5962-0924001VXC Datasheet, PDF (26/46 Pages) Texas Instruments – 12-Bit, 1-GSPS Analog-to-Digital Converter

ADS5400-SP
SLAS669C – SEPTEMBER 2010 – REVISED AUGUST 2012
www.ti.com
TYPICAL CHARACTERISTICS (continued)
Typical plots at T_A = 25°C, sampling rate = 1 GSPS, 50% clock duty cycle, AVDD5 = 5 V, AVDD3 = 3.3 V, DVDD3 = 3.3 V,
and 1.5-V_PP differential clock, (unless otherwise noted)
DIFFERENTIAL NONLINEARITY
1
A_IN = -0.05 dBFS,
0.8 _{fIN = 100.33 MHz,}
0.6 ^{fs = 1 GSPS}
INTEGRAL NONLINEARITY
2
A_IN = -0.05 dBFS,
1.5
f_IN = 100.33 MHz,
f_s = 1 GSPS
1
0.4
0.5
0.2
0
0
-0.2
-0.4
-0.6
-0.8
-1
0
512 1024 1536 2048 2560 3072 3584 4096
ADC Output Code
Figure 12.
-0.5
-1
-1.5
-2
0 512 1024 1536 2048 2560 3072 3584 4096
ADC Output Code
Figure 13.
AC PERFORMANCE
vs
INPUT AMPLITUDE
(801.13-MHz INPUT SIGNAL)
100
SFDR (dBFS)
80
SNR (dBFS)
60
AC PERFORMANCE
vs
INPUT AMPLITUDE
(247.5-MHz AND 252.5-MHz TWO-TONE INPUT SIGNAL)
120
2F2-F1 (dBFS)
2F1-F2 (dBFS)
100
80
Worst Spur (dBFS)
40 ^{SFDR (dBC)}
60
20
SNR (dBC)
0
f_IN = 801.13 MHz,
f_s = 1 GSPS,
16k FFT
-20
-90 -80 -70 -60 -50 -40 -30 -20 -10 0
Input Amplitude - dBFS
Figure 14.
40 ^{Worst Spur (dBc)}
20
f_s = 1 GSPS,
f_IN1 = 247.5 MHz,
f_IN2 = 252.5 MHz
0
-87 -77 -67 -57 -47 -37 -27 -17 -7
Input Amplitude - dBFS
Figure 15.
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