Datasheet

Data Sheet AD5122/AD5142
Rev. 0 | Page 17 of 32
0
100
200
300
400
500
600
0 1
2
3
4 5
WIPER ON RESISTANCE (Ω)
VOLTAGE (V)
100kΩ, V
DD
= 2.3V
100kΩ, V
DD
= 2.7V
100kΩ, V
DD
= 3V
100kΩ, V
DD
= 3.6V
100kΩ, V
DD
= 5V
100kΩ, V
DD
= 5.5V
10kΩ, V
DD
= 2.3V
10kΩ, V
DD
= 2.7V
10kΩ, V
DD
= 3V
10kΩ, V
DD
= 3.6V
10kΩ, V
DD
= 5V
10kΩ, V
DD
= 5.5V
10880-026
Figure 26. Incremental Wiper On Resistance vs. Positive Power Supply (V
DD
)
0
1
2
3
4
5
6
7
8
9
10
0 20 40 60 80 100 120
0 10 20 30 40 50 60
BANDWIDTH (MHz)
CODE (Decimal)
AD5142
AD5122
10k
Ω + 0pF
10k
Ω + 75pF
10k
Ω + 150pF
10kΩ
+ 250pF
100kΩ
+ 0pF
100kΩ + 75pF
100kΩ + 150pF
100kΩ + 250pF
10880-027
Figure 27. Maximum Bandwidth vs. Code vs. Net Capacitance
–0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0
5
10
15
RELATIVE VOLTAGE (V)
TIME (µs)
0x80 TO 0x7F 100kΩ
0x80 TO 0x7F 10kΩ
10880-028
Figure 28. Maximum Transition Glitch
0
0
.2
0
.
4
0.6
0.8
1.0
1.2
0
0
.
0005
0.0010
0
.0015
0.0020
0
.
0025
–400
–500
–600 –300 –200 –100 0 100 200 300 400 500 600
CUMULATIVE PROBABILITY
PROBABILITY DENSITY
RESISTOR DRIFT (ppm)
10880-029
Figure 29. Resistor Lifetime Drift
10880-030
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
10 100 1k 10k 100k 1M 10M
PSRR (dB)
FREQUENCY (Hz)
V
DD
= 5V ±10% AC
V
SS
= GND, V
A
= 4V, V
B
= GND
CODE = MIDSCALE
10kΩ, RDAC1
100kΩ, RDAC1
Figure 30. Power Supply Rejection Ratio (PSRR) vs. Frequency
–0.020
–0.015
–0.010
–0.005
0
0.005
0.010
0.015
0.020
0 500 1000 1500 2000
RELATIVE VOLTAGE (V)
TIME (ns)
10880-031
Figure 31. Digital Feedthrough