Datasheet

Data Sheet AD5110/AD5112/AD5114
Rev. B | Page 7 of 28
ELECTRICAL CHARACTERISTICSAD5114
10 kΩ and 80 kΩ versions: V
DD
= 2.3 V to 5.5 V, V
LOGIC
= 1.8 V to V
DD
, V
A
= V
DD
, V
B
= 0 V, −40°C < T
A
< +125°C, unless otherwise noted.
Table 4.
Parameter Symbol Test Conditions/Comments Min Typ
1
Max Unit
DC CHARACTERISTICSRHEOSTAT MODE
Resolution N 5 Bits
Resistor Integral Nonlinearity
2
R-INL 0.5 +0.5 LSB
Resistor Differential Nonlinearity
2
R-DNL 0.25 +0.25 LSB
Nominal Resistor Tolerance ΔR
AB
/R
AB
−8 +8 %
Resistance Temperature Coefficient
3
(ΔR
AB
/R
AB
)/ΔT × 10
6
Code = full scale 35 ppm/°C
Wiper Resistance
R
W
Code = zero scale 70 140
R
BS
Code = bottom scale
45
80
R
TS
Code = top scale
70
140
DC CHARACTERISTICSPOTENTIOMETER
DIVIDER MODE
Integral Nonlinearity
4
INL 0.25 +0.25 LSB
Differential Nonlinearity
4
DNL
0.25
+0.25
LSB
Full-Scale Error V
WFSE
R
AB
= 10 kΩ −1 LSB
R
AB
= 80 kΩ 0.5 LSB
Zero-Scale Error V
WZSE
R
AB
= 10 kΩ 1 LSB
R
AB
= 80 kΩ
0.25
LSB
Voltage Divider Temperature Coefficient
3
(ΔV
W
/V
W
)/ΔT × 10
6
Code = half scale ±10 ppm/°C
RESISTOR TERMINALS
Maximum Continuous I
A
, I
B
, and I
W
Current
3
R
AB
= 10 kΩ −6 +6 mA
R
AB
= 80 kΩ 1.5 +1.5 mA
Terminal Voltage Range
5
GND V
DD
V
Capacitance A, Capacitance B
3
C
A
, C
B
f = 1 MHz, measured to GND,
code = half scale, V
W
= V
A
=
2.5 V or V
W
= V
B
= 2.5 V
20 pF
Capacitance W
3
C
W
f = 1 MHz, measured to
GND, code = half scale, V
A
=
V
B
= 2.5 V
35 pF
Common-Mode Leakage Current
3
V
A
= V
W
= V
B
500 ±15 +500 nA
DIGITAL INPUTS
Input Logic
3
High V
INH
V
LOGIC
= 1.8 V to 2.3 V 0.8 × V
LOGIC
V
V
LOGIC
= 2.3 V to 5.5 V 0.7 × V
LOGIC
V
Low V
INL
V
LOGIC
= 1.8 V to 2.3 V 0.2 × V
LOGIC
V
V
LOGIC
= 2.3 V to 5.5 V 0.3 × V
LOGIC
V
Input Hysteresis
3
V
HYST
0.1 × V
LOGIC
V
Input Current
3
I
N
±1 µA
Input Capacitance
3
C
IN
5 pF
DIGITAL OUTPUT (SDA)
Output Low Voltage
3
V
OL
I
SINK
= 3 mA
0.2
V
I
SINK
= 6 mA 0.4 V
Three-State Leakage Current 1 +1 µA
Three-State Output Capacitance
3
2 pF