AD5247 Просмотр технического описания (PDF) - Analog Devices

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AD5247

128-Position I2C-Compatible Digital Potentiometer

Analog Devices 

Data Sheet

0.30

A-VDD = 5.5V

CODE = 0x55

0.25

B-VDD = 5.5V

CODE = 0x7F

0.20 C-VDD = 2.7V

CODE = 0x55

0.15 D-VDD = 2.7V

CODE = 0x7F

TA = 25°C

0.10

0.05

0

1k

A

B

10k

100k

FREQUENCY (Hz)

Figure 22. IDD vs. Frequency

C

D

1M

150

TA = 25°C

RAB = 50kΩ

125

100

VDD = 2.7V

75

50

25

VDD = 5.5V

0

0

16

32

48

64

80

96 112 128

CODE (Decimal)

Figure 23. Wiper Resistance vs. Code vs. VDD

VDD = 5.5V

VA = 5.0V

VB = 0V

TA = 25°C

RAB = 10kΩ

FCLK = 100kHz

VW

5V

CLK

0V

1µs/DIV

Figure 24. Digital Feedthrough

VDD = 5.5V

VA = 5.0V

VB = 0V

CODE 0x40 TO CODE 0x3F

AD5247

TA = 25°C

RAB = 10kΩ

VW

200ns/DIV

Figure 25. Midscale Glitch, Code 0x40 to Code 0x3F

VDD = 5.5V

VA = 5.0V

VB = 0V

CODE 0x00 TO CODE 0x7F

TA = 25°C

RAB = 10kΩ

VW

4µs/DIV

Figure 26. Large Signal Settling Time

Rev. F | Page 11 of 20

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