AD9739 Analog Devices, AD9739 Datasheet - Page 26

• Manufacturer Part Number: AD9739
• Description: 14-Bit, 2500 MSPS, RF Digital-to-Analog Converter
• Manufacturer: Analog Devices

Specifications of AD9739

• Resolution (bits): 14bit
• Dac Update Rate: 2.5GSPS
• Dac Settling Time: n/a
• Max Pos Supply (v): +3.5V
• Single-supply: Yes
• Dac Type: Current Out
• Dac Input Format: LVDS,Par

AD9739
Address
(Hex)
0x28
0x29
0x2A
PART ID
Table 25. Part ID Register
Address (Hex)
0x35
Name
MUDEL[8:1]
SEARCH_TOL
Retry
CONTRST
Guard[4:0]
MU_LST
MU_LKD
Bit
[7:0]
7
6
5
4
1
0
Name
PART_ID
R/W
W
R
R/W
R/W
R/W
R/W
R
R
Default
Setting
0x00
0x00
0
0
0
01011
0
0
Comments
With enable (Bit 0, Register 0x26) set to 0, this 9-bit value represents the value that
the mu delay is set to. Note that the maximum value is 432.
With enable set to 1, this value represents the mu delay value at which the
controller begins its search. Setting this value to the delay line midpoint of 216 is
recommended.
When read (Bit 3, Register 0x26) is set to 1, the value read back is equal to the value
written into the register when enable = 0 or the value that the mu controller locks
to when enable = 1.
0 = not exact (can find a phase within two values of the desired phase).
1 = finds the exact phase that is targeted (optimal setting).
0 = stop the search if the correct value is not found.
1 = retry the search if the correct value is not found.
Controls whether the controller resets or continues when it does not find the
desired phase.
0 = continue (optimal setting).
1 = reset.
Sets a guard band from the beginning and end of the mu delay line which the mu
controller does not enter into unless it does not find a valid phase outside the
guard band (optimal value is Decimal 11 or 0x0B).
0 = mu controller has not lost lock.
1 = mu controller has lost lock.
0 = mu controller is not locked.
1= mu controller is locked.
Bit
[7:0]
Rev. B | Page 26 of 48
R/W
R
Default
Setting
0x20
Comments
Part ID number.
Data Sheet