AD5122BRUZ10(Rev0) 查看數據表（PDF） - Analog Devices

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AD5122BRUZ10
(Rev.:Rev0)

Dual Channel, 128-/256-Position, SPI, Nonvolatile Digital Potentiometer

Analog Devices 

Data Sheet

AD5122/AD5142

SPECIFICATIONS

ELECTRICAL CHARACTERISTICS—AD5122

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 2.

Parameter

DC CHARACTERISTICS—RHEOSTAT

MODE (ALL RDACs)

Resolution

Resistor Integral Nonlinearity2

Resistor Differential Nonlinearity2

Nominal Resistor Tolerance

Resistance Temperature Coefficient3

Wiper Resistance3

Bottom Scale or Top Scale

Nominal Resistance Match

DC CHARACTERISTICS—POTENTIOMETER

DIVIDER MODE (ALL RDACs)

Integral Nonlinearity4

Differential Nonlinearity4

Full-Scale Error

Zero-Scale Error

Voltage Divider Temperature

Coefficient3

Symbol

Test Conditions/Comments

N

R-INL

R-DNL

ΔRAB/RAB

(ΔRAB/RAB)/ΔT × 106

RW

RBS or RTS

RAB1/RAB2

RAB = 10 kΩ

VDD ≥ 2.7 V

VDD < 2.7 V

RAB = 100 kΩ

VDD ≥ 2.7 V

VDD < 2.7 V

Code = full scale

Code = zero scale

RAB = 10 kΩ

RAB = 100 kΩ

RAB = 10 kΩ

RAB = 100 kΩ

Code = 0xFF

INL

DNL

VWFSE

VWZSE

(ΔVW/VW)/ΔT × 106

RAB = 10 kΩ

RAB = 100 kΩ

RAB = 10 kΩ

RAB = 100 kΩ

RAB = 10 kΩ

RAB = 100 kΩ

Code = half scale

Min

7

−1

−2.5

−0.5

−1

−0.5

−8

−1

−0.5

−0.25

−0.25

−1.5

−0.5

Typ1 Max

±0.1 +1

±1 +2.5

±0.1 +0.5

±0.25 +1

±0.1 +0.5

±1 +8

35

55 125

130 400

40 80

60 230

±0.2 +1

±0.1 +0.5

±0.1 +0.25

±0.1 +0.25

−0.1

±0.1 +0.5

1

1.5

0.25 0.5

±5

Unit

Bits

LSB

LSB

LSB

LSB

LSB

%

ppm/°C

Ω

Ω

Ω

Ω

%

LSB

LSB

LSB

LSB

LSB

LSB

LSB

ppm/°C

Rev. 0 | Page 3 of 32

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