DAC2932

SBAS279D − AUGUST 2003 − REVISED JULY 2005

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9

Terminal Functions (continued)

TERMINAL

NAME

DESCRIPTION

I/O

NO.

REFIN

25

I

External reference voltage input; internal reference voltage output; bypass with 0.1μF to AGND for internal

reference operation.

IOUT1

26

O

Complementary current ouput of I-DAC1

IOUT1

27

O

Current output of I-DAC1

AGND

28

Analog ground of I-DAC

+VA

29

Analog supply of I-DAC; 2.7V to 3.3V

+VA

30

Analog supply of I-DAC; 2.7V to 3.3V

AGND

31

Analog ground of I-DAC

AGND

32

Analog ground of I-DAC

IOUT2

33

O

Current output of I-DAC2

IOUT2

34

O

Complementary current ouput of I-DAC2

+VAV

35

Analog supply of V-DAC; 2.7V to 3.3V

NC

36

No internal connection

VOUT1

37

O

Voltage output of V-DAC1

VOUT2

38

O

Voltage output of V-DAC2

VOUT3

39

O

Voltage output of V-DAC3

VOUT4

40

O

Voltage output of V-DAC4

AGNDV

41

Analog ground of V-DAC

REFV

42

I

Reference voltage input for V-DACs; typically connected to supply (+VAV)

+VDV

43

Digital supply of V-DAC; 2.7V to 3.3V

PDV

44

I

Power-down of V-DACs; active high; a logic high initiates the power-down mode

DIN

45

I

Serial digital input for V−DAC; see timing and application sections for details

SCLK

46

I

Clock input of V-DAC

SYNC

47

I

Frame synchronization signal for the serial data at DIN. Refer to timing section for details.

DGNDV

48

Digital ground of V-DAC.