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AD9642 Datasheet(PDF) 27 Page - Analog Devices

Part # AD9642
Description  1.8 V Analog-to-Digital Converter (ADC)
PDF  29 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD9642 Datasheet(HTML) 27 Page - Analog Devices

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AD9642
Data Sheet
Addr
(Hex)
Register
Name
Bit 7
(MSB)
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
(LSB)
Default
Value
(Hex)
Default
Notes/
Comments
0x10
Offset adjust
Open
Open
Offset adjust in LSBs from +31 to −32
(twos complement format)
0x00
0x14
Output mode
Open
Open
Open
Output
enable bar
0 = on
(default)
1 = off
Open
Output
invert
0 = normal
(default)
1 = inverted
Output format
00 = offset binary
01 = twos complement
(default)
10 = gray code
11 = reserved
0x01
Configures
the outputs
and the
format of
the data.
0x15
Output adjust
Open
Open
Open
Open
LVDS output drive current adjust
0000 = 3.72 mA output drive current
0001 = 3.5 mA output drive current (default)
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
0111 = 2.0 mA output drive current (reduced range)
1000 to 1111 = reserved
0x01
0x16
Clock phase
control
Invert
DCO clock
Open
Open
Open
Open
Open
Open
Open
0x00
0x17
DCO output
delay
Enable
DCO
clock
delay
Open
Open
DCO clock delay
[delay = (3100 ps × register value/31 + 100)]
00000 = 100 ps
00001 = 200 ps
00010 = 300 ps
…
11110 = 3100 ps
11111 = 3200 ps
0x00
0x18
Input span
select
Open
Open
Open
Full-scale input voltage selection
01111 = 2.087 V p-p
…
00001 = 1.772 V p-p
00000 = 1.75 V p-p (default)
11111 = 1.727 V p-p
…
10000 = 1.383 V p-p
0x00
Full-scale
input
adjustment
in 0.022 V
steps.
0x19
User Test
Pattern 1 LSB
User Test Pattern 1[7:0]
0x00
0x1A
User Test
Pattern 1 MSB
User Test Pattern 1[15:8]
0x00
0x1B
User Test
Pattern 2 LSB
User Test Pattern 2[7:0]
0x00
0x1C
User Test
Pattern 2 MSB
User Test Pattern 2[15:8]
0x00
0x1D
User Test
Pattern 3 LSB
User Test Pattern 3[7:0]
0x00
0x1E
User Test
Pattern 3 MSB
User Test Pattern 3[15:8]
0x00
0x1F
User Test
Pattern 4 LSB
User Test Pattern 4[7:0]
0x00
0x20
User Test
Pattern 4 MSB
User Test Pattern 4[15:8]
0x00
Rev. B | Page 26 of 28



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