AD6643-250EBZ Analog Devices, AD6643-250EBZ Datasheet - Page 33

• Manufacturer Part Number: AD6643-250EBZ
• Description: Data Conversion IC Development Tools 11 Bit Dual IF Diversity 3G Receiver
• Manufacturer: Analog Devices
• Type: ADCr
• Series: AD6643r

Specifications of AD6643-250EBZ

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: AD6643-250
• Interface Type: SPI, USB
• Operating Supply Voltage: 6 V
• Description/function: 250 MSPs per channel dual IF receiver
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Operating Supply Current: 2 A
• Factory Pack Quantity: 1
• For Use With: HSC-ADC-EVALCZ

Data Sheet
Addr
(Hex)
0x0D
0x10
0x14
0x15
0x16
0x17
0x18
0x19
0x1A
Register
Name
Test mode
(local)
Offset adjust
(local)
Output
mode
Output
adjust
(global)
Clock phase
control
(global)
DCO output
delay
(global)
Input span
select
(global)
User Test
Pattern 1 LSB
(global)
User Test
Pattern 1
MSB (global)
Bit 7
(MSB)
User test
mode
control
0 =
continuous/
repeat
pattern
1 = single
pattern then
zeros
Open
Open
Open
Invert DCO
clock
Enable DCO
clock delay
Open
Bit 6
Open
Open
Open
Open
Open
Open
Open
Bit 5
Reset PN
long gen
Open
Open
Odd/Even
mode
output
enable
0 =
disabled
1 =
enabled
Open
Open
User Test Pattern 1[15:8]
User Test Pattern 1[7:0]
Bit 4
Reset
PN
short
gen
Output
disable
(local)
Open
Open
Rev. C | Page 33 of 40
Offset adjust in LSBs from +31 to −32
[delay = (3100 ps × register value/31 +100)]
(twos complement format)
Bit 3
Open
Open
0001 = 3.5 mA output drive current (default)
Full-scale input voltage selection
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
0111 = 2.0 mA output drive current
Bit 2
LVDS output drive current adjust
0100 = alternating checkerboard
Output invert (local)
1 = normal (default)
01111 = 2.087 V p-p
00001 = 1.772 V p-p
11111 = 1.727 V p-p
10000 = 1.383 V p-p
0111 = one/zero word toggle
DCO clock delay
11110 = 3100 ps
11111 = 3200 ps
0110 = PN short sequence
00000 = 100 ps
00001 = 200 ps
00010 = 300 ps
0101 = PN long sequence
1000 to 1111 = reserved
1001 to 1110 = unused
0 = inverted
1000 = user test mode
0001 = midscale short
1111 = ramp output
0000 = off (default)
0011 = negative FS
Output test mode
0010 = positive FS
Open
(reduced range)
…
…
…
Bit 1
Open
10 = gray code
Output format
11 = reserved
complement
00 = offset
01 = twos
(default)
binary
(local)
Bit 0
(LSB)
Open
Default
Value
(Hex)
0x00
0x00
0x05
0x01
0x00
0x00
0x00
0x00
0x00
Default Notes/
Comments
When this
register is set,
the test data
is placed on the
output pins in
place of normal
data
Configures the
outputs and
the format of the
data
Full-scale input
adjustment in
0.022 V steps
AD6643