AD5123 datasheet(3/28 Pages) AD

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Data Sheet

AD5123/AD5143

Rev. B | Page 3 of 28

SPECIFICATIONS

ELECTRICAL CHARACTERISTICS—AD5123

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; −40°C < TA < +125°C, unless otherwise noted.

Table 2.

Parameter

Symbol

Test Conditions/Comments

Min

Typ1

Max

Unit

DC CHARACTERISTICS—RHEOSTAT

MODE (ALL RDACs)

Resolution

Bits

Resistor Integral Nonlinearity2

R-INL

RAB = 10 kΩ

VDD ≥ 2.7 V

−1

±0.1

LSB

VDD < 2.7 V

−2.5

±1

+2.5

LSB

RAB = 100 kΩ

VDD ≥ 2.7 V

−0.5

±0.1

+0.5

LSB

VDD < 2.7 V

−1

±0.25

LSB

Resistor Differential Nonlinearity2

R-DNL

−0.5

±0.1

+0.5

LSB

Nominal Resistor Tolerance

ΔRAB/RAB

−8

±1

Resistance Temperature Coefficient3

(ΔRAB/RAB)/ΔT × 106

Code = full scale

ppm/°C

Wiper Resistance3

Code = zero scale

RAB = 10 kΩ

125

Ω

RAB = 100 kΩ

130

400

Ω

Bottom Scale or Top Scale

RBS or RTS

RAB = 10 kΩ

Ω

RAB = 100 kΩ

230

Ω

Nominal Resistance Match

RAB1/RAB2

Code = 0xFF

−1

±0.2

DC CHARACTERISTICS—POTENTIOMETER

DIVIDER MODE (ALL RDACs)

Integral Nonlinearity4

INL

RAB = 10 kΩ

−0.5

±0.1

+0.5

LSB

RAB = 100 kΩ

−0.25

±0.1

+0.25

LSB

Differential Nonlinearity4

DNL

−0.25

±0.1

+0.25

LSB

Full-Scale Error

VWFSE

RAB = 10 kΩ

−1.5

−0.1

LSB

RAB = 100 kΩ

−0.5

±0.1

+0.5

LSB

Zero-Scale Error

VWZSE

RAB = 10 kΩ

1.5

LSB

RAB = 100 kΩ

0.25

0.5

LSB

Voltage Divider Temperature

Coefficient3

(ΔVW/VW)/ΔT × 106

Code = half scale

±5

ppm/°C

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