Datasheet
AD9430
Rev. E | Page 13 of 44
PIN 1
AD9430
LVDS PINOUT
TOP VIEW
(Not to Scale)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29 30 31
32
33 34 35
36
37 38 39
40
41 42 43 44 45 46 47 48 49 50
767778798081828384858687888990919293949596979899100
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
02607-005
S5
DNC
S4
AGND
S2
S1
LVDSBIAS
AVDD
AGND
SENSE
VREF
AGND
AGND
AVDD
AVDD
AGND
AGND
AVDD
AVDD
AGND
VIN+
VIN–
AGND
AVDD
AGND
NOTES
1. THE AD9430 HAS A CONDUCTIVE HEAT SLUG TO HELP DISSIPATE HEAT AND ENSURE RELIABLE OPERATION OF
THE DEVICE OVER THE FULL INDUSTRIAL TEMPERATURE RANGE. THE SLUG IS EXPOSED ON THE BOTTOM OF
THE PACKAGE AND ELECTRICALLY CONNECTED TO CHIP GROUND. IT IS RECOMMENDED THAT NO PCB SIGNAL
TRACES OR VIAS BE LOCATED UNDER THE PACKAGE THAT COULD COME IN CONTACT WITH THE CONDUCTIVE
SLUG. ATTACHING THE SLUG TO A GROUND PLANE WILL REDUCE THE JUNCTION TEMPERATURE OF THE
DEVICE WHICH MAY BE BENEFICIAL IN HIGH TEMPERATURE ENVIRONMENTS.
AGND
AVDD
AVDD
AVDD
AGND
AGND
GND
AVDD
AVDD
AGND
CLK+
CLK–
AGND
AVDD
AVDD
AGND
DNC
DNC
DNC
DNC
DNC
DRVDD
DRGND
D0–
D0+
DRVDD
DRGND
D8+
D8–
D7+
D7–
D6+
D6–
DRGND
D5+
D5–
DCO+
DCO–
DRVDD
DRGND
D4+
D4–
D3+
D3–
D2+
D2Ð
DRVDD
DRGND
D1+
D1–
D11–
D10+
D10–
D9+
D9–
AGND
AVDD
AVDD
AGND
AGND
AVDD
AVDD
AGND
AGND
AGND
AVDD
AVDD
AVDD
AGND
AGND
OR+
OR–
DRVDD
DRGND
D11+
Figure 5. LVDS Mode Pin Configuration
Table 8. LVDS Mode Pin Function Descriptions
Pin Number Mnemonic Description
1 S5 Full-Scale Adjust Pin. AVDD sets f
S
= 0.768 V p-p differential,
GND sets f
S
= 1.536 V p-p differential.
2, 42 to 46 DNC Do Not Connect.
3 S4
Control Pin for CMOS Mode. Tie low when operating in LVDS
mode.
4, 9, 12, 13, 16, 17, 20, 23, 25, 26, 30, 31, 35, 38, 41, 86, 87, 91,
92, 93, 96, 97, 100
AGND
1
Analog Ground.
5 S2 Output Mode Select. GND = dual-port CMOS; AVDD = LVDS.
6 S1
Data Format Select. GND = binary, AVDD = twos complement.
7 LVDSBIAS
Set Pin for LVDS Output Current. Place 3.74 kW resistor
terminated to ground.
8, 14, 15, 18, 19, 24, 27, 28, 29, 33, 34, 39, 40, 88, 89, 90, 94, 95,
AVDD
2
3.3 V Analog Supply.
98, 99
10 SENSE
Reference Mode Select Pin. Float for internal reference
operation.
11 VREF 1.235 V Reference I/O—Function Dependent on SENSE.
21 VIN+ Analog Input—True.