155 165 175 185 195 205 215 225 235 INPUT FREQUENCY (MHz) WORST SWEPT PASS BAND SPUR FOR –1dBFS CW AT –3.5dBm IF PASS BAND REGION = 75MHz –97dBFS NBW = 5.6kHz –1dBFS AT 185MHz Figure 28. Worst Spur Falling in 75 MHz Pass Band for Swept CW from 122.88 MHz to 245.76 MHz 0 –130 –90 –100 –110 –120 –80 –70 –60 –50 –40 –30 –20 –10 145 155 165 175 185 195 205 215 INPUT FREQUENCY (MHz) –96dBFS –94dBFS NBW = 5.6kHz TWO TONES AT –8dBFS (–10.5dBm) AT 178.5MHz AND 183.5MHz Figure 29. Two-Tone IMD Performance (f1 = 178.5 MHz, f2 = 183.5 MHz) INPUT AMPLITUDE (dBFS) –39 –6 –9 –12 –15 –18 –21 –24 –27 –30 –33 –36 –80 –85 –90 –95 –100 –105 –110 –115 –120 –125 –130 Figure 30. Swept Two-Tone Worst IMD3 vs. Tone Level (dBFS) (f1 = 178.5 MHz, f2 = 183.5 MHz) –94 –97 –100 –103 –106 –109 –112 –115 INPUT FREQUENCY (MHz) 125 145 165 185 205 225 245 –1dBFS –6dBFS –12dBFS –18dBFS Figure 31. Swept Worst Pass Band Spur with CW Swept from 122.88 MHz to 245.76 MHz, over PIN = −1 dBFS, −6 dBFS, −12 dBFS, and −18 dBFS 0 –130 –90 –100 –110 –120 –80 –70 –60 –50 –40 –30 –20 –10 145 155 165 175 185 195 205 215 INPUT FREQUENCY (MHz) –90dBFS –92dBFS NBW = 5.6kHz TWO TONES AT –8dBFS (–10.5dBm) AT 169MHz AND 193MHz Figure 32. Two-Tone IMD Performance (f1 = 169 MHz, f2 = 193 MHz) FREQUENCY (MHz) 140 150 160 170 180 190 200 210 220 230 –80 –85 –90 –95 –100 –105 –115 –110 –20dBFS –14dBFS –8dBFS Figure 33. Swept Two-Tone Worst IMD3 vs. Frequency over Pass Band (∆f = 5 MHz for Two Tones, PIN = −8 dBFS, −14 dBFS, and −20 dBFS) |
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