AD9148 Analog Devices, AD9148 Datasheet - Page 35

• Manufacturer Part Number: AD9148
• Manufacturer: Analog Devices

Specifications of AD9148

• Resolution (bits): 16bit
• Dac Update Rate: 1GSPS
• Dac Settling Time: n/a
• Max Pos Supply (v): +3.47V
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: LVDS,Par

Data Sheet
Register Name
IDAC FSC Adj
IDAC Control
Aux IDAC Data
Aux IDAC Control
Addr
(Hex)
30
31
32
33
Bit
7:0
7
1:0
7:0
7
6
5
1:0
Name
IDAC FSC Adj
IDAC sleep
IDAC FSC Adj[9:8]
AUX IDAC Data
AUX IDAC sign
AUX IDAC
current direction
AUX IDAC
power-down
AUX IDAC Data[9:8]
Rev. B | Page 35 of 72
Function
IDAC full-scale current adjustment (LSB part). IDAC FS Adj[9:0]
sets the full-scale current of the IDAC. The full-scale current
can be adjusted from 8.64 mA to 31.6 mA in step sizes of
approximately 22.5 µA.
0x000 = 8.64 mA.
...
0x200 = 20.14 mA.
…
0x3FF = 31.66 mA.
Set DAC SPI select = 0 to configure DAC 1 path.
Set DAC SPI select = 1 to configure DAC 3 path.
I DAC sleep mode (fast wake-up mode).
IDAC full-scale current adjustment (MSB part)
Set DAC SPI select = 0 to configure DAC 1 path.
Set DAC SPI select = 1 to configure DAC 3 path.
Auxiliary IDAC data (LSB part). AUX IDAC Data[9:0] sets the
magnitude of the aux DAC current. The range is 0 mA to
2 mA, and the step size is 2 µA.
0x000 = 0.000 mA.
0x001 = 0x002 mA.
…
0x3FF = 2.046 mA.
Set DAC SPI select = 0 to configure DAC 1 path.
Set DAC SPI select = 1 to configure DAC 3 path.
Auxiliary IDAC output sign.
0 = positive, current is directed to the AUXx_P pin.
1 = negative, current is directed to the AUXx_N pin.
Auxiliary IDAC current direction.
0 = source.
1 = sink.
Auxiliary IDAC power-down.
Auxiliary IDAC data (MSB part).
Set DAC SPI select = 0 to configure DAC 1 path.
Set DAC SPI select =1 to configure DAC 3 path.
AD9148
Default
F9
0
01
00
0
0
0
00