AD5222 datasheet(4/10 Pages) AD

4 / 10 page

100

128

RWB

CODE – Decimal

RWA

Figure 3. Wiper-To-End Terminal Resistance vs. Code

IWA CURRENT – mA

3FH

RAB = 10k

VDD = 5V

TA = 25 C

456

0.5

1.5

2.5

3.5

4.5

08H

02H

05H

10H

20H

Figure 4. Resistance Linearity vs. Conduction Current

180

WIPER RESISTANCE –

47 48

50 51

53 54

56 57 59

120

150

SS = 600 UNITS

VDD = 2.7V

TA = 25 C

Figure 5. Wiper Contact Resistance

AD5222–Typical Performance Characteristics

–4–

REV. 0

CODE – Decimal

0.25

–0.25

128

112

0.20

0.05

–0.05

–0.15

–0.20

0.15

0.10

–0.10

TA = +25 C

TA = +85 C

TA = –55 C

VDD = +15V

VSS = –15V

RAB = 50k

Figure 6. R-DNL Relative Resistance Step Position

Change vs. Code

CODE – Decimal

1.0

–1.0

128

112

0.8

0.2

–0.2

–0.6

–0.8

0.6

0.4

–0.4

VDD/VSS = 2.7V/0V

TA = 25 C

50k

VERSION

100k

VERSION

10k

VERSION

Figure 7. R-INL Resistance Nonlinearity Error vs. Code

CODE – Decimal

–1.0

128

112

0.2

–0.2

–0.6

–0.8

0.6

0.4

–0.4

VDD/VSS = 2.7V/0V

TA = 25 C

50k

VERSION

100k

VERSION

10k

VERSION

Figure 8. Potentiometer Divider INL Error vs. Code

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