EVAL-AD7606SDZ View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
EVAL-AD7606SDZ
Analog Devices
'EVAL-AD7606SDZ' PDF : 36 Pages View PDF
AD7606/AD7606-6/AD7606-4
Figure 49 to Figure 55 illustrate the effect of oversampling on
the code spread in a dc histogram plot. As the oversample rate
is increased, the spread of the codes is reduced.
1000
900
800
NO OVERSAMPLING
FSAMPLE = 200kSPS
AVCC = 5V
VDRIVE = 2.5V
928
887
700
600
500
400
300
200
131
97
100
0
3
2
0
–3
–2
–1
0
1
2
3
CODE (LSB)
Figure 49. Histogram of Codes—No OS (Six Codes)
1400
1200
OVERSAMPLING BY 2
FSAMPLE = 100kSPS
AVCC = 5V
VDRIVE = 2.5V
1000
800
1148
804
600
400
200
80
0
0
0
–3
–2
–1
0
16
0
1
2
3
CODE (LSB)
Figure 50. Histogram of Codes—OS × 2 (Four Codes)
1400
1200
OVERSAMPLING BY 4
FSAMPLE = 50kSPS
AVCC = 5V
VDRIVE = 2.5V
1000
800
1262
764
600
400
200
0
0
0
19
3
0
–3
–2
–1
0
1
2
3
CODE (LSB)
Figure 51. Histogram of Codes—OS × 4 (Four Codes)
Rev. 0 | Page 30 of 36
1400
1200
OVERSAMPLING BY 8
FSAMPLE = 25kSPS
AVCC = 5V
VDRIVE = 2.5V
1000
800
1263
783
600
400
200
0
0
2
0
0
0
–3
–2
–1
0
1
2
3
CODE (LSB)
Figure 52. Histogram of Codes—OS × 8 (Three Codes)
1400
1200
OVERSAMPLING BY 16
FSAMPLE = 12.5kSPS
AVCC = 5V
VDRIVE = 2.5V
1000
1453
800
600
595
400
200
0
0
0
0
0
0
–3
–2
–1
0
1
2
3
CODE (LSB)
Figure 53. Histogram of Codes—OS × 16 (Two Codes)
1600
1400
1200
OVERSAMPLING BY 32
FSAMPLE = 6.125kSPS
AVCC = 5V
VDRIVE = 2.5V
1417
1000
800
631
600
400
200
0
0
0
0
0
0
–3
–2
–1
0
1
2
3
CODE (LSB)
Figure 54. Histogram of Codes—OS × 32 (Two Codes)
1600
1400
1200
OVERSAMPLING BY 64
FSAMPLE = 3kSPS
AVCC = 5V
VDRIVE = 2.5V
1679
1000
800
600
400
369
200
0
0
0
0
0
0
–3
–2
–1
0
1
2
3
CODE (LSB)
Figure 55. Histogram of Codes—OS × 64 (Two Codes)
Share Link: 