REV. 0

AD9203

REV. 0

–5–

PIN FUNCTION DESCRIPTIONS

Pin

Name

Description

1

DRVSS

Digital Ground

2

DRVDD

Digital Supply

3

D0

Bit 0, Least Significant Bit

4

D1

Bit 1

5

D2

Bit 2

6

D3

Bit 3

7

D4

Bit 4

8

D5

Bit 5

9

D6

Bit 6

10

D7

Bit 7

11

D8

Bit 8

12

D9

Bit 9, Most Significant Bit

13

OTR

Out-of-Range Indicator

14

DFS

Data Format Select. (HI: Twos Complement. LO: Straight Binary)

15

CLK

Clock Input

16

3-STATE

HI: High Impedance State Output. LO: Active Digital Output Drives

17

STBY

HI: Power-Down Mode. LO: Normal Operation

18

REFSENSE

Reference Select

19

CLAMP

HI: Enable Clamp. LO: Open Clamp

20

CLAMPIN

Clamp Signal Input

21

PWRCON

Power Control Input

22

REFTF

Top Reference Decoupling

23

VREF

Reference In/Out

24

REFBF

Bottom Reference Decoupling

25

AINP

Noninverting Analog Input

26

AINN

Inverting Analog Input

27

AVSS

Analog Ground

28

AVDD

Analog Supply

PIN CONFIGURATION

TOP VIEW

(Not to Scale)

AD9203

DFS

OTR

(MSB) D9

D8

D7

D6

D5

DRVSS

DRVDD

(LSB) D0

D1

D4

D3

D2

CLK

3-STATE

STBY

REFSENSE

CLAMP

CLAMPIN

PWRCON

AVDD

AVSS

AINN

AINP

REFTF

VREF

REFBF

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28