ADS5546 Datasheet, PDF (24/50 Pages) Texas Instruments – 14-BIT, 190 MSPS ADC WITH DDR LVDS/CMOS OUTPUTS

ADS5546
SLWS183C – NOVEMBER 2005 – REVISED OCTOBER 2006
www.ti.com
TYPICAL CHARACTERISTICS (continued)
All plots are at 25°C, AVDD = DRVDD = 3.3 V, sampling frequency = 190 MSPS, 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, DDR LVDS
data output (unless otherwise noted)
0
-20
-40
-60
-80
-100
-120
-140
0
FFT for 200 MHz INPUT SIGNAL
SFDR = 77.2 dBc,
SNR = 71.7 dBFS,
SINAD = 69.4 dBFS
10 20 30 40 50 60 70 80 90
f - Frequency - MHz
Figure 15.
FFT for 300 MHz INPUT SIGNAL
0
-20
SFDR = 72.1 dBc,
SNR = 70.1 dBFS,
-40 ^{SINAD = 66.3 dBFS}
-60
-80
-100
-120
-140
0 10 20 30 40 50 60 70 80 90
f - Frequency - MHz
Figure 17.
FFT for 500 MHz INPUT SIGNAL
0
SFDR = 59 dBc,
-20 _{SNR = 66 dBFS,}
SINAD = 56.3 dBFS
-40
-60
-80
-100
-120
-140
0 10 20 30 40 50 60 70 80 90
f - Frequency - MHz
Figure 19.
0
-20
-40
-60
-80
-100
-120
-140
0
FFT for 225 MHz INPUT SIGNAL
SFDR = 74 dBc,
SNR = 71 dBFS,
SINAD = 69.9 dBFS
10 20 30 40 50 60 70 80 90
f - Frequency - MHz
Figure 16.
0
-20
-40
-60
-80
-100
-120
-140
0
FFT for 375 MHz INPUT SIGNAL
SFDR = 65.6 dBc,
SNR = 68.7 dBFS,
SINAD = 62.3 dBFS
10 20 30 40 50 60 70 80 90
f - Frequency - MHz
Figure 18.
INTERMODULATION DISTORTION (IMD) vs FREQUENCY
0
F_IN1 = 50.09 MHz, -7 dBFS,
-20 F_IN2 = 46.09 MHz, -7 dBFS,
2-Tone IMD, 95 dBFS
-40
-60
-80
-100
-120
-140
0 10 20 30 40 50 60 70 80 90
f - Frequency - MHz
Figure 20.
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