Datasheet

AD5231 Data Sheet
Rev. D | Page 10 of 28
CODE (Decimal)
R
W
(Ω)
60
0 256 512 768 1024
128 384 640 896
50
40
30
20
10
0
V
DD
= 2.7V, V
SS
= 0V
T
A
= 25°C
02739-012
Figure 12. Wiper On Resistance vs. Code
TEMPERATURE (°C)
CURRENT (µA)
4
–40 0 40 80–20 20 60 100
3
2
1
0
–1
I
DD
@ V
DD
/V
SS
= 5V/0V
I
SS
@ V
DD
/V
SS
= 5V/0V
I
DD
@ V
DD
/V
SS
= 2.7V/0V
I
SS
@ V
DD
/V
SS
= 2.7V/0V
02739-013
Figure 13. I
DD
vs. Temperature, R
AB
= 10 kΩ
CLOCK FREQUENCY (MHz)
I
DD
(mA)
0.25
0 2 4 6 8 10 12
0.20
0.15
0.10
0.05
0
V
DD
= 5V
V
SS
= 0V
MIDSCALE
ZERO-SCALE
FULL-SCALE
02739-014
Figure 14. I
DD
vs. Clock Frequency, R
AB
= 10 kΩ
FREQUENCY (Hz)
2
0
–16
1k
10k
GAIN (dB)
–2
–4
–12
–6
–8
–10
–14
100k 1M
f
–3dB
= 37kHz, R
AB
= 10kΩ
f
–3dB
= 44kHz, R
AB
= 100kΩ
f
–3dB
= 85kHz, R
AB
= 50kΩ
V
A
= 1mV rms
V
DD
/V
SS
= ±2.5V
D = MIDSCALE
02739-015
Figure 15. −3 dB Bandwidth vs. Resistance (Figure 32)
FREQUENCY (kHz)
0.12
0.01
THD + NOISE (%)
0.10
0.08
0.04
0
0.1 1 10
100
0.06
0.02
V
DD
/V
SS
= ±2.5V
V
A
= 1V rms
R
AB
= 10kΩ
50kΩ
100kΩ
02739-016
Figure 16. Total Harmonic Distortion vs. Frequency
FREQUENCY (Hz)
0
–50
1k
GAIN (dB)
–25
100k
10k
–5
–30
–35
–40
–45
–20
–10
–15
1M
10M
CODE = 0x200
0x100
0x80
0x40
0x20
0x10
0x01
0x02
0x04
0x08
02739-017
Figure 17. Gain vs. Frequency vs. Code, R
AB
= 10 kΩ (Figure 32)