AD5246

Data Sheet

Rev. C | Page 4 of 16

ELECTRICAL CHARACTERISTICS—10 kΩ, 50 kΩ, 100 kΩ VERSIONS

Table 2.

Parameter

Symbol

Conditions

Min

Typ1

Max

Unit

DC CHARACTERISTICS, RHEOSTAT MODE

Resistor Differential Nonlinearity2

R-DNL

–1

±0.1

+1

LSB

Resistor Integral Nonlinearity2

R-INL

–2

±0.25

+2

LSB

Nominal Resistor Tolerance3

–20

+20

%

Resistance Temperature Coefficient

Wiper = no connect

45

ppm/°C

75

150

Ω

150

400

Ω

RESISTOR TERMINALS

Voltage Range4

GND

V

Capacitance5 B

f = 1 MHz, measured to GND, code = 0x40

45

pF

Capacitance5 W

f = 1 MHz, measured to GND, code = 0x40

60

pF

Common-Mode Leakage

1

nA

DIGITAL INPUTS AND OUTPUTS

Input Logic High

2.4

V

Input Logic Low

0.8

V

Input Logic High

2.1

V

Input Logic Low

0.6

V

Input Current

±1

µA

Input Capacitance5

5

pF

POWER SUPPLIES

Power Supply Range

2.7

5.5

V

Supply Current

3

7

µA

2.5

5.2

µA

0.9

2

µA

Power Dissipation6

40

µW

Power Supply Sensitivity

PSSR

±0.01

±0.02

%/%

DYNAMIC CHARACTERISTICS5, 7

Bandwidth –3 dB

BW

600/100/40

kHz

Total Harmonic Distortion

0.05

%

2

µs

Resistor Noise Voltage Density

9

nV/√Hz

1

2

Resistor position nonlinearity error R-INL is the deviation from an ideal value measured between the maximum resistance and the minimum resistance wiper

positions. R-DNL measures the relative step change from ideal between successive tap positions. Parts are guaranteed monotonic.

3

Code = 0x7F.

4

Resistor Terminal A and Resistor Terminal W have no limitations on polarity with respect to each other.

5

Guaranteed by design; not subject to production test.

6

7