Data Sheet

AD5172/AD5173

SPECIFICATIONS

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Rev. J | 3 of 22

ELECTRICAL CHARACTERISTICS: 2.5 KΩ

VDD = 5 V ± 10%, or 3 V ± 10%; VA = VDD; VB = 0 V; −40°C < TA < +125°C; unless otherwise noted.

Table 1.

Parameter

Symbol

Conditions

Min

Typ1

Max

Unit

DC CHARACTERISTICS—RHEOSTAT MODE

Resistor Differential Nonlinearity2

R-DNL

RWB, VA = no connect

−2

±0.1

+2

LSB

Resistor Integral Nonlinearity2

R-INL

RWB, VA = no connect

−14

±2

+14

LSB

Nominal Resistor Tolerance3

∆RAB

TA = 25°C

−20

+55

%

Resistance Temperature Coefficient

(∆RAB/RAB)/∆T

35

ppm/°C

Wiper Resistance

RWB

Code = 0x00, VDD = 5 V

160

200

Ω

DC CHARACTERISTICS—POTENTIOMETER DIVIDER

MODE4

Differential Nonlinearity5

DNL

−1.5

±0.1

+1.5

LSB

Integral Nonlinearity5

INL

−2

±0.6

+2

LSB

Voltage Divider Temperature Coefficient

(ΔVW/VW)/ΔT

Code = 0x80

15

ppm/°C

Full-Scale Error

VWFSE

Code = 0xFF

−14

−5.5

0

LSB

Zero-Scale Error

VWZSE

Code = 0x00

0

4.5

12

LSB

RESISTOR TERMINALS

Voltage Range6

VA, VB, VW

GND

VDD

V

Capacitance A, B7

CA, CB

f = 1 MHz, measured to GND,

code = 0x80

45

pF

Capacitance W7

CW

f = 1 MHz, measured to GND,

code = 0x80

60

pF

Shutdown Supply Current8

IA_SD

VDD = 5.5 V

0.01

1

µA

Common-Mode Leakage

ICM

VA = VB = VDD/2

1

nA

DIGITAL INPUTS AND OUTPUTS

SDA and SCL

Input Logic High9

VIH

VDD = 5 V

0.7 VDD

VDD + 0.5

V

Input Logic Low9

VIL

VDD = 5 V

−0.5

+0.3 VDD

V

AD0 and AD1

Input Logic High

VIH

VDD = 3 V

2.1

V

Input Logic Low

VIL

VDD = 3 V

0.6

V

Input Current

IIL

VIN = 0 V or 5 V

±1

µA

Input Capacitance7

CIL

5

pF

POWER SUPPLIES

Power Supply Range

VDD

2.7

5.5

V

OTP Supply Voltage9, 10

VDD_OTP

TA = 25°C

5.6

5.7

5.8

V

Supply Current

IDD

VIH = 5 V or VIL = 0 V

3.5

6

µA

OTP Supply Current9, 11, 12

IDD_OTP

VDD_OTP = 5.7 V, TA = 25°C

100

mA

Power Dissipation13

PDISS

VIH = 5 V or VIL = 0 V, VDD = 5 V

33

µW

Power Supply Sensitivity

PSS

VDD = 5 V ± 10%, code = midscale

±0.02

±0.08

%/%

DYNAMIC CHARACTERISTICS14

Bandwidth, −3 dB

BW

Code = 0x80

4.8

MHz

Total Harmonic Distortion

THDW

VA = 1 V rms, VB = 0 V, f = 1 kHz

0.1

%

VW Settling Time

tS

VA = 5 V, VB = 0 V, ±1 LSB error

band

1

µs

Resistor Noise Voltage Density

eN_WB

RWB = 1.25 kΩ, RS = 0 Ω

3.2

nV/√Hz

1 Typical specifications represent average readings at 25°C and VDD = 5 V.