AD9954(Rev0) データシートの表示（PDF） - Analog Devices

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AD9954
(Rev.:Rev0)

400 MSPS 14-Bit, 1.8 V CMOS Direct Digital Synthesizer

Analog Devices 

AD9954

PIN CONFIGURATIONS

48 47 46 45 44 43 42 41 40 39 38 37

I/O UPDATE 1

DVDD 2

DGND 3

AVDD 4

AGND 5

AVDD 6

AGND 7

OSC/REFCLK 8

OSC/REFCLK 9

C R YST A L O U T 10

C L K MO D ESEL EC T 11

L OO P_ F I L T ER 12

AD9954

TOP VIEW

(Not to Scale)

36 R E S E T

35 P W R D W N C T L

34 D V D D

33 D G N D

32 A G N D

31 C O M P _ I N

30 C O M P _ I N

29 A V D D

28 C O M P _ O U T

27 A VD D

26 A G N D

25 A VD D

13 14 15 16 17 18 19 20 21 22 23 24

Figure 3. 48-Lead EP_TQFP

Note that the exposed paddle on the bottom of the package forms an electrical connection for the DAC and must be attached to

analog ground. Note that Pin 43, DVDD_I/O, can be powered to 1.8 V or 3.3 V. The DVDD pins (Pin 2 and Pin 34) can only be

powered to 1.8 V.

Rev. 0 | Page 8 of 36

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