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DAC8544

SLAS420 – MAY 2004

DEVICE INFORMATION (continued)

TERMINAL FUNCTIONS

DAC8544

Pin

Mnemonic

Function

1

VDD

Analog supply voltage, +2.7 V to +5.5 V

2

GND

Analog supply ground

3

IOGND

Digital supply ground

4

IOVDD

Digital supply +1.8 V to +5.5 V

5

D15

Digital input, MSB

6

D14

Digital input

7

D13

Digital input

8

D12

Digital input

9

D11

Digital input

10

D10

Digital input

11

D9

Digital input

12

D8

Digital input

13

D7

Digital input

14

D6

Digital input

15

D5

Digital input

16

D4

Digital input

17

D3

Digital input

18

D2

Digital input

19

D1

Digital input

20

D0

Digital input, LSB

21

IOVDD

Digital supply +1.8 V to +5.5 V

22

IOGND

Digital supply ground

23

A1

Address pin for selecting between DAC channels

24

A0

Address pin for selecting between DAC channels

25

CS

Active-low chip select. Used with R/W_ to write/read data to/from device

26

R/W

Read/Write select used to write data to input register or read data from DAC register

27

LDAC

Load DACs, rising edge triggered loads all DAC registers

28

GND

Analog ground

29

RST

Asynchronously resets contents of all DAC Registers to zero-scale, but does not affect input register

30

PD

Active-low power-down pin puts entire device into power-down mode with DAC outputs in 3-state condition

31

GND

Analog supply ground

32

VDD

Analog supply voltage, +2.7 V to +5.5 V

33

VOUTD

Analog output voltage from DAC-D

34

VFBD

Analog output sense for DAC-D

35

VREFD+

High reference voltage input for DAC-D

36

VREFD–

Low reference voltage input for DAC-D, normally VREFD– = GND

37

VOUTC

Analog output voltage from DAC-C

38

VFBC

Analog output sense for DAC-C

39

VREFC+

High reference voltage input for DAC-C

40

VREFC–

Low reference voltage input for DAC-C, normally VREFC– = GND

41

VOUTB

Analog output voltage from DAC-B

42

VFBB

Analog output sense for DAC-B

43

VREFB+

High reference voltage input for DAC-B

44

VREFB–

Low reference voltage input for DAC-B, normally VREFB– = GND

45

VOUTA

Analog output voltage from DAC-A

6