AD9781 Analog Devices, AD9781 Datasheet - Page 22

• Manufacturer Part Number: AD9781
• Description: Dual 14-Bit, LVDS Interface 500 MSPS DAC
• Manufacturer: Analog Devices

Specifications of AD9781

• Resolution (bits): 14bit
• Dac Update Rate: 500MSPS
• Dac Settling Time: n/a
• Max Pos Supply (v): +3.47V
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: LVDS,Par

AD9780/AD9781/AD9783
Register
AUXDAC1
DAC2 FSC
AUXDAC2
BIST Control
BIST Result 1
BIST Result 2
Hardware Version
Address
0x0D
0x0E
0x0E
0x0F
0x10
0x11
0x12
0x12
0x1A
0x1B
0x1C
0x1D
0x1E
0x1F
Bit
7:0
1:0
7
6
7:0
1:0
7:0
1:0
7
6
7
6
5
7:0
7:0
7:0
7:0
7:4
3:0
Name
AUXDAC1[9:0]
AUX1SGN
AUX1DIR
DAC2FSC[9:0]
AUXDAC2[9:0]
AUX2SGN
AUX2DIR
BISTEN
BISTRD
BISTCLR
BISTRES1[15:0]
BISTRES2[15:0]
VERSION[3:0]
DEVICE[3:0]
Function
0x3FF, sets AUXDAC1 output current to 2.0 mA.
0x200, sets AUXDAC1 output current to 1.0 mA.
0x000, sets AUXDAC1 output current to 0.0 mA.
0, AUX1P output pin is active.
1, AUX1N output pin is active.
0, configures AUXDAC1 output to source current.
1, configures AUXDAC1 output to sink current.
DAC2 full-scale 10-bit adjustment word.
0x3FF, sets DAC full-scale output current to the maximum value of 31.66 mA.
0x200, sets DAC full-scale output current to the nominal value of 20.0 mA.
0x000, sets DAC full-scale output current to the minimum value of 8.66 mA.
AUXDAC2 output current adjustment word.
0x3FF, sets AUXDAC2 output current to 2.0 mA.
0x200, sets AUXDAC2 output current to 1.0 mA.
0x000, sets AUXDAC2 output current to 0.0 mA.
0, AUX2P output pin is active.
1, AUX2N output pin is active.
0, configures AUXDAC2 output to source current.
1, configures AUXDAC2 output to sink current.
1, enables and starts built-in self-test.
1, transfers BIST result registers to SPI for readback.
1, reset BIST logic and clear BIST result registers.
16-bit result generated by BIST 1.
16-bit result generated by BIST 2.
Read only register; indicates the version of the chip.
Read only register; indicates the device type.
AUXDAC1 output current adjustment word.
Rev. A | Page 22 of 36