AD9481 Analog Devices, AD9481 Datasheet - Page 9

• Manufacturer Part Number: AD9481
• Description: 8-Bit, 250 MSPS, 3.3 V A/D Converter
• Manufacturer: Analog Devices

Specifications of AD9481

• Resolution (bits): 8bit
• # Chan: 1
• Sample Rate: 250MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: (Vref) p-p,1 V p-p
• Adc Architecture: Pipelined
• Pkg Type: QFP

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 7. Pin Function Descriptions
Pin
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Name
CLK+
CLK−
AVDD
AGND
DRVDD
DRGND
D7A
D6A
D5A
D4A
D3A
D2A
D1A
D0A
DRGND
DCO−
DCO+
DRVDD
D0B
D1B
D2B
D3B
D4B
D5B
Description
Input Clock—True
Input Clock—Complement
3.3 V Analog Supply
Analog Ground
3.3 V Digital Output Supply
Digital Ground
Data Output Bit 7—Channel A (MSB)
Data Output Bit 6—Channel A
Data Output Bit 5—Channel A
Data Output Bit 4—Channel A
Data Output Bit 3—Channel A
Data Output Bit 2—Channel A
Data Output Bit 1—Channel A
Data Output Bit 0—Channel A (LSB)
Digital Ground
Data Clock Output—Complement
Data Clock Output—True
3.3 V Digital Output Supply
Data Output Bit 0—Channel B (LSB)
Data Output Bit 1—Channel B
Data Output Bit 2—Channel B
Data Output Bit 3—Channel B
Data Output Bit 4—Channel B
Data Output Bit 5—Channel B
D7A (MSB)
DRGND
DRVDD
AGND
AVDD
CLK+
CLK–
D6A
D5A
D4A
D3A
10
11
1
2
3
4
5
6
7
8
9
44 43 42 41 40 39 38 37 36 35 34
12
13 14 15 16 17 18 19 20 21 22
PIN 1
Figure 3. Pin Configuration
Rev. 0 | Page 9 of 28
(Not to Scale)
AD9481
TOP VIEW
Pin
No.
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
DS−
Name
D6B
D7B
DRGND
S1
PDWN
AVDD
AVDD
AGND
SENSE
VREF
AGND
AVDD
AGND
VIN−
VIN+
AGND
AVDD
S3
DS+
33
32
31
30
29
28
27
26
25
24
23
SENSE
AGND
AVDD
AVDD
PDWN
S1
DRGND
D7B (MSB)
D6B
D5B
D4B
Description
Data Output Bit 6—Channel B
Data Output Bit 7—Channel B (MSB)
Digital Ground
Data Format Select and Duty Cycle Stabilizer
Select
Power-Down Selection
3.3 V Analog Supply
3.3 V Analog Supply
Analog Ground
Reference Mode Selection
Voltage Reference Input/Output
Analog Ground
3.3 V Analog Supply
Analog Ground
Analog Input—Complement
Analog Input—True
Analog Ground
3.3 V Analog Supply
DCO Enable Select (Tie to AVDD for DCO
Active)
Data Sync Complement (If Unused, Tie to
DRVDD)
Data Sync True (If Unused, Tie to DGND)
AD9481