AD5241(RevB) 查看數據表（PDF） - Analog Devices

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AD5241
(Rev.:RevB)

I2C® Compatible 256-Position Digital Potentiometers

Analog Devices 

AD5241/AD5242

0.1

0.01

RAB = 10k⍀

VDD = 5.5V

0.001

–40

–20

0

20

40

60

80

TEMPERATURE – ؇C

TPC 7. Shutdown Current vs. Temperature

70

60

10M⍀ VERSION

50

10k⍀ VERSION

40

100k⍀ VERSION

30

VDD/VSS = 2.7V/0V

TA = 25؇C

20

10

0

–10

–20

–30

0

32

64

96 128 160 192 224 256

CODE – Decimal

TPC 8. ⌬VWB/⌬T Potentiometer Mode Tempco

120

100

100k⍀ VERSION

80

VDD/VSS = 2.7V/0V

TA = 25؇C

60

40

20

0

–20

10k⍀ VERSION

–40

10M⍀ VERSION

–60

–80

0

32

64

96 128 160 192 224 256

CODE – Decimal

TPC 9. ⌬RWB/⌬T Rheostat Mode Tempco

100

TA = 25؇C

90

80

70

60

50

40

30

20

10

–3 –2 –1

VDD/VSS = +2.7V/0V

VDD/VSS = ؎2.7V/0V

VDD/VSS = +5.5V/0V

0

1

2

3

4

5

6

COMMON MODE – V

TPC 10. Incremental Wiper Contact vs. VDD/VSS

300

A – VDD/VSS = 5.5V/0V

250 CODE = FF

B – VDD/VSS = 3.3V/0V

CODE = FF

200

C – VDD/VSS = 2.5V/0V

CODE = FF

150

D – VDD/VSS = 5.5V/0V

CODE = 55

100

E – VDD/VSS = 3.3V/0V

CODE = 55

F – VDD/VSS = 2.5V/0V

50 CODE = 55

0

10

100

FREQUENCY – kHz

TPC 11. Supply Current vs. Frequency

D

A

E

B

F

C

1000

6

0

–6

–12

–18

–24

–30

–36

–42

–48

–54

100

FFH

80H

40H

20H

10H

08H

04H

02H

01H

1k

10k

100k

1M

FREQUENCY – Hz

TPC 12. AD5242 10 kΩ Gain vs. Frequency vs. Code

–8–

REV. B

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