AD9257 Analog Devices, AD9257 Datasheet - Page 9

• Manufacturer Part Number: AD9257
• Description: Octal, 14-Bit, 40/65 MSPS Serial LVDS 1.8 V A/D Converter
• Manufacturer: Analog Devices

Data Sheet
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 8. Pin Function Descriptions
Pin No.
0, EP
1, 4, 7, 8, 11, 12, 37,
42, 45, 48, 51, 59, 62
13, 36
14, 35
2, 3
5, 6
9, 10
15, 16
17, 18
19, 20
21, 22
23, 24
25, 26
27, 28
29, 30
31, 32
33, 34
38
39
40
41
43, 44
46, 47
49, 50
52, 53
Mnemonic
AGND, Exposed Pad
AVDD
DNC
DRVDD
VIN+ G, VIN− G
VIN− H, VIN+ H
CLK−, CLK+
D− H, D+ H
D− G, D+ G
D− F, D+ F
D− E, D+ E
DCO−, DCO+
FCO−, FCO+
D− D, D+ D
D− C, D+ C
D− B, D + B
D− A, D+ A
SCLK/DTP
SDIO/DFS
CSB
PDWN
VIN+ A, VIN− A
VIN− B, VIN+ B
VIN+ C, VIN− C
VIN− D, VIN+ D
INDICATOR
DRVDD
NOTES
1. DNC = DO NOT CONNECT. DO NOT CONNECT TO THIS PIN.
2. THE EXPOSED PAD MUST BE CONNECTED TO ANALOG GROUND.
VIN+ G
VIN– G
VIN+ H
VIN– H
AVDD
AVDD
AVDD
AVDD
AVDD
AVDD
CLK–
CLK+
PIN 1
D– H
D+ H
DNC
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
Description
Analog Ground, Exposed Pad. The exposed thermal pad on the bottom of the package
provides the analog ground for the part. This exposed pad must be connected to ground
for proper operation.
1.8 V Analog Supply.
Do Not Connect.
1.8 V Digital Output Driver Supply.
ADC G Analog Input True, ADC G Analog Input Complement.
ADC H Analog Input Complement, ADC H Analog Input True.
Input Clock Complement, Input Clock True.
ADC H Digital Output Complement, ADC H Digital Output True.
ADC G Digital Output Complement, ADC G Digital Output True.
ADC F Digital Output Complement, ADC F Digital Output True.
ADC E Digital Output Complement, ADC E Digital Output True.
Data Clock Digital Output Complement, Data Clock Digital Output True.
Frame Clock Digital Output Complement, Frame Clock Digital Output True.
ADC D Digital Output Complement, ADC D Digital Output True.
ADC C Digital Output Complement, ADC C Digital Output True.
ADC B Digital Output Complement, ADC B Digital Output True.
ADC A Digital Output Complement, ADC A Digital Output True.
Serial Clock (SCLK)/Digital Test Pattern (DTP).
Serial Data Input/Output (SDIO)/Data Format Select (DFS).
Chip Select Bar.
Power-Down.
ADC A Analog Input True, ADC A Analog Input Complement.
ADC B Analog Input Complement, ADC B Analog Input True.
ADC C Analog Input True, ADC C Analog Input Complement.
ADC D Analog Input Complement, ADC D Analog Input True.
Figure 5. Pin Configuration, Top View
Rev. 0 | Page 9 of 40
(Not to Scale)
AD9257
TOP VIEW
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
AVDD
VIN+ B
VIN– B
AVDD
VIN– A
VIN+ A
AVDD
PDWN
CSB
SDIO/DFS
SCLK/DTP
AVDD
DNC
DRVDD
D+ A
D– A
AD9257