AD5781 Analog Devices, AD5781 Datasheet - Page 16

• Manufacturer Part Number: AD5781
• Manufacturer: Analog Devices

Specifications of AD5781

• Resolution (bits): 18bit
• Dac Update Rate: 1MSPS
• Dac Settling Time: 1µs
• Max Pos Supply (v): +33V
• Single-supply: No
• Dac Type: Unbuffered Vout
• Dac Input Format: Ser,SPI

AD5781
10.8
10.6
10.4
10.2
10.0
9.8
9.6
9.4
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
10
9
8
7
6
5
4
3
2
1
0
0
Figure 43. 6 MSB Segment Glitch Energy for ±10 V V
0
Figure 44. 6 MSB Segment Glitch Energy for 10 V V
5V
OUTPUT GAIN OF 1
BIAS COMPENSATION MODE
20pF COMPENSATION CAPACITOR
RC LOW-PASS FILTER
10V V
OUTPUT GAIN OF 1
BIAS COMPENSATION MODE
20pF COMPENSATION CAPACITOR
RC LOW-PASS FILTER
V
REF
Figure 42. 125 Code Step Settling Time
REF
1
POSITIVE CODE
CHANGE
NEGATIVE CODE
CHANGE
2
TIME (µs)
±10V V
OUTPUT GAIN OF 1
BIAS COMPENSATION MODE
20pF COMPENSATION CAPACITOR
RC LOW-PASS FILTER
CODE
CODE
REF
3
NEGATIVE CODE
CHANGE
POSITIVE CODE
CHANGE
4
REF
REF
5
Rev. C | Page 16 of 28
–200
–400
–600
–10
–20
–0.2
800
600
400
200
Figure 47. Voltage Output Noise, 0.1 Hz to 10 Hz Bandwidth
3.0
2.6
2.2
1.8
1.4
1.0
0.6
0.2
40
30
20
10
0
–1.0
0
0
Figure 45. 6 MSB Segment Glitch Energy for 5 V V
T
V
V
V
V
Figure 46. Midscale Peak-to-Peak Glitch for ±10 V
5V V
OUTPUT GAIN OF 1
BIAS COMPENSATION MODE
20pF COMPENSATION CAPACITOR
RC LOW-PASS FILTER
A
DD
SS
REFP
REFN
= 25°C
= –15V
1
= +15V
REF
= +10V
= –10V
–0.5
2
POSITIVE CODE
CHANGE
3
0
TIME (Seconds)
4
±10V V
OUTPUT GAIN OF 1
BIAS COMPENSATION MODE
20pF COMPENSATION CAPACITOR
RC LOW-PASS FILTER
TIME (µs)
MID-SCALE CODE LOADED
OUTPUT UNBUFFERED
AD8676 REFERENCE BUFFERS
CODE
0.5
5
REF
6
C
C
C
C
1.0
X
X
X
X
NEGATIVE CODE
CHANGE
7
= 143pF + 0pF
= 143pF + 220pF
= 143pF + 470pF
= 143pF + 1,000pF
Data Sheet
8
1.5
REF
9
2.0
10