Datasheet

AD5228
Rev. A | Page 3 of 20
ELECTRICAL CHARACTERISTICS
10 kΩ, 50 kΩ, 100 kΩ versions: V
DD
= 3 V ± 10% or 5 V ± 10%, V
A
= V
DD
, V
B
= 0 V, −40°C < T
A
< +105°C, unless otherwise noted.
Table 2.
Parameter Symbol Conditions Min Typ
1
Max Unit
DC CHARACTERISTICS, RHEOSTAT MODE
Resistor Differential Nonlinearity
2
R-DNL R
WB
, A terminal = no connect −0.5 ±0.05 +0.5 LSB
Resistor Integral Nonlinearity
2
R-INL R
WB
, A terminal = no connect −0.5 ±0.1 +0.5 LSB
Nominal Resistor Tolerance
3
∆R
AB
/R
AB
−20 +20 %
Resistance Temperature Coefficient (∆R
AB
/R
AB
) × 10
4
/∆T 35 ppm/°C
Wiper Resistance R
W
V
DD
= 2.7 V 100 250 Ω
V
DD
= 2.8 V to 5.5 V 50 200 Ω
DC CHARACTERISTICS, POTENTIOMETER DIVIDER MODE
(Specifications apply to all RDACs)
Resolution N 5 Bits
Integral Nonlinearity
3
INL −0.5 ±0.05 +0.5 LSB
Differential Nonlinearity
3, 5
DNL −0.5 ±0.05 +0.5 LSB
Voltage Divider Temperature Coefficient (∆V
W
/V
W
) × 10
4
/∆T Midscale 5 ppm/°C
Full-Scale Error V
WFSE
≥+15 steps from midscale −1 .2 −0.5 0 LSB
Zero-Scale Error V
WZSE
≤−16 steps from midscale 0 0.3 0.6 LSB
RESISTOR TERMINALS
Voltage Range
6
V
A, B, W
With respect to GND 0 V
DD
V
Capacitance
4
A, B C
A, B
f = 1 MHz, measured to GND 140 pF
Capacitance
4
W C
W
f = 1 MHz, measured to GND 150 pF
Common-Mode Leakage I
CM
V
A
= V
B
= V
W
1 nA
PU, PD INPUTS
Input High V
IH
V
DD
= 5 V 2.4 5.5 V
Input Low V
IL
V
DD
= 5 V 0 0.8 V
Input Current I
I
V
IN
= 0 V or 5 V ±1 μA
Input Capacitance
4
C
I
5 pF
POWER SUPPLIES
Power Supply Range V
DD
V
DD
= 5 V, PU = PD = V
DD
2.7 5.5 V
Supply Standby Current I
DD_STBY
0.4 3 μA
Supply Active Current
7
I
DD_ACT
V
DD
= 5 V, PU or PD = 0 V
50 110 μA
Power Dissipation
7, 8
P
DISS
V
DD
= 5 V 17 μW
Power Supply Sensitivity PSSR V
DD
= 5 V ± 10% 0.01 0.05 %/%
Footnotes on next page.