AD9801

–11–

REV. 0

AVSS

6

7

4

3

2

U6

AD707

C50

0.1µF

C55

0.01µF

C56

0.1µF

C49

0.01µF

R14

68

Ω

C37

0.1µF

AVCC

CW

R6

10k

Ω

TP25

C70

10µF

16V

PGACONT1

AVCC

24

23

22

21

20

19

18

17

16

15

14

13

36 35 34 33 32

27 26 25

31 30 29 28

37

38

39

40

41

42

43

44

45

46

47

48

123456789

10 11 12

U1

AD9801

DRVSS

DVSS

CLPDM

SHD

SHP

CLPOB

PBLK

STBY

DVDD

ADCCLK

DVSS

DSUBST

VRT

VRB

SUBST

ADVSS

ADVDD

ADVDD

ADVSS

MODE1

MODE2

INT_BIAS2

CMLEVEL

ADVSS

C14

0.1µF

C28

0.01µF

VDD

C5

0.1µF

C6

0.1µF

C2

0.1µF

C1

1µF

C3

0.1µF

C4

0.1µF

VDD

C8

0.1µF

C23

0.1µF

PIN

C10

2µF

C9

2µF

C12

0.1µF

C7

0.1µF

C61

0.1µF

PGACONT1

PGACONT2

VDD

TP5

PBLK

CLPOB

STBY

SHP

SHD

CLPDM

ADCCLK

C13

0.1µF

C29

0.01µF

VDD

DIN

0.1µF

VDD

CW

1k

Ω

JP3

JP2

JP1

JP4

FB4

C11

0.1µF

C46

0.1µF

C47

22µF

FB1

TP28

C66

0.1µF

VDD

+3V

JP1

C45

0.1µF

C44

22µF

FB2

TP27

C67

0.1µF

+5V

JP2

AVCC

C40

0.1µF

C41

22µF

FB3

TP26

C68

0.1µF

AVSS

–5V

JP3

TP29

GND

JP5

AVCC

AVSS

6

7

4

3

2

U7

AD707

C51

0.1µF

C57

0.01µF

C52

0.1µF

C54

0.01µF

R15

68

Ω

C36

0.1µF

AVCC

CW

R7

10k

Ω

TP24

C71

10µF

16V

PGACONT2

2

4

6

8

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

1

3

5

7

9

11

13

15

17

19

21

23

25

27

29

31

33

35

37

39

40 PIN HEADER

D9 (MSB)

D8

D7

D6

D5

D4

D3

D2

D1

D0 (LSB)

ADCCLK

Figure 22. AD9801EB Schematic

EVALUATION BOARD

Figure 22 shows the schematic for the AD9801 evaluation

board. Notice the use of a common ground and supply for the

AD9801, and the extensive supply and reference decoupling.