Datasheet
Data Sheet AD5253/AD5254
Rev. C | Page 5 of 32
10 kΩ, 50 kΩ, 100 kΩ VERSIONS
V
DD
= +3 V ± 10% or +5 V ± 10%, V
SS
= 0 V or V
DD
/V
SS
= ±2.5 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
Resolution N AD5253/AD5254 6/8 Bits
Resistor Differential Nonlinearity
2
R-DNL R
WB
, R
WA
= NC, AD5253 −0.75 ±0.10 +0.75 LSB
R
WB
, R
WA
= NC, AD5254 −1.00 ±0.25 +1.00 LSB
Resistor Nonlinearity
2
R-INL R
WB
, R
WA
= NC, AD5253 −0.75 ±0.25 +0.75 LSB
R
WB
, R
WA
= NC, AD5254 −2.5 ±1.0 +2.5 LSB
Nominal Resistor Tolerance ΔR
AB
/R
AB
T
A
= 25°C −20 +20 %
Resistance Temperature
Coefficient
(ΔR
AB
/R
AB
) × 10
6
/ΔT 650 ppm/°C
Wiper Resistance
R
W
I
W
= 1 V/R, V
DD
= 5 V
75
130
Ω
I
W
= 1 V/R, V
DD
= 3 V 200 300 Ω
Channel-Resistance Matching ΔR
AB1
/ΔR
AB2
R
AB
= 10 kΩ, 50 kΩ 0.15 %
R
AB
= 100 kΩ 0.05 %
DC CHARACTERISTICS—
POTENTIOMETER DIVIDER MODE
Differential Nonlinearity
3
DNL AD5253 −0.5 ±0.1 +0.5 LSB
AD5254 −1.0 ±0.3 +1.0 LSB
Integral Nonlinearity
3
INL AD5253 −0.50 ±0.15 +0.50 LSB
AD5254
−1.5
±0.5
+1.5
LSB
Voltage Divider
Temperature Coefficient
(ΔV
W
/V
W
) × 10
6
/ΔT Code = half scale 15 ppm/°C
Full-Scale Error V
WFSE
Code = full scale, AD5253 −1.0 −0.3 0 LSB
Code = full scale, AD5254 −3 −1 0 LSB
Zero-Scale Error V
WZSE
Code = zero scale, AD5253 0 0.3 1.0 LSB
Code = zero scale, AD5254 0 1.2 3.0 LSB
RESISTOR TERMINALS
Voltage Range
4
V
A
, V
B
, V
W
V
SS
V
DD
V
Capacitance
5
A, B C
A
, C
B
f = 1 kHz, measured to GND,
code = half scale
85 pF
Capacitance
5
W C
W
f = 1 kHz, measured to GND,
code = half scale
95 pF
Common-Mode Leakage Current
I
CM
V
A
= V
B
= V
DD
/2
0.01
1
µA
DIGITAL INPUTS AND OUTPUTS
Input Logic High V
IH
V
DD
= 5 V, V
SS
= 0 V 2.4 V
V
DD
/V
SS
= +2.7 V/0 V or V
DD
/V
SS
= ±2.5 V 2.1 V
Input Logic Low V
IL
V
DD
= 5 V, V
SS
= 0 V 0.8 V
V
DD
/V
SS
= +2.7 V/0 V or V
DD
/V
SS
= ±2.5 V 0.6 V
Output Logic High (SDA) V
OH
R
PULL-UP
= 2.2 kΩ to V
DD
= 5 V, V
SS
= 0 V 4.9 V
Output Logic Low (SDA) V
OL
R
PULL-UP
= 2.2 kΩ to V
DD
= 5 V, V
SS
= 0 V 0.4 V
WP
Leakage Current I
WP
WP
= V
DD
8 µA
A0 Leakage Current
I
A0
A0 = GND
3
µA
Input Leakage Current
(Other than
WP
and A0)
I
I
V
IN
= 0 V or V
DD
±1 µA
Input Capacitance
5
C
I
5 pF