Datasheet

AD5172/AD5173 Data Sheet
Rev. I | Page 4 of 28
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS: 2.5 kΩ
V
DD
= 5 V ± 10%, or 3 V ± 10%; V
A
= V
DD
; V
B
= 0 V; −40°C < T
A
< +125°C; unless otherwise noted.
Table 1.
Parameter Symbol Conditions Min Typ
1
Max Unit
DC CHARACTERISTICS—RHEOSTAT MODE
Resistor Differential Nonlinearity
2
R-DNL R
WB
, V
A
= no connect −2 ±0.1 +2 LSB
Resistor Integral Nonlinearity
2
R-INL R
WB
, V
A
= no connect −14 ±2 +14 LSB
Nominal Resistor Tolerance
3
∆R
AB
T
A
= 25°C −20 +55 %
Resistance Temperature Coefficient (∆R
AB
/R
AB
)/∆T 35 ppm/°C
Wiper Resistance R
WB
Code = 0x00, V
DD
= 5 V 160 200 Ω
DC CHARACTERISTICS—POTENTIOMETER DIVIDER
MODE
4
Differential Nonlinearity
5
DNL −1.5 ±0.1 +1.5 LSB
Integral Nonlinearity
5
INL −2 ±0.6 +2 LSB
Voltage Divider Temperature Coefficient
(ΔV
W
/V
W
)/ΔT
Code = 0x80
15
ppm/°C
Full-Scale Error
V
WFSE
Code = 0xFF
−14
−5.5
0
LSB
Zero-Scale Error V
WZSE
Code = 0x00 0 4.5 12 LSB
RESISTOR TERMINALS
Voltage Range
6
V
A
, V
B
, V
W
GND V
DD
V
Capacitance A, B
7
C
A
, C
B
f = 1 MHz, measured to
GND, code = 0x80
45 pF
Capacitance W
7
C
W
f = 1 MHz, measured to
GND, code = 0x80
60 pF
Shutdown Supply Current
8
I
A_SD
V
DD
= 5.5 V 0.01 1 µA
Common-Mode Leakage I
CM
V
A
= V
B
= V
DD
/2 1 nA
DIGITAL INPUTS AND OUTPUTS
SDA and SCL
Input Logic High
9
V
IH
V
DD
= 5 V 0.7 V
DD
V
DD
+ 0.5 V
Input Logic Low
9
V
IL
V
DD
= 5 V −0.5 +0.3 V
DD
V
AD0 and AD1
Input Logic High V
IH
V
DD
= 3 V 2.1 V
Input Logic Low V
IL
V
DD
= 3 V 0.6 V
Input Current I
IL
V
IN
= 0 V or 5 V ±1 µA
Input Capacitance
7
C
IL
5 pF
POWER SUPPLIES
Power Supply Range V
DD_RANGE
2.7 5.5 V
OTP Supply Voltage
9, 10
V
DD_OTP
T
A
= 25°C 5.6 5.7 5.8 V
Supply Current I
DD
V
IH
= 5 V or V
IL
= 0 V 3.5 6 µA
OTP Supply Current
9, 11, 12
I
DD_OTP
V
DD_OTP
= 5.0 V, T
A
= 25°C 100 mA
Power Dissipation
13
P
DISS
V
IH
= 5 V or V
IL
= 0 V, V
DD
= 5 V 33 µW
Power Supply Sensitivity
PSS
V
DD
= 5 V ± 10%,
code = midscale
±0.02
±0.08
%/%
DYNAMIC CHARACTERISTICS
14
Bandwidth, −3 dB BW Code = 0x80 4.8 MHz
Total Harmonic Distortion THD
W
V
A
= 1 V rms, V
B
= 0 V,
f = 1 kHz
0.1 %