Data Sheet
AD5172/AD5173
Rev. I | Page 5 of 28
Parameter
Symbol
Conditions
Min
Max
Unit
VW Settling Time
tS
VA = 5 V, VB = 0 V, ±1 LSB
error band
1
s
Resistor Noise Voltage Density
eN_WB
RWB = 1.25 k, RS = 0
3.2
nV/√Hz
1
Typical specifications represent average readings at 25°C and VDD = 5 V.
2
Resistor position nonlinearity error, R-INL, is the deviation from an ideal value measured between the maximum resistance and the minimum resistance wiper
positions. R-DNL measures the relative step change from the ideal between successive tap positions. Parts are guaranteed monotonic.
3
VA = VDD, VB = 0 V, wiper (VW) = no connect.
4
Specifications apply to all VRs.
5
INL and DNL are measured at VW with the RDAC configured as a potentiometer divider similar to a voltage output DAC. VA = VDD and VB = 0 V. DNL specification limits
of ±1 LSB maximum are guaranteed monotonic operating conditions.
6
Resistor Terminal A, Resistor Terminal B, and Resistor Terminal W have no limitations on polarity with respect to each other.
7
Guaranteed by design, but not subject to production test.
8
Measured at Terminal A. Terminal A is open circuited in shutdown mode.
9
The minimum voltage requirement on the VIH is 0.7 V × VDD. For example, VIH minimum = 3.5 V when VDD = 5 V. It is typical for the SCL and SDA resistors to be pulled up to VDD.
However, care must be taken to ensure that the minimum VIH is met when the SCL and SDA are driven directly from a low voltage logic controller without pull-up resistors.
10
Different from the operating power supply; the power supply for OTP is used one time only.
11
Different from the operating current; the supply current for OTP lasts approximately 400 ms for one time only.
12
13
PDISS is calculated from (IDD × VDD). CMOS logic level inputs result in minimum power dissipation.
14
All dynamic characteristics use VDD = 5 V.
ELECTRICAL CHARACTERISTICS: 10 k, 50 k, AND 100 k
VDD = 5 V ± 10% or 3 V ± 10%; VA = VDD; VB = 0 V; 40°C < TA < +125°C; unless otherwise noted.
Table 2.
Parameter
Symbol
Conditions
Min
Max
Unit
DC CHARACTERISTICS—RHEOSTAT MODE
Resistor Differential Nonlinearit
y2R-DNL
RWB, VA = no connect
1
±0.1
+1
LSB
Resistor Integral Nonlineari
ty2R-INL
RWB, VA = no connect
2.5
±0.25
+2.5
LSB
Nominal Resistor Tolerance
3ΔRAB
TA = 25°C
20
+20
%
Resistance Temperature Coefficient
(ΔRAB/RAB)/ΔT
35
ppm/°C
Wiper Resistance
RWB
Code = 0x00, VDD = 5 V
160
200
DC CHARACTERISTICS—POTENTIOMETER DIVIDER
Differential Nonlinearit
y5DNL
1
±0.1
+1
LSB
INL
1
±0.3
+1
LSB
Voltage Divider Temperature Coefficient
(ΔVW/VW)/ΔT
Code = 0x80
15
ppm/°C
Full-Scale Error
VWFSE
Code = 0xFF
2.5
1
0
LSB
Zero-Scale Error
VWZSE
Code = 0x00
0
1
2.5
LSB
RESISTOR TERMINALS
VA, VB, VW
GND
VDD
V
CA, CB
f = 1 MHz, measured to
GND, code = 0x80
45
pF
CW
f = 1 MHz, measured to
GND, code = 0x80
60
pF
IA_SD
VDD = 5.5 V
0.01
1
A
Common-Mode Leakage
ICM
VA = VB = VDD/2
1
nA
DIGITAL INPUTS AND OUTPUTS
SDA and SCL
VIH
VDD = 5 V
0.7 VDD
VDD + 0.5
V
VIL
VDD = 5 V
0.5
+0.3 VDD
V
AD0 and AD1
Input Logic High
VIH
VDD = 3 V
2.1
V
Input Logic Low
VIL
VDD = 3 V
0.6
V
Input Current
IIL
VIN = 0 V or 5 V
±1
A
CIL
5
pF