AD5251BRU10-RL7(Rev0) Просмотр технического описания (PDF) - Analog Devices

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Компоненты Описание

производитель

AD5251BRU10-RL7
(Rev.:Rev0)

Dual 64-and 256-Position I2C Nonvolatile Memory Digital Potentiometers

Analog Devices 

AD5251/AD5252

10 kΩ, 50 kΩ, 100 kΩ Versions. VDD = +3 V ± 10% or + 5 V ± 10%. VSS = 0 V or VDD/VSS = ± 2.5 V ± 10%. VA = +VDD, VB = 0 V,

–40°C < TA < +85°C, unless otherwise noted.

Table 2.

Parameter

Symbol

Conditions

Min Typ1

Max Unit

DC CHARACTERISTICS

RHEOSTAT MODE

Resolution

N

AD5251/AD5252

6/8

Bits

Resistor Differential NL2

R-DNL

RWB, RWA = NC, AD5251

−0.75 ±0.1

+0.75 LSB

Resistor Nonlinearity2

R-INL

RWB, RWA = NC, AD5252

RWB, RWA = NC, AD5251

−1

±0.25

−0.75 ±0.25

+1

LSB

+0.75 LSB

RWB, RWA = NC, AD5252

−2.5 ±1

+2.5 LSB

Nominal Resistor Tolerance

Resistance Temperature

Coefficent

∆RAB/RAB

TA = 25°C

(∆RAB/RAB) × 106/∆T

−20

650

+20 %

ppm/°C

Wiper Resistance

RW

IW = 1 V/R, VDD = 5 V

75

130 Ω

IW = 1 V/R, VDD = 3 V

200

300 Ω

Channel Resistance Matching ∆RAB1/∆RAB2

RAB = 10 kΩ, 50 kΩ

0.15

%

RAB = 100 kΩ

0.05

%

DC CHARACTERISTICS

POTENTIOMETER DIVIDER

MODE

Differential Nonlinearity3

Integral Nonlinearity

3

Voltage Divider

Temperature Coefficent

Full-Scale Error

Zero-Scale Error

RESISTOR TERMINALS

Voltage Range4

Capacitance5 Ax, Bx

Capacitance5 Wx

Common-Mode Leakage

Current

DIGITAL INPUTS and OUTPUTS

Input Logic High

Input Logic Low

Output Logic High (SDA)

Output Logic Low (SDA)

Leakage Current

A0 Leakage Current

Input Leakage Current

(Other than WP and A0)

Input Capacitance5

POWER SUPPLIES

Single-Supply Power Range

DNL

AD5251

−0.5

AD5252

−1

INL

AD5251

−0.5

AD5252

−1.5

(∆VW/VW) × 106/∆T Code = half scale

VWFSE

Code = full scale, AD5251

−1

Code = full scale, AD5252

−3

VWZSE

Code = zero scale, AD5251

0

Code = zero scale, AD5252

0

VA, VB, VW

VSS

CA, CB

f = 1 kHz, measured to GND,

Code = half scale

CW

f = 1 kHz, measured to GND,

Code = half scale

ICM

VA = VB = VDD/2

VIH

VDD =5 V, VSS = 0 V

2.4

VDD/VSS = +2.7 V/0 V or VDD/VSS = ±2.5 V 2.1

VIL

VDD = 5 V, VSS = 0 V

VDD/VSS = +2.7 V/0 V or VDD/VSS =±2.5 V

VOH

RPULL-UP = 2.2 kΩ to VDD = 5 V, VSS = 0 V

4.9

VOL

RPULL-UP = 2.2 kΩ to VDD = 5 V, VSS = 0 V

IWP

WP = VDD

IA0

A0 = GND

II

VIN = 0 V or VDD

CI

VDD

VSS = 0 V

2.7

±0.1

±0.3

±0.15

±0.5

15

−0.3

−1

0.3

1.2

85

95

0.01

5

+0.5 LSB

+1

LSB

+0.5 LSB

+1.5 LSB

ppm/°C

0

LSB

0

LSB

1

LSB

3

LSB

VDD

V

pF

pF

1

µA

V

V

0.8

V

0.6

V

V

0.4

V

5

µA

3

µA

±1

µA

pF

5.5

V

Rev. 0 | Page 5 of 28

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