Datasheet

AD5228
Rev. A | Page 9 of 20
120
0
20
40
60
80
100
–40 –20 0 20 40 60 10080
04422-0-020
TEMPERATURE (°C)
WIPER RESISTANCE, R
W
(Ω)
V
DD
= 2.7V
V
DD
= 5.5V
Figure 19. Wiper Resistance vs. Temperature
150
–30
0
30
60
90
120
0 4 8 121620242832
04422-0-021
CODE (Decimal)
RHEOSTAT MODE TEMPCO,
Δ
R
WB
/
Δ
T (ppm/°C)
10kΩ
50kΩ
100kΩ
V
DD
= 5.5V
A = OPEN
Figure 20. Rheostat Mode Tempco ΔR
WB
/ΔT vs. Code
20
–20
–15
–10
–5
0
5
10
15
0 4 8 12 16 20 24 28 32
04422-0-022
CODE (Decimal)
POTENTIOMETER MODE TEMPCO,
Δ
V
WB
/
Δ
T (ppm/
°
C)
10kΩ
50kΩ
100kΩ
V
DD
= V
A
= 5.5V
V
B
= 0V
Figure 21. Potentiometer Mode Tempco ΔV
WB
/ΔT vs. Code
6
–54
–48
–42
–36
–30
–24
–18
–12
–6
0
1k 10k 1M
START 1 000.000Hz STOP 1 000 000.000Hz
REF LEVEL
0dB
/
DI
V
6.0dB
MARKE
R
MAG (A/R)
469 390.941H
z
–8.966dB
100k
04422-0-050
GAIN (dB)
T
A
= 25°C
V
DD
= 5.5V
V
A
= 50mV rms
16 STEPS
8 STEPS
4 STEPS
2 STEPS
1 STEP
Figure 22. Gain vs. Frequency vs. Code, R
AB
= 10 kΩ
6
–54
–48
–42
–36
–30
–24
–18
–12
–6
0
1k 10k 1M
START 1 000.000Hz STOP 1 000 000.000Hz
REF LEVEL
0dB
/
DI
V
6.0dB
MARKE
R
MAG (A/R)
97 525.233H
z
–9.089dB
100k
04422-0-051
GAIN (dB)
T
A
= 25°C
V
DD
= 5.5V
V
A
= 50mV rms
16 STEPS
8 STEPS
4 STEPS
2 STEPS
1 STEP
Figure 23. Gain vs. Frequency vs. Code, R
AB
= 50 kΩ
6
–54
–48
–42
–36
–30
–24
–18
–12
–6
0
1k 10k 1M
START 1 000.000Hz STOP 1 000 000.000Hz
REF LEVEL
0dB
/
DI
V
6.0dB
MARKE
R
MAG (A/R)
51 404.427H
z
–9.123dB
100k
04422-0-052
GAIN (dB)
T
A
= 25°C
V
DD
= 5.5V
V
A
= 50mV rms
16 STEPS
8 STEPS
4 STEPS
2 STEPS
1 STEP
Figure 24. Gain vs. Frequency vs. Code, R
AB
= 100 kΩ