Datasheet

Data Sheet AD5272/AD5274
Rev. D | Page 5 of 28
ELECTRICAL CHARACTERISTICS—AD5274
V
DD
= 2.7 V to 5.5 V, V
SS
= 0 V; V
DD
= 2.5 V to 2.75 V, V
SS
= −2.5 V to −2.75 V; −40°C < T
A
< +125°C, unless otherwise noted.
Table 4.
Parameter Symbol Test Conditions/Comments Min Typ
1
Max Unit
DC CHARACTERISTICS—
RHEOSTAT MODE
Resolution 8 Bits
Resistor Integral Nonlinearity
2, 3
R-INL −1 +1 LSB
Resistor Differential
Nonlinearity
2
R-DNL
−1 +1 LSB
Nominal Resistor Tolerance
R-Perf Mode
4
See Table 5 and Table 6 −1 ±0.5 +1 %
Normal Mode
±15
%
Resistance Temperature
Coefficient
5, 6
Code = full scale 5 ppm/°C
Wiper Resistance Code = zero scale 35 70 Ω
RESISTOR TERMINALS
Terminal Voltage Range
5, 7
V
SS
V
DD
V
Capacitance
5
A f = 1 MHz, measured to GND, code = half scale 90 pF
Capacitance
5
W f = 1 MHz, measured to GND, code = half scale 40 pF
Common-Mode Leakage
Current
5
V
A
= V
W
50 nA
DIGITAL INPUTS
Input Logic
5
High
V
INH
2.0
V
Low V
INL
0.8 V
Input Current I
IN
±1 µA
Input Capacitance
5
C
IN
5 pF
DIGITAL OUTPUT
Output Voltage
5
High V
OH
R
PULL_UP
= 2.2 kΩ to V
DD
V
DD
− 0.1 V
Low V
OL
R
PULL_UP
= 2.2 kΩ to V
DD
V
DD
= 2.7 V to 5.5 V, V
SS
= 0 V 0.4 V
V
DD
= 2.5 V to 2.75 V, V
SS
= −2.5 V to −2.75 V 0.6 V
Tristate Leakage Current −1 +1 µA
Output Capacitance
5
5 pF
POWER SUPPLIES
Single-Supply Power Range V
SS
= 0 V 2.7 5.5 V
Dual-Supply Power Range ±2.5 ±2.75 V
Supply Current
Positive
I
DD
1
µA
Negative I
SS
−1 µA
OTP Store Current
5, 8
Positive I
DD_OTP_STORE
4 mA
Negative I
SS_OTP_STORE
−4 mA
OTP Read Current
5, 9
Positive I
DD_OTP_READ
500 µA
Negative I
SS_OTP_READ
−500 µA
Power Dissipation
10
V
IH
= V
DD
or V
IL
= GND 5.5 µW
Power Supply Rejection Ratio
5
PSRR ΔV
DD
/ΔV
SS
= ±5 V ± 10% dB
R
AW
= 20 kΩ −66 −55
R
AW
= 50 kΩ −75 −67
R
AW
= 100 kΩ −78 −70