ADS6445-EP Datasheet, PDF (33/71 Pages) Texas Instruments – QUAD CHANNEL, 14 BIT, 125 MSPS ADC WITH SERIAL LVDS OUTPUTS

ADS6445-EP
www.ti.com ............................................................................................................................................................................................ SLAS573 – FEBRUARY 2008
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ADS6443 (F_srated = 80 MSPS)
FFT for 10 MHz INPUT SIGNAL
SFDR = 91 dBc
SINAD = 74.2 dBFS
SNR = 74.4 dBFS
THD = 88.5 dBc
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f − Frequency − MHz
Figure 42.
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G037
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FFT for 70 MHz INPUT SIGNAL
SFDR = 85.7 dBc
SINAD = 73 dBFS
SNR = 73.5 dBFS
THD = 83.9 dBc
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f − Frequency − MHz
Figure 43.
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G038
FFT for 230 MHz INPUT SIGNAL
SFDR = 82 dBc
SINAD = 69.4 dBFS
SNR = 69.7 dBFS
THD = 83.4 dBc
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f − Frequency − MHz
Figure 44.
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G039
INTERMODULATION DISTORTION (IMD) vs FREQUENCY
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f_IN1 = 185.1 MHz, –7 dBFS
−20 ^fIN^{2 = 190.1 MHz, –7 dBFS}
2-Tone IMD = –93 dBFS
−40 ^{SFDR = –98 dBFS}
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f − Frequency − MHz
Figure 45.
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G040
SFDR vs INPUT FREQUENCY
Gain = 3.5 dB
Gain = 0 dB
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f_IN − Input Frequency − MHz
Figure 46.
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SNR vs INPUT FREQUENCY
Gain = 0 dB
Gain = 3.5 dB
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f_IN − Input Frequency − MHz
Figure 47.
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G042
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