Datasheet

Data Sheet AD5111/AD5113/AD5115
Rev. | Page 15 of 24
–60
–50
–40
–30
–10
0
10k 1M100k
GAIN (dB)
FREQUENCY (Hz)
–20
–80
–70
09654-025
0x40
0x10
0x04
0x02
0x08
0x01
0x20
0x00
(0x20)
(0x08)
(0x02)
(0x01)
(0x04)
(0x00)
(0x10)
[0x10]
[0x04]
[0x01]
[0x00]
[0x02]
[0x08]
AD5111 (AD5113) [AD5115]
Figure 24. 80 kΩ Gain vs. Frequency vs. Code
09654-049
–80
–70
–60
–50
–40
–30
–20
–10
0
10k 100k 1M 10M
PHASE (Degrees)
FREQUENCY (Hz)
FULL SCALE
HALF SCALE
QUARTER SCALE
R
AB
= 10kΩ
Figure 25. Normalized Phase Flatness vs. Frequency
0
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
THD + N (dB)
FREQUENCY (Hz)
20 200 2k 20k 200k
10kΩ
5kΩ
80kΩ
09654-027
V
DD
= 5V
V
A
= 2.5V + 1V
RMS
V
B
= 2.5V
CODE = HALF SCALE
NOISE FILTER = 22kHz
Figure 26. Total Harmonic Distortion + Noise (THD + N) vs. Frequency
0
10
20
30
40
50
60
70
BANDWIDTH (MHz)
80
CODE (Decimal)
09654-028
5k + 250pF
10k + 75pF
10k + 150pF
10k + 250pF
80k + 0pF
80k + 75pF
80k + 150pF
80k + 250pF
5k + 0pF
5k + 75pF
5k + 150pF
10k + 0pF
0
10 20 30 40 50 60
0 5 10 15 20 25 30
0 5 10 15
AD5111
AD5113
AD5115
Figure 27. Maximum Bandwidth vs. Code vs. Net Capacitance
0
30
60
90
INCREMENTAL WIPER ON RESISTANCE (Ω)
120
150
0 1 2 3
V
DD
(V)
4 5 6
5.5V
5V
3.3V
2.7V
2.3V
09654-029
T
A
= 25°C
Figure 28. Incremental Wiper On Resistance vs. V
DD
THD + N (dB)
AMPLITUDE (V rms)
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
0.001 0.01 0.1 1
09654-030
10kΩ
5kΩ
80kΩ
V
DD
= 5V
V
A
= 2.5V + V
IN
V
B
= 2.5V
f
IN
= 1kHz
CODE = HALF SCALE
NOISE FILTER = 22kHz
Figure 29. Total Harmonic Distortion + Noise (THD + N) vs. Amplitude
A