AD5228
Rev. A | Page 3 of 20
ELECTRICAL CHARACTERISTICS
10 kΩ, 50 kΩ, 100 kΩ versions: VDD = 3 V ± 10% or 5 V ± 10%, VA = VDD, VB = 0 V, 40°C < TA < +105°C, unless otherwise noted.
Table 2.
Parameter
Symbol
Conditions
Min
Max
Unit
DC CHARACTERISTICS, RHEOSTAT MODE
Resistor Differential Nonlinearit
y2R-DNL
RWB, A terminal = no connect
0.5
±0.05
+0.5
LSB
Resistor Integral Nonlinearit
y2R-INL
RWB, A terminal = no connect
0.5
±0.1
+0.5
LSB
Nominal Resistor Toleranc
e3RAB/RAB
20
+20
%
Resistance Temperature Coefficient
35
ppm/°C
Wiper Resistance
RW
VDD = 2.7 V
100
250
Ω
VDD = 2.8 V to 5.5 V
50
200
Ω
DC CHARACTERISTICS, POTENTIOMETER DIVIDER MODE
(Specifications apply to all RDACs)
Resolution
N
5
Bits
INL
0.5
±0.05
+0.5
LSB
Differential Nonlinearit
y3, 5DNL
0.5
±0.05
+0.5
LSB
Voltage Divider Temperature Coefficient
Midscale
5
ppm/°C
Full-Scale Error
VWFSE
≥+15 steps from midscale
1 .2
0.5
0
LSB
Zero-Scale Error
VWZSE
≤16 steps from midscale
0
0.3
0.6
LSB
RESISTOR TERMINALS
VA, B, W
With respect to GND
0
VDD
V
CA, B
f = 1 MHz, measured to GND
140
pF
CW
f = 1 MHz, measured to GND
150
pF
Common-Mode Leakage
ICM
VA = VB = VW
1
nA
PU, PD INPUTS
Input High
VIH
VDD = 5 V
2.4
5.5
V
Input Low
VIL
VDD = 5 V
0
0.8
V
Input Current
II
VIN = 0 V or 5 V
±1
μA
CI
5
pF
POWER SUPPLIES
Power Supply Range
VDD
VDD = 5 V, PU = PD = VDD
2.7
5.5
V
Supply Standby Current
IDD_STBY
0.4
3
μA
IDD_ACT
VDD = 5 V, PU or PD = 0 V
50
110
μA
PDISS
VDD = 5 V
17
μW
Power Supply Sensitivity
PSSR
VDD = 5 V ± 10%
0.01
0.05
%/%
Footnotes on next page.