Datasheet

AD7983
Rev. A | Page 8 of 24
TYPICAL PERFORMANCE CHARACTERISTICS
VDD = 2.5 V, REF = 5 V, VIO = 3.3 V, unless otherwise noted.
1.25
–1.25
0 65536
06974-026
CODE
INL (LSB)
1.00
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
16384 32768 49152
POSITIVE INL: 0.30LSB
NEGATIVE INL: –0.37LSB
Figure 6. Integral Nonlinearity vs. Code
120k
0
7FB6
000055
06974-041
CODE IN HEX
COUNTS
100k
80k
60k
40k
20k
7FB7 7FB8 7FB9 7FBA 7FBB 7FBC 7FBD 7FBE 7FBF 7FC0 7FC1 7FC2
580000
17590
16604
96765
Figure 7. Histogram of a DC Input at the Code Center
0
–180
0
06974-028
FREQUENCY (kHz)
AMPLITUDE (dB of Full Scale)
–20
–40
–60
–80
–100
–120
–140
–160
100 200 300 400 500 600
f
S
= 1.33MSPS
f
IN
= 10kHz
SNR = 91.6dB
THD = –114.9dB
SFDR = 113.8dB
SINAD = 91.6dB
Figure 8. FFT Plot
1.00
–1.00
0 65536
06974-029
CODE
DNL (LSB)
16384 32768 49152
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
POSITIVE DNL: 0.14LSB
NEGATIVE DNL: –0.14LSB
Figure 9. Differential Nonlinearity vs. Code
80k
0
7FF7
06974-042
CODE IN HEX
COUNTS
7FF8 7FF9 7FFA 7FFB 7FFC 7FFD 7FFE 7FFF 8000 8001 8002 8003
70k
60k
50k
40k
30k
20k
10k
829
000000000
1146
67532
61565
Figure 10. Histogram of a DC Input at the Code Transition
95
85
–10 0
06974-032
INPUT LEVEL (dB of Full Scale)
SNR (dB)
–9 –8 –7 –6 –5 –4 –3 –2 –1
94
93
92
91
90
89
88
87
86
Figure 11. SNR vs. Input Level