AD5791 Просмотр технического описания (PDF) - Analog Devices
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AD5791 Datasheet PDF : 28 Pages
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Data Sheet
10.8
±10V VREF
OUTPUT GAIN OF 1
10.6
BIAS COMPENSATION MODE
20pF COMPENSATION CAPACITOR
RC LOW-PASS FILTER
10.4
10.2
10.0
9.8
9.6
9.4
0
1
2
3
4
5
TIME (µs)
Figure 41. 500 Code Step Settling Time
10
5V VREF
9 OUTPUT GAIN OF 1
BIAS COMPENSATION MODE
8 20pF COMPENSATION CAPACITOR
RC LOW-PASS FILTER
7
6
5
POSITIVE CODE
CHANGE
4
3
2
1
0
NEGATIVE CODE
CHANGE
CODE
Figure 42. 6 MSB Segment Glitch Energy for ±10 V VREF
4.0
10V VREF
3.5
OUTPUT GAIN OF 1
BIAS COMPENSATION MODE
20pF COMPENSATION CAPACITOR
3.0 RC LOW-PASS FILTER
NEGATIVE CODE
2.5
CHANGE
2.0
1.5
1.0
0.5
0
POSITIVE CODE
CHANGE
CODE
Figure 43. 6 MSB Segment Glitch Energy for +10 V VREF
AD5791
3.0
5V VREF
2.6
OUTPUT GAIN OF 1
BIAS COMPENSATION MODE
20pF COMPENSATION CAPACITOR
2.2 RC LOW-PASS FILTER
1.8
POSITIVE CODE
CHANGE
1.4
1.0
0.6
0.2
–0.2
NEGATIVE CODE
CHANGE
CODE
Figure 44. 6 MSB Segment Glitch Energy for +5 V VREF
40
±10V VREF
OUTPUT GAIN OF 1
30
BIAS COMPENSATION MODE
20pF COMPENSATION CAPACITOR
RC LOW-PASS FILTER
20
10
0
–10
–20
–1.0
–0.5
CX = 143pF + 0pF
CX = 143pF + 220pF
CX = 143pF + 470pF
CX = 143pF + 1,000pF
0
0.5
1.0
1.5
2.0
TIME (µs)
Figure 45. Midscale Peak-to-Peak Glitch for ±10 V
800
TA = 25°C
VDD = +15V
600 VSS = –15V
VREFP = +10V
VREFN = –10V
400
MIDSCALE CODE LOADED
OUTPUT UNBUFFERED
AD8676 REFERENCE BUFFERS
200
0
–200
–400
–600
01
2
34
5
6
78
9 10
TIME (Seconds)
Figure 46. Voltage Output Noise, 0.1 Hz to 10 Hz Bandwidth
Rev. D | Page 15 of 28
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