Datasheet

AD977/AD977A
–20–
REV. D
POSITIVE INL – LSB
0
50
10
25
20
15
40
35
45
NUMBER OF UNITS
5
0
30
0.2 0.3 0.4 0.5 0.6 0.8 0.9
1
1.1 1.2 2.9 1.4 1.5 1.6 1.7 1.8
2
2.1 2.2 2.3 2.4 2.6 2.7 2.8
Figure 20. Typical Positive INL Distribution (999 Units)
NEGATIVE INL – LSB
–2.5 –2.4 –2.3 –2.2
–2.1
–2.0 –1.9 –1.8 –1.7 –1.6 –1.5 –1.4 –1.3 –1.2
–1.1
–1.0 –0.9 –0.8 –0.7 –0.6 –0.5 –0.4 –0.3 –0.2
60
30
20
50
NUMBER OF UNITS
10
0
40
–0.1
Figure 21. Typical Negative INL Distribution (999 Units)
POSITIVE DNL – LSB
60
20
NUMBER OF UNITS
0
40
80
100
120
0.02 0.10 0.19 0.27 0.36 0.44 0.52 0.61 0.69 0.77 0.86 0.94 1.02 1.11 1.19 1.27 1.36 1.44 1.53 1.61 1.69 1.78 1.86 1.94 2.03
Figure 22. Typical Positive DNL Distribution (999 Units)
60
30
20
50
NUMBER OF UNITS
10
0
40
–1.17
–1.12
–1.02
–0.92
NEGATIVE DNL – LSB
–1.07
–0.97
70
80
90
–1.22
–0.87 –0.82 –0.78 –0.73 –0.68 –0.63 –0.58 –0.53 –0.48 –0.43 –0.38 –0.33 –0.28 –0.23 –0.18 –0.14 –0.09 –0.04
Figure 23. Typical Negative DNL Distribution (999 Units)
SNR+D (dB) FOR AD977A
90
80
70
60
50
40
30
20
10
SINAD (dB) FOR V
IN
= 0dB
1 10 100 1000
INPUT SIGNAL FREQUENCY – kHz
SNR+D (dB) FOR AD977
Figure 24. S/(N+D) vs. Input Frequency
TEMPERATURE – C
110
100
80
–75 150–50
SFDR, S/N+D – dB
–25 0 25 50 75 100 125
90
105
95
85
–80
–90
–110
–100
–85
–95
–105
SFDR
THD
SNRD
THD – dB
Figure 25. AC Parameters vs. Temperature