DAC2902

4

SBAS167C

www.ti.com

PIN

DESIGNATOR

DESCRIPTION

1-12

D[11:0]_1

Data Port DAC1, Data Bit 11 (MSB) to Bit 0 (LSB).

13, 14

NC

No Connection

15

DGND

Digital Ground

16

+VD

Digital Supply, +3.0V to +5.5V

17

WRT1

DAC1 Input Latches Write Signal

18

CLK1

Clock Input DAC1

19

CLK2

Clock Input DAC2

20

WRT2

DAC2 Input Latches Write Signal

21

DGND

Digital Ground

22

+VD

Digital Supply, +3.0V to +5.5V

23-34

D[11:0]_2

Data Port DAC2, Data Bit 11 (MSB) to Bit 0 (LSB).

35, 36

NC

No Connection

37

PD

Power-Down Function Control Input;

H = DAC in power-down mode; L = DAC in normal operation (Internal pull-down for default “L”).

38

AGND

Analog Ground

39

IOUT2

Current Output DAC2. Full-scale with all bits of data port 2 HIGH.

40

IOUT2

Complementary Current Output DAC2. Full-scale with all bits of data port 2 LOW.

41

FSA2

Full-Scale Adjust, DAC2. Connect External RSET Resistor.

42

GSET

Gain-Setting Mode (H = 1 Resistor, L = 2 Resistor)

43

REFIN

Internal Reference Voltage output; External Reference Voltage input. Bypass with 0.1

µF to AGND for internal reference

operation.

44

FSA1

Full-Scale Adjust, DAC1. Connect External RSET Resistor

45

IOUT1

Complementary Current Output DAC1. Full-scale with all bits of data port 1 LOW.

46

IOUT1

Current Output DAC1. Full-scale with all bits of data port 1 HIGH.

47

+VA

Analog Supply, +3.0V to +5.5V

48

NC

No Connection

PIN DESCRIPTIONS

PIN CONFIGURATION

Top View

TQFP-48

36

35

34

33

32

31

30

29

28

27

26

25

1

2

3

4

5

6

7

8

9

10

11

12

48

47

46

45

44

43

42

41

40

39

38

13

14

15

16

17

18

19

20

21

22

23

37

24

DAC2902

NC

NC

D0_2

D1_2

D2_2

D3_2

D4_2

D5_2

D6_2

D7_2

D8_2

D9_2

D11_1 (MSB)

D10_1

D9_1

D8_1

D7_1

D6_1

D5_1

D4_1

D3_1

D2_1

D1_1

D0_1