AD5243/AD5248
Data Sheet
ELECTRICAL CHARACTERISTICS: 10 kΩ, 50 kΩ, AND 100 kΩ VERSIONS
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
Typ1
Max
Unit
DC CHARACTERISTICS—RHEOSTAT MODE
Resistor Differential Nonlinearity2
Resistor Integral Nonlinearity2
Nominal Resistor Tolerance3
Resistance Temperature Coefficient
Wiper Resistance
R-DNL
R-INL
∆RAB
(∆RAB/RAB )/∆T
RWB
RWB, VA = no connect
RWB, VA = no connect
TA = 25°C
VAB = VDD, wiper = no connect
Code = 0x00, VDD = 5 V
−1
−2.5
−20
0.1
0.25
+1
+2.5
+20
LSB
LSB
%
ppm/°C
Ω
35
160
200
DC CHARACTERISTICS—POTENTIOMETER
DIVIDER MODE4
Differential Nonlinearity5
Integral Nonlinearity5
Voltage Divider Temperature Coefficient
Full-Scale Error
DNL
INL
(∆VW/VW)/∆T
VWFSE
VWZSE
−1
−1
0.1
0.3
15
−1
1
+1
+1
LSB
LSB
ppm/°C
LSB
LSB
Code = 0x80
Code = 0xFF
Code = 0x00
−2.5
0
0
2.5
Zero-Scale Error
RESISTOR TERMINALS
Voltage Range6
VA, VB, VW
CA, CB
GND
VDD
V
pF
Capacitance A, B7
f = 1 MHz, measured to GND,
code = 0x80
f = 1 MHz, measured to GND,
code = 0x80
45
60
Capacitance W7
CW
pF
Shutdown Supply Current8
Common-Mode Leakage
DIGITAL INPUTS AND OUTPUTS
Input Logic High
Input Logic Low
Input Logic High
Input Logic Low
Input Current
Input Capacitance
IA_SD
ICM
VDD = 5.5 V
VA = VB = VDD/2
0.01
1
1
µA
nA
VIH
VIL
VIH
VIL
IIL
VDD = 5 V
VDD = 5 V
VDD = 3 V
VDD = 3 V
2.4
2.1
V
V
V
V
µA
pF
0.8
0.6
1
VIN = 0 V or 5 V
CIL
5
POWER SUPPLIES
Power Supply Range
Supply Current
Power Dissipation
Power Supply Sensitivity
DYNAMIC CHARACTERISTICS
Bandwidth, −3 dB
VDD RANGE
IDD
PDISS
2.7
5.5
6
30
V
µA
µW
VIH = 5 V or VIL = 0 V
VIH = 5 V or VIL = 0 V, VDD = 5 V
VDD = 5 V 10%, code = midscale
3.5
PSS
0.02
0.08 %/%
BW
THDW
RAB = 10 kΩ/50 kΩ/100 kΩ, code = 0x80
VA = 1 V rms, VB = 0 V, f = 1 kHz,
RAB = 10 kΩ
600/100/40
0.1
kHz
%
Total Harmonic Distortion
VW Settling Time
Resistor Noise Voltage Density
tS
eN_WB
VA = 5 V, VB = 0 V, 1 LSB error band
RWB = 5 kΩ, RS = 0
2
9
µs
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 the A terminal. The A terminal is open circuited in shutdown mode.
Rev. B | Page 4 of 20
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