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Datasheet

ManualsBrandsANALOG DEVICES ManualsData collecting ICsData acquisition IC - Digital potentiometer linear Non-permanent TSSOP 14
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Data Sheet AD5293
Rev. E | Page 15 of 24
07675-027
0
–120
–105
–90
–75
–60
–45
–30
–15
THD + N (dB)
FREQUENCY (Hz)
100 1k
10k 100k
V
DD
/V
SS
= ±15V
CODE = HALF SCALE
V
IN
= 1V rms
Noise BW = 22kHz
50kΩ
20kΩ
100kΩ
Figure 30. Total Harmonic Distortion + Noise (THD + N) vs. Frequency
0
100,000
200,000
300,000
400,000
500,000
600,000
700,000
BANDWIDTH (Hz)
800,000
900,000
1,000,000
CODE (Decimal)
512
0
128 2566432168
07675-222
20k – 0pF
20k – 75pF
20k – 150pF
20k – 250pF
50k – 0pF
50k – 75pF
50k – 150pF
50k – 250pF
100k – 0pF
100k – 75pF
100k – 150pF
100k – 250pF
Figure 31. Maximum Bandwidth vs. Code vs. Net Capacitance
07675-058
35
–5
0
5
10
15
20
25
30
VOLTAGE (V)
TIME (µs)
V
WB
, CODE: FULL SCALE,
NORMAL MODE
SYNC
–2
–1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
V
DD
/V
SS
= 30V/0V
V
LOGIC
= 5V
V
A
= V
DD
V
B
= V
SS
V
WB
, CODE: HALF-SCALE,
NORMAL MODE
V
WB
, CODE: HALF-SCALE,
R-PERF MODE
20kΩ
50kΩ
100kΩ
20kΩ
50kΩ
100kΩ
V
WB
, CODE: FULL SCALE,
R-PERF MODE
Figure 32. Large Signal Settling Time, Code from Zero Scale to Full Scale
–140
–120
–100
–80
–60
–40
–20
0
0.001
0.01
0.1
1
10
THD + N (dB)
AMPLITUDE (V rms)
07675-220
V
DD
/V
SS
= ±15V,
CODE = HALF SCALE
f
IN
= 1kHz
NOISE BW = 22kHz
50kΩ
20kΩ
100kΩ
Figure 33. Total Harmonic Distortion + Noise (THD + N) vs. Amplitude
8
0
1
2
3
4
5
6
7
0 256 512 768 1023
THEORETICAL I
WB_MAX
(mA)
CODE (Decimal)
07675-029
V
DD
/V
SS
= 30V/0V
V
A
= V
DD
V
B
= V
SS
50kΩ
20kΩ
100kΩ
Figure 34. Theoretical Maximum Current vs. Code
40
32
24
–40
–32
–24
–16
–8
0
8
16
–0.5 0 5 10 15 20 25 30 35 40 45
VOLTAGE (μV)
TIME (µs)
V
DD
/V
SS
= ±15V
V
A
= V
DD
V
B
= V
SS
CODE = HALF CODE
07675-221
Figure 35. Digital Feedthrough
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