Datasheet

Data Sheet AD5232
Rev. C | Page 3 of 24
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS—10 kΩ, 50 kΩ, 100 kΩ VERSIONS
V
DD
= 3 V ± 10% or 5 V ± 10% and V
SS
= 0 V, V
A
= +V
DD
, V
B
= 0 V, −40°C < T
A
< +85°C, unless otherwise noted.
Table 1.
Parameter Symbol Conditions Min Typ
1
Max Unit
DC CHARACTERISTICS,
RHEOSTAT MODE
Specifications apply to all VRs
Resistor Differential Nonlinearity
2
R-DNL R
WB
, V
A
= NC −1 ±1/2 +1 LSB
Resistor Nonlinearity
2
R-INL R
WB
, V
A
= NC −0.4 +0.4 % FS
Nominal Resistor Tolerance ∆R
AB
−40 +20 %
Resistance Temperature Coefficient ∆R
AB
/∆T 600 ppm/°C
Wiper Resistance R
W
I
W
= 100 µA, V
DD
= 5.5 V, code = 0x1E 50 100 Ω
I
W
= 100 µA, V
DD
= 3 V, code = 0x1E 200 Ω
POTENTIOMETER DIVIDER MODES
Resolution N 8 Bits
Differential Nonlinearity
3
DNL
−1
±1/2
+1
LSB
Integral Nonlinearity
3
INL
−0.4
+0.4
% FS
Voltage Divider Temperature
Coefficient
∆V
W
/ΔT Code = half scale 15 ppm/°C
Full-Scale Error V
WFSE
Code = full scale −3 0 % FS
Zero-Scale Error V
WZSE
Code = zero scale 0 3 % FS
RESISTOR TERMINALS
Terminal Voltage Range
4
V
A
, V
B
, V
W
V
SS
V
DD
V
Capacitance Ax, Bx
5
C
A
, C
B
f = 1 MHz, measured to GND, code = half-scale 45 pF
Capacitance Wx
5
C
W
f = 1 MHz, measured to GND, code = half scale
60
pF
Common-Mode Leakage Current
5, 6
I
CM
V
W
= V
DD
/2 0.01 1 µA
DIGITAL INPUTS AND OUTPUTS
Input Logic High V
IH
With respect to GND, V
DD
= 5 V 2.4 V
Input Logic Low V
IL
With respect to GND, V
DD
= 5 V 0.8 V
Input Logic High V
IH
With respect to GND, V
DD
= 3 V 2.1 V
Input Logic Low V
IL
With respect to GND, V
DD
= 3 V 0.6 V
Input Logic High V
IH
With respect to GND, V
DD
= +2.5 V, V
SS
= −2.5 V 2.0 V
Input Logic Low V
IL
With respect to GND, V
DD
= +2.5 V, V
SS
= −2.5 V 0.5 V
Output Logic High (SDO and RDY)
V
OH
R
PULL-UP
= 2.2 kΩ to 5 V
4.9
V
Output Logic Low V
OL
I
OL
= 1.6 mA, V
LOGIC
= 5 V 0.4 V
Input Current I
IL
V
IN
= 0 V or V
DD
±2.5 µA
Input Capacitance
5
C
IL
4 pF
POWER SUPPLIES
Single-Supply Power Range V
DD
V
SS
= 0 V 2.7 5.5 V
Dual-Supply Power Range V
DD
/V
SS
±2.25 ±2.75 V
Positive Supply Current I
DD
V
IH
= V
DD
or V
IL
= GND 3.5 10 µA
Programming Mode Current I
DD(PG)
V
IH
= V
DD
or V
IL
= GND 35 mA
Read Mode Current
7
I
DD(XFR)
V
IH
= V
DD
or V
IL
= GND 0.9 3 9 mA
Negative Supply Current I
SS
V
IH
= V
DD
or V
IL
= GND,
V
DD
= +2.5 V, V
SS
= −2.5 V 3.5 10 µA
Power Dissipation
8
P
DISS
V
IH
= V
DD
or V
IL
= GND 0.018 0.05 mW
Power Supply Sensitivity
5
PSS ∆V
DD
= 5 V ± 10% 0.002 0.01 %/%