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AD5122 Datasheet(PDF) 6 Page - Analog Devices

Part No. AD5122
Description  Dual Channel, 128-/256-Position, SPI, Nonvolatile Digital Potentiometer
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD5122 Datasheet(HTML) 6 Page - Analog Devices

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AD5122/AD5142
Data Sheet
Rev. C | Page 6 of 32
ELECTRICAL CHARACTERISTICS—AD5142
VDD = 2.3 V to 5.5 V, VSS = 0 V; VDD = 2.25 V to 2.75 V, VSS = −2.25 V to −2.75 V; VLOGIC = 1.8 V to 5.5 V, −40°C < TA < +125°C, unless
otherwise noted.
Table 3.
Parameter
Symbol
Test Conditions/Comments
Min
Typ1
Max
Unit
DC CHARACTERISTICS—RHEOSTAT
MODE (ALL RDACs)
Resolution
N
8
Bits
Resistor Integral Nonlinearity2
R-INL
R
AB = 10 kΩ
V
DD ≥ 2.7 V
−2
±0.2
+2
LSB
V
DD < 2.7 V
−5
±1.5
+5
LSB
R
AB = 100 kΩ
V
DD ≥ 2.7 V
−1
±0.1
+1
LSB
V
DD < 2.7 V
−2
±0.5
+2
LSB
Resistor Differential Nonlinearity2
R-DNL
−0.5
±0.2
+0.5
LSB
Nominal Resistor Tolerance
ΔR
AB/RAB
−8
±1
+8
%
Resistance Temperature Coefficient3
(ΔR
AB/RAB)/ΔT × 10
6
Code = full scale
35
ppm/°C
Wiper Resistance3
R
W
Code = zero scale
R
AB = 10 kΩ
55
125
R
AB = 100 kΩ
130
400
Bottom Scale or Top Scale
R
BS or RTS
R
AB = 10 kΩ
40
80
R
AB = 100 kΩ
60
230
Nominal Resistance Match
R
AB1/RAB2
Code = 0xFF
−1
±0.2
+1
%
DC CHARACTERISTICS—POTENTIOMETER
DIVIDER MODE (ALL RDACs)
Integral Nonlinearity4
INL
R
AB = 10 kΩ
−1
±0.2
+1
LSB
R
AB = 100 kΩ
−0.5
±0.1
+0.5
LSB
Differential Nonlinearity4
DNL
−0.5
±0.2
+0.5
LSB
Full-Scale Error
V
WFSE
R
AB = 10 kΩ
−2.5
−0.1
LSB
R
AB = 100 kΩ
−1
±0.2
+1
LSB
Zero-Scale Error
V
WZSE
R
AB = 10 kΩ
1.2
3
LSB
R
AB = 100 kΩ
0.5
1
LSB
Voltage Divider Temperature
Coefficient3
(ΔV
W/VW)/ΔT × 10
6
Code = half scale
±5
ppm/°C


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