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ADS6445 数据表(PDF) 31 Page - STMicroelectronics |
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ADS6445 数据表(HTML) 31 Page - STMicroelectronics |
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31 / 75 page  www.ti.com TYPICAL CHARACTERISTICS ADS6445 (F srated = 125 MSPS) f − Frequency − MHz −160 −140 −120 −100 −80 −60 −40 −20 0 0 10 20 30 40 50 60 G001 SFDR = 88 dBc SINAD = 74 dBFS SNR = 74.3 dBFS THD = 87.6 dBc f − Frequency − MHz −160 −140 −120 −100 −80 −60 −40 −20 0 0 10 20 30 40 50 60 G002 SFDR = 86 dBc SINAD = 72.63 dBFS SNR = 72.76 dBFS THD = 85 dBc f − Frequency − MHz −160 −140 −120 −100 −80 −60 −40 −20 0 0 10 20 30 40 50 60 G003 SFDR = 77.9 dBc SINAD = 68 dBFS SNR = 69.2 dBFS THD = 75.3 dBc f − Frequency − MHz −160 −140 −120 −100 −80 −60 −40 −20 0 0 10 20 30 40 50 60 G004 fIN1 = 185.1 MHz, –7 dBFS fIN2 = 190.1 MHz, –7 dBFS 2-Tone IMD = –86 dBFS SFDR = –95 dBFS ADS6445, ADS6444 ADS6443, ADS6442 SLAS531 – MAY 2007 All plots are at 25 °C, AVDD = LVDD = 3.3 V, maximum rated sampling frequency, sine wave input clock, 1.5 V PP differential clock amplitude, 50% clock duty cycle, –1 dBFS differential analog input, internal reference mode, 0 dB gain (unless otherwise noted) FFT for 10 MHz INPUT SIGNAL FFT for 100 MHz INPUT SIGNAL Figure 6. Figure 7. FFT for 230 MHz INPUT SIGNAL INTERMODULATION DISTORTION (IMD) vs FREQUENCY Figure 8. Figure 9. 31 Submit Documentation Feedback |
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