AD9709AST datasheet(5/27 Pages) AD

Teilenummer	AD9709AST

Bauteilbeschribung	8-Bit, 125 MSPS Dual TxDAC D/A Converter

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Hersteller	AD [Analog Devices]

Direct Link	http://www.analog.com

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REV. 0

AD9709

–5–

PIN FUNCTION DESCRIPTIONS

Pin No.

Name

Description

1–8

PORT1

Data Bits DB7–P1 to DB0–P1

9–14, 31–36

NC

No Connection

15, 21

DCOM1, DCOM2

Digital Common

16, 22

DVDD1, DVDD2

Digital Supply Voltage

17

WRT1/IQWRT

Input Write Signal for PORT 1 (IQWRT in Interleaving Mode)

18

CLK1/IQCLK

Clock Input for DAC1 (IQCLK in Interleaving Mode)

19

CLK2/IQRESET

Clock Input for DAC2 (IQRESET in Interleaving Mode)

20

WRT2/IQSEL

Input Write Signal for PORT 2 (IQSEL in Interleaving Mode)

23–30

PORT2

Data Bits DB7–P2 to DB0–P2

37

SLEEP

Power-Down Control Input

38

ACOM

Analog Common

39, 40

IOUTA2, IOUTB2

“PORT 2” Differential DAC Current Outputs

41

FSADJ2

Full-Scale Current Output Adjust for DAC2

42

GAINCTRL

Master/Slave Resistor Control Mode

43

REFIO

Reference Input/Output

44

FSADJ1

Full-Scale Current Output Adjust for DAC1

45, 46

IOUTB1, IOUTA1

“PORT 1” Differential DAC Current Outputs

47

AVDD

Analog Supply Voltage

48

MODE

Mode Select (1 = Dual Port, 0 = Interleaved)

PIN CONFIGURATION

NC

DB0-P1

DB1-P1

DB2-P1

DB3-P1

DB4-P1

DB5-P1

DB6-P1

DB7-P1(MSB)

NC

DB1-P2

DB2-P2

DB3-P2

DB4-P2

DB5-P2

DB0-P2

AD9709

DUAL 8-BIT DAC

48-PIN LQFP

12

11

10

9

8

7

6

5

4

3

2

1

26

27

28

29

30

31

32

33

34

35

36

25

24

23

22

21

20

19

18

17

16

15

14

13

37

38

39

40

41

42

43

44

45

46

47

48

PIN 1

IDENTIFIER

NC = NO CONNECT

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