AD5251BRUZ100

更新时间： 2024-01-11 06:30:32

品牌	Logo	应用领域
亚德诺 - ADI		电位器存储
页数	文件大小	规格书
28页	575K
描述
Dual 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers

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AD5251BRUZ100 数据手册

Data Sheet

AD5251/AD5252

ELECTRICAL CHARACTERISTICS

1 kΩ VERSION

V_DD= 3 V 10% or 5 V 10%, V_SS= 0 V or V_DD/V_SS

2.5 V 10%, V_A= V_DD, V_B= 0 V, –40°C < T_A< +105°C, unless otherwise noted.

Table 1.

Parameter

Symbol

Conditions

Min

Typ ¹

Max

Unit

DC CHARACTERISTICS—

RHEOSTAT MODE

Resolution

AD5251

AD5252

Bits

LSB

Resistor Differential Nonlinearity²

R-DNL

R_WB, R_WA= NC, V_DD= 5.5 V, AD5251

R_WB, R_WA= NC, V_DD= 5.5 V, AD5252

R_WB, R_WA= NC, V_DD= 2.7 V, AD5251

R_WB, R_WA= NC, V_DD= 2.7 V, AD5252

R_WB, R_WA= NC, V_DD= 5.5 V, AD5251

R_WB, R_WA= NC, V_DD= 5.5 V, AD5252

R_WB, R_WA= NC, V_DD= 2.7 V, AD5251

R_WB, R_WA= NC, V_DD= 2.7 V, AD5252

T_A= 25°C

–0.5

–1.00

–0.75

–1.5

–0.5

–2.0

–1.0

–2

0.2

0.25

0.30

0.3

0.2

0.5

+0.5

+1.00

+0.75

+1.5

+0.5

+2.0

+4.0

+14

+30

Resistor Nonlinearity²

R-INL

+2.5

Nominal Resistor Tolerance

Resistance Temperature Coefficient (ΔR_AB/R_AB) × 10⁶/ΔT

Wiper Resistance

ΔR_AB/R_AB

–30

650

200

0.15

ppm/°C

Ω

R_W

I_W= 1 V/R, V_DD= 5 V

I_W= 1 V/R, V_DD= 3 V

130

300

Channel-Resistance Matching

ΔR_AB1/ΔR_AB3

DC CHARACTERISTICS—

POTENTIOMETER DIVIDER MODE

Differential Nonlinearity³

DNL

INL

AD5251

AD5252

AD5251

AD5252

–0.5

–1.00

–0.5

–2.0

0.1

0.25

0.2

0.5

–3

–11

–4

–16

+0.5

+1.00

+0.5

+2.0

LSB

ppm/°C

LSB

Integral Nonlinearity³

Voltage Divider Tempco

Full-Scale Error

(ΔV_W/V_W) × 10⁶/ΔT

V_WFSE

Code = half scale

Code = full scale, V_DD= 5.5 V, AD5251

Code = full scale, V_DD= 5.5 V, AD5252

Code = full scale, V_DD= 2.7 V, AD5251

Code = full scale, V_DD= 2.7 V, AD5252

Code = zero scale, V_DD= 5.5 V, AD5251

Code = zero scale, V_DD= 5.5 V, AD5252

Code = zero scale, V_DD= 2.7 V, AD5251

Code = zero scale, V_DD= 2.7 V, AD5252

–5

–16

−6

–23

Zero-Scale Error

V_WZSE

RESISTOR TERMINALS

Voltage Range⁴

V_A, V_B, V_W

C_A, C_B

V_SS

V_DD

Capacitance⁵A, B

f = 1 kHz, measured to GND,

code = half scale

f = 1 kHz, measured to GND,

code = half scale

Capacitance⁵W

C_W

I_CM

µA

Common-Mode Leakage Current

V_A= V_B= V_DD/2

0.01

Rev. D | Page 3 of 28

1 234 5 6 7...28

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