Datasheet
AD9956
Rev. A | Page 11 of 32
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
13
14
15
16
17
18
19
20
21
22
23
24
SDO
SDI/O
SCLK
CS
DVDD_I/O
SYNC_OUT
PLL_LOCK/SYNC_IN
I/O_UPDATE
PS0
PS1
PS2
DGND
48
47
46
45
44
43
42
41
40
39
38
37
AVDD
DAC_RSE
T
DRV_RSET
CP_RSET
AVDD
AGND
PLLOSC
PLLOSC
PLLREF
PLLREF
AVDD
AGND
1
2
3
4
5
6
7
8
9
10
11
12
AGND
AVDD
AGND
AVDD
IOUT
IOUT
AVDD
AGND
I/O_RESET
RESET
DVDD
DGND
NC = NO CONNECT
CP_VDD
AGND
DRV
DRV
CP_VDD
AGND
REFCLK
REFCLK
AVDD
AGND
DVDD
35
CP_OUT36
34
33
32
31
30
29
28
27
26
25
AD9956
TOP VIEW
(Not to Scale)
PIN 1
INDICATOR
04806-0-008
Figure 3. 48-Lead LFCSP Pin Configuration
Note that the exposed paddle on this package is an electrical connection (Pin 49) as well as a thermal enhancement. For the device to
function properly, the paddle MUST be attached to analog ground.