Datasheet

Data Sheet AD5122A/AD5142A
Rev. A | 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
10939-024
Figure 24. Incremental Wiper On Resistance vs. 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)
AD5142A
AD5122A
10kΩ + 0pF
10kΩ + 75pF
10kΩ + 150pF
10kΩ + 250pF
100kΩ + 0pF
100kΩ + 75pF
100kΩ + 150pF
100kΩ + 250pF
10939-025
Figure 25. Maximum Bandwidth vs. Code and 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
10939-026
Figure 26. 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
–4
0
0
–50
0
–60
0 –3
0
0
–2
0
0
–1
0
0
0 1
0
0 2
00
3
00
40
0
50
0
60
0
CUMULATIVE PROBABILITY
PROBABILITY DENSITY
RESISTOR DRIFT (ppm)
10939-027
Figure 27. Resistor Lifetime Drift
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
10 100 1k 10k 100k 1M 10M
PSRR (dB)
FREQUENCY (Hz)
10kΩ
100kΩ
V
DD
= 5V ±
10% AC
V
SS
= GND, V
A
=
4V,
V
B
= GND
COD
E = M
IDSCALE
10939-028
Figure 28. 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)
10939-029
Figure 29. Digital Feedthrough