AD9148BPCZ AD [Analog Devices], AD9148BPCZ Datasheet - Page 35

• Manufacturer Part Number: AD9148BPCZ
• Description: Quad 16-Bit,1 GSPS, TxDAC+ Digital-to-Analog Converter
• Manufacturer: AD [Analog Devices]

Preliminary Technical Data
Register Name
QDAC FSC Adj
QDAC Control
Aux QDAC Data
Aux QDAC Control
Addr
(Hex)
34
35
36
37
Bit
7:0
7
1:0
7:0
7
6
5
1:0
Name
QDAC FSC Adj[7:0]
QDAC sleep
QDAC FSC Adj[9:8]
AUX QDAC
Data[7:0]
AUX QDAC sign
AUX QDAC
current direction
AUX QDAC
power down
AUX QDAC
Data[9:8]
Rev. PrA | Page 35 of 73
Function
Q DAC full-scale current adjustment (LSB part). QDAC FS
Adj[9:0] sets the full-scale current of the QDAC. 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 = 20.14mA
…
0x3FF = 31.66 mA
Set DAC SPI select = 0 to configure DAC 2 path.
Set DAC SPI select = 1 to configure DAC 4 path.
Q DAC sleep mode (fast wake-up mode).
QDAC full-scale current adjustment (MSB part).
Set DAC SPI select = 0 to configure DAC 2 path.
Set DAC SPI select = 1 to configure DAC 4 path.
Auxiliary QDAC data (LSB part). AUX QDAC 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 2 path.
Set DAC SPI select = 1 to configure DAC 4 path.
Auxiliary QDAC output sign.
0 = positive, current is directed to the AUXx_P pin.
1 = negative, current is directed to the AUXx_N pin.
Auxiliary QDAC current direction.
0 = source.
1 = sink.
Auxiliary QDAC power down.
Auxiliary QDAC data (MSB part).
Set DAC SPI select = 0 to configure DAC 2 path.
Set DAC SPI select = 1 to configure DAC 4 path.
AD9148
Default
F9
0
01
00
0
0
0
00