AD5255_15 datasheet(3/20 Pages) AD

Il numero della parte	AD5255

Spiegazioni elettronici	3-Channel Digital Potentiometer with Nonvolatile Memory

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Produttore elettronici	AD [Analog Devices]

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AD5255

Rev. A | Page 3 of 20

ELECTRICAL CHARACTERISTICS

Single supply: VDD = 2.7 V to 5.5 V and −40°C < TA < +85°C, unless otherwise noted.

Dual supply: VDD = +2.25 V or +2.75 V, VSS = −2.25 V or −2.75 V, and −40°C < TA < +85°C, unless otherwise noted.

Table 1.

Parameter

Symbol

Conditions

Min

Typ1

Max

Unit

DC CHARACTERISTICS,

RHEOSTAT MODE

Resistor Differential Nonlinearity2

R-DNL

RWB, 7-bit channels

−0.7

5

+0.7

5

LSB

RWB, 9-bit channels

−2.5

+2.5

LSB

Resistor Integral Nonlinearity2

R-INL

RWB, 7-bit channels

−0.5

+0.5

LSB

R-INL

RWB, 9-bit channels, VDD = 5.5 V

−2.0

+2.0

LSB

R-INL

RWB, 9-bit channels, VDD = 2.7 V

−4.0

+4.0

LSB

Resistance Temperature Coefficent

(∆RWB/RWB)/∆T × 107

35

ppm/°C

Wiper Resistance

RW

VDD = 5 V, IW = 1 V/RWB

100

150

Ω

VDD = 3 V, IW = 1 V/RWB

250

400

Ω

Channel Resistance Matching

∆RAB1/∆RAB2

Ch 1 and 2 RWB, Dx = 0x1FF

0.1

%

Nominal Resistor Tolerance

∆RAB/RAB

Dx = 0x3FF

−15

+15

%

DC CHARACTERISTICS,

POTENTIOMETER DIVIDER MODE

Differential Nonlinearity3

DNL

7-bit channels

−0.5

+0.5

LSB

DNL

9-bit channels

−2.0

+2.0

LSB

Integral Nonlinearity3

INL

7-bit channels

−0.5

+0.5

LSB

INL

9-bit channels

−2.0

+2.0

LSB

Voltage Divider Temperature Coefficent

(∆VW/VW)/∆T × 107

Code = half scale

15

ppm/°C

Full-Scale Error

VWFSE

7-bit channels/9-bit channels,

code = full scale

−1/−2.75

0/0

LSB

Zero-Scale Error

VWZSE

7-bit channels/9-bit channels,

code = zero scale

0/0

1/2.0

LSB

RESISTOR TERMINALS

Terminal Voltage Range4

VA, VB, VW

VSS

VDD

V

Capacitance5 Ax, Bx

CA,B

f = 1 kHz, measured to GND,

code = half scale

85

pF

Capacitance5 Wx

CW

f = 1 kHz, measured to GND,

code = half scale

95

pF

Common-Mode Leakage Current 5, 6

ICM

VW = VDD/2

0.01

1

μA

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