AD9148 Analog Devices, AD9148 Datasheet - Page 26

• 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

AD9148
Addr
0x54
0x55
0x56
0x57
0x58
0x59
0x5A
0x5C
0x5D
0x5E
0x5F
0x72
1
SPI REGISTER DESCRIPTIONS
Table 13. Register Descriptions
Register Name
Comm
Power Control
Register 0x20 to Register 0x3F and Register 0x41 to Register 0x51 configure DAC 1 (I) and DAC 2 (Q) data paths with DAC SPI select = 0 (Register 0x00[4]). Register 0x20
to Register 0x3F and Register 0x41 to Register 0x51 configure DAC 3 (I) and DAC 4 (Q) data paths with DAC SPI select = 1 (Register 0x00[4]).
Register
Name
FTW (LSB)
FTW
FTW
FTW (MSB)
Phase offset
(MSB)
Phase offset
(LSB)
DDS/mod
control
Die Temp
Control 0
Die Temp
Control 1
Die temp LSB
Die temp MSB
DCI delay
Bit 7
Bypass
DDS/MOD
0
Addr
(Hex)
00
01
Bit
7
6
5
4
7
6
5
Bit 6
Name
SDIO
LSB/MSB first
Software Reset
DAC SPI select
Power-Down
DAC Set 1
Power-Down
DAC Set 2
Power-down
data receiver
0
Bit 5
Frame NCO
reset ack
0
Rev. B | Page 26 of 72
Bit 4
Frame NCO
reset request
Function
SDIO operation.
0 = SDIO operates as an input only.
1 = SDIO operates as bidirectional input/output.
SPI communication LSB first (default is MSB first).
0 = MSB first.
1 = LSB first.
Software reset.
Reset is asserted when this bit transitions from 0 to 1.
Selects which DAC data path Register 0x20 to Register 0x3F
and Register 0x41 to Register 0x51 configure.
0 = DAC 1 (I path) and DAC 2 (Q path) are configured.
1 = DAC 3 (I path) and DAC 4 (Q path) are configured.
Power down DAC 1 and power down DAC 2.
Power down DAC 3 and power down DAC 4.
Power down the input data receiver.
NCO Phase Offset[15:8]
NCO Phase Offset[7:0]
Die Temp[15:8]
Die Temp[7:0]
0
FTW[23:16]
FTW[31:24]
FTW [15:8]
FTW[7:0]
Bit 3
FTW
update ack
1
Bit 2
FTW
update
request
0
Bit 1
Latch
temp
data
1
DCI Delay[1:0]
Bit 0
Sideband
select
Temp sensor
power-down
0
Data Sheet
Default
0
0
0
0
0
0
0
0
Default
0x00
0x00
0x00
0x00
0x00
0x00
0x80
0x01
0x20
0x00