Data Sheet

©2009-2013 Exar Corporation

2/15

Rev 2B

Pin Assignments

Pin No.

Pin Name

Description

1, 18, 23

Digital and I/O-ring pre driver supply voltage, 1.8V

2

CM_EXT

Common Mode voltage output

3, 9, 12

Analog supply voltage, 1.8V

4, 5, 8

Analog ground

6, 7

IP0, IN0

Analog input Channel 0 (non-inverting, inverting)

10, 11

IP1, IN1

Analog input Channel 1 (non-inverting, inverting)

13

Clock circuitry ground

14

Clock circuitry supply voltage, 1.8V

15

CLKP

Clock input, non-inverting (Format: LVDS, PECL, CMOS/TTL, Sine Wave)

16

CLKN

Clock input, inverting. For CMOS input on CLKP, connect CLKN to ground

17, 64

Digital circuitry ground

19

CLK_EXT_EN

CLK_EXT signal enabled when low (zero). Tristate when high.

20

Data format selection. 0: Offset Binary, 1: Two's Complement

21

PD_N

Full chip Power Down mode when Low. All digital outputs reset to zero. After chip power up,

always apply Power Down mode before using Active mode to reset chip.

22

OE_N_1

Output Enable Channel 0. Tristate when high

24, 41, 58

I/O ring post-driver supply voltage. Voltage range 1.7V to 3.6V.

25, 40, 57

Ground for I/O ring

Pin Configuration

QFN-64, TQFP-64

CDK2308

QFN-64

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

48

47

46

45

44

43

N/C

N/C

N/C

42

41

40

39

38

37

36

35

34

33

DVDDCLK

CLKN

CLKP

DVSSCLK

CLK_EXT