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AD7679ASTRL Fiches technique(PDF) 12 Page - Analog Devices

No de pièce AD7679ASTRL
Description  18-Bit, 2.5 LSB INL, 570 kSPS SAR ADC
PDF  28 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD7679ASTRL Fiches technique(HTML) 12 Page - Analog Devices

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AD7679
Rev. 0 | Page 12 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
CODE
2.5
0
65536
131072
196608
262144
1.5
1.0
0
–2.5
0.5
–0.5
03085-0-005
–1.0
2.0
–2.0
–1.5
Figure 5. Integral Nonlinearity vs. Code
CODE IN HEX
70000
50000
30000
0
20000
10000
40000
1FEBE
1FEBD
1FEC0 1FEC1 1FEC2 1FEC3 1FEC4 1FEC5 1FEC6
VREF = 5V
60000
0
0
0
0
03085-0-006
73
7584
58510 59001
4616
264
Figure 6. Histogram of 131,072 Conversions of a
DC Input at the Code Transition
POSITIVE INL (LSB)
100
0
60
20
0
40
80
0.5
1.0
1.5
2.0
03085-0-007
2.5
Figure 7. Typical Positive INL Distribution (424 Units)
CODE
2.0
0
65536
131072
196608
262144
1.5
1.0
0
–1.0
0.5
–0.5
03085-0-008
Figure 8. Differential Nonlinearity vs. Code
CODE IN HEX
90000
60000
40000
20000
0
30000
10000
50000
1FEBF
1FEBE
1FEC0 1FEC1 1FEC2 1FEC3 1FEC4 1FEC5 1FEC6
VREF = 5V
70000
80000
0
59
799
2
0
22496
23080
3838
03085-0-009
Figure 9. Histogram of 131,072 Conversions of a
DC Input at the Code Center
NEGATIVE INL (LSB)
120
–2.5
80
60
20
0
–2.0
–1.5
–1.0
–0.5
03085-0-010
100
40
0
Figure 10. Typical Negative INL Distribution (424 Units)



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