AD9760

–5–

REV. B

PIN CONFIGURATION

14

13

12

11

17

16

15

20

19

18

10

9

8

1

2

3

4

7

6

5

28

27

26

25

24

23

22

21

NC = NO CONNECT

(MSB) DB9

DB8

DB7

DB6

DB5

DB4

DB3

DB2

DB1

DB0

NC

NC

NC

NC

CLOCK

DVDD

DCOM

NC

AVDD

COMP2

ACOM

COMP1

FS ADJ

REFIO

REFLO

SLEEP

TOP VIEW

(Not to Scale)

AD9760

PIN FUNCTION DESCRIPTIONS

Pin No.

Name

Description

1

DB9

Most Significant Data Bit (MSB).

2–9

DB8–DB1

Data Bits 1–8.

10

DB0

Least Significant Data Bit (LSB).

11–14, 25 NC

No Internal Connection.

15

SLEEP

Power-Down Control Input. Active High. Contains active pull-down circuit, thus may be left unterminated if

not used.

16

REFLO

Reference Ground when Internal 1.2 V Reference Used. Connect to AVDD to disable internal reference.

17

REFIO

Reference Input/Output. Serves as reference input when internal reference disabled (i.e., Tie REFLO to

AVDD). Serves as 1.2 V reference output when internal reference activated (i.e., Tie REFLO to ACOM).

Requires 0.1

µF capacitor to ACOM when internal reference activated.

18

FS ADJ

Full-Scale Current Output Adjust.

19

COMP1

Bandwidth/Noise Reduction Node. Add 0.1

µF to AVDD for optimum performance.

20

ACOM

Analog Common.

21

Complementary DAC Current Output. Full-scale current when all data bits are 0s.

22

DAC Current Output. Full-scale current when all data bits are 1s.

23

COMP2

Internal Bias Node for Switch Driver Circuitry. Decouple to ACOM with 0.1

µF capacitor.

24

AVDD

Analog Supply Voltage (+2.7 V to +5.5 V).

26

DCOM

Digital Common.

27

DVDD

Digital Supply Voltage (+2.7 V to +5.5 V).

28

CLOCK

Clock Input. Data latched on positive edge of clock.