AD9648 Analog Devices, AD9648 Datasheet - Page 38

• Manufacturer Part Number: AD9648
• Description: 14-Bit, 125 MSPS/105 MSPS, 1.8 V Dual Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9648

• Resolution (bits): 14bit
• # Chan: 2
• Sample Rate: 125MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p,2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

AD9648
Addr
(Hex)
0x18
0x19
0x1A
0x1B
0x1C
0x24
0x25
0x2A
0x2E
0x3A
0x100
0x101
0x102
Register
Name
VREF
select
(global)
User
Pattern 1
LSB
(global)
User
Pattern 1
MSB
(global)
User
Pattern 2
LSB
(global)
User
Pattern 2
MSB
MISR LSB
MISR MSB
Overrange
control
(global)
Output
assign
(local)
Sync
control
(global)
Sample
rate
override
User I/O
Control
Register 2
User I/O
Control
Register 3
Bit 7
(MSB)
Open
B7
B15
B7
B15
Open
Open
Open
Open
Output
enable
bar (OEB)
pin
enable
Open
Bit 6
Open
B6
B14
B6
B14
Open
Open
Open
Sample rate
override
enable
Open
Open
Bit 5
Open
B5
B13
B5
B13
Open
Open
Open
Open
Open
Bit 4
Open
B4
B12
B4
B12
Open
Open
Open
Open
Open
010 = 14 bits
100 = 12 bits
110 = 10 bits
Resolution
Rev. 0 | Page 38 of 44
MISR MSB[15:8]
MISR LSB[7:0]
Bit 3
Open
B3
B11
B3
B11
Open
Open
Open
Open
VCM power-
down
Bit 2
B2
B10
B2
B10
Open
Open
Sync
next only
Open
Internal V
001 = 1.14 V p-p
010 = 1.33 V p-p
100 = 105 MSPS
101 = 125 MSPS
000 = 1.0 V p-p
011 = 1.6 V p-p
100 = 2.0 V p-p
011 = 80 MSPS
Bit 1
B1
B9
B1
B9
Open
Open
Sync
enable
Open
Sample rate
REF
digital adjustment
Open
Bit 0
(LSB)
B0
B8
B0
B8
Overrange
output
0 =
disabled
1 =
enabled
0 = ADC A
1 = ADC B
(local)
Open
Disable
SDIO pull-
down
Default
Value
(Hex)
0x04
0x00
0x00
0x00
0x00
0xFF
0xFF
0x01
ADC A =
0x00
ADC B =
0x01
0x00
0x00
0x00
0x00
Comments
Select and/
or adjust
V
User-
defined
Pattern 1
LSB
User-
defined
Pattern, 1
MSB
User-
defined
Pattern 2
LSB
User-
defined
Pattern, 2
MSB
Read only
Read only
Overrange
control
settings
Assign an
ADC to an
output
channel
Sets the
global sync
options
OEB and
SDIO pin
controls
REF