AD9634 Analog Devices, AD9634 Datasheet - Page 28

• Manufacturer Part Number: AD9634
• Description: 12-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9634

• Resolution (bits): 12bit
• # Chan: 1
• Sample Rate: 250MSPS
• Interface: LVDS
• Analog Input Type: Diff-Uni
• Ain Range: 1.75 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

AD9634
Addr
(Hex)
0x0E
0x10
0x14
0x15
0x16
0x17
0x18
0x19
0x1A
0x1B
0x1C
0x1D
0x1E
0x1F
0x20
0x24
0x25
Register
Name
BIST enable
Offset adjust
Output mode
Output adjust
Clock phase
control
DCO output
delay
Input span
select
User Test
Pattern 1 LSB
User Test
Pattern 1 MSB
User Test
Pattern 2 LSB
User Test
Pattern 2 MSB
User Test
Pattern 3 LSB
User Test
Pattern 3 MSB
User Test
Pattern 4 LSB
User Test
Pattern 4 MSB
BIST signature
LSB
BIST signature
MSB
Bit 7
(MSB)
Open
Open
Open
Open
Invert
DCO clock
Enable
DCO
clock
delay
Open
Bit 6
Open
Open
Open
Open
Open
Open
Open
Bit 5
Open
Open
Open
Open
Open
Open
Bit 4
Open
Output
enable bar
0 = on
(default)
1 = off
Open
Open
User Test Pattern 1[15:8]
User Test Pattern 2[15:8]
User Test Pattern 3[15:8]
User Test Pattern 4[15:8]
User Test Pattern 1[7:0]
User Test Pattern 2[7:0]
User Test Pattern 3[7:0]
User Test Pattern 4[7:0]
Rev. 0 | Page 28 of 32
BIST signature[15:8]
BIST signature[7:0]
Offset adjust in LSBs from +31 to −32
Bit 3
Open
Open
(twos complement format)
Open
0111 = 2.0 mA output drive current (reduced range)
Full-scale input voltage selection
[delay = (3100 ps × register value/31 + 100)]
0001 = 3.5 mA output drive current (default)
00000 = 1.75 V p-p (default)
0000 = 3.72 mA output drive current
0010 = 3.30 mA output drive current
0011 = 2.96 mA output drive current
0100 = 2.82 mA output drive current
0101 = 2.57 mA output drive current
0110 = 2.27 mA output drive current
01111 = 2.087 V p-p
00001 = 1.772 V p-p
11111 = 1.727 V p-p
10000 = 1.383 V p-p
DCO clock delay
00000 = 100 ps
00001 = 200 ps
00010 = 300 ps
…
11110 = 3100 ps
11111 = 3200 ps
LVDS output drive current adjust
Bit 2
Reset BIST
sequence
Output
invert
0 = normal
(default)
1 =
inverted
Open
1000 to 1111 = reserved
…
…
Bit 1
Open
Open
01 = twos complement
00 = offset binary
10 = gray code
Output format
11 = reserved
(default)
Bit 0
(LSB)
BIST enable
Open
Default
Value
(Hex)
0x00
0x00
0x01
0x01
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
Default
Notes/
Comments
Configures
the outputs
and the
format of
the data.
Full-scale
input
adjustment
in 0.022 V
steps.
Read only.
Read only.