AD8284

Data Sheet

Rev. D | Page 24 of 28

APPLICATION CIRCUITS

Figure 23. Differential Inputs

3.3V

DVDD33SPI

0.1µF

DVDD33CLK

0.1µF

DVDD33DRV

0.1µF

DVDD33DRV

0.1µF

1.8V

AVDD18

0.1µF

AVDD18

0.1µF

AVDD18ADC

0.1µF

3.3V

AVDD33REF

0.1µF

AVDD33

0.1µF

AVDD33

0.1µF

1.8V

DVDD18

0.1µF

DVDD18CLK

0.1µF

INA+

0.1µF

INA–

0.1µF

INB+

0.1µF

INB–

0.1µF

IND+

0.1µF

IND–

0.1µF

INC–

0.1µF

INC+

0.1µF

PDWN

SCLK

AUX

SDO

SDI

MUX[1]

MUX[0]

CS

ZSEL

CLK+

CLK–

0.1µF

1µF

10kΩ

1%

NC

NC

NC

NC

NC

AD8284

TOP VIEW

(Not to Scale)

NC

NC

SFLAG

PDWN

DVDD18

SCLK

SDI

SDO

CS

AUX

MUX[0]

MUX[1]

ZSEL

TEST1

TEST2

DVDD33SPI

NC

NC

NC

AGND

AVDD18ADC

TEST3

ANOUT

APOUT

RBIAS

VREF

BAND

AVDD33REF

DVDD33CLK

CLK–

CLK+

DVDD18CLK

TEST4

NC

NOTES

1. ALL CAPACITORS FOR SUPPLIES AND REFERENCES SHOULD BE PLACED CLOSE TO THE PART.

2. TIE THE EXPOSED PAD ON THE BOTTOM SIDE TO THE ANALOG GROUND PLANE.

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

NC

NC

NC

NC

D0

D11

SFLAG

INADC–

AVDD18

INADC+

AVDD18