AD9705 Analog Devices, AD9705 Datasheet - Page 33

• Manufacturer Part Number: AD9705
• Manufacturer: Analog Devices

Specifications of AD9705

• Resolution (bits): 10bit
• Dac Update Rate: 175MSPS
• Dac Settling Time: 11ns
• Max Pos Supply (v): +3.6V
• Single-supply: Yes
• Dac Type: Current Out
• Dac Input Format: Par

Data Sheet
SPI REGISTER DESCRIPTIONS
Table 16. SPI CTL—Register 0x00
Mnemonic
SDIODIR
DATADIR
SWRST
LNGINS
PDN
Sleep
CLKOFF
EXREF
Table 17. Data—Register 0x02
Mnemonic
DATAFMT
DCLKPOL
DESKEW
CLKDIFF
CALCLK
Table 18. Version—Register 0x0D
Mnemonic
VER[3:0]
Table 19. CALMEM—Register 0x0E
Mnemonic
CALMEM[1:0]
DIVSEL[2:0]
Bit No.
7
6
5
4
3
2
1
0
Bit No.
7
4
3
2
0
Bit No.
[3:0]
[5:4]
[2:0]
Bit No.
Direction (I/O)
I
I
I
I
I
I
I
I
Direction (I/O)
I
I
I
I
I
Direction (I/O)
O
O
I
Direction (I/O)
Default
1
0
0
0
0
0
0
0
Default
0000
Default
0
0
0
0
0
Default
00
000
Description
0 = SDIO pin configured for input only during data transfer (4-wire interface).
1 = SDIO pin configured for input or output during data transfer (3-wire interface).
0 = Serial data uses MSB first format.
1 = Serial data uses LSB first format.
1 = initiates a software reset; this bit is set to 0 upon reset completion.
0 = uses 1 byte preamble (5 address bits).
1 = uses 2 byte preamble (13 address bits).
1 = shuts down DAC output current internal band gap reference.
1 = DAC output current off.
1 = disables internal master clock.
0 = internal band gap reference.
1 = external reference.
Rev. B | Page 33 of 44
Description
Hardware version identifier
Description
0 = unsigned binary input data format
1 = twos complement input data format
0 = data latched on DATACLK rising edge always
1 = data latched on DATACLK falling edge (only active in DESKEW mode)
0 = DESKEW mode disabled.
1 = DESKEW mode enabled (adds a register in digital data path to remove
skew in received data; one clock cycle of latency is introduced)
0 = single-ended clock input
1 = differential clock input
0 = calibration clock disabled
1 = calibration clock enabled
Description
Calibration memory
Calibration clock divide ratio from DAC clock rate
00 = uncalibrated
01 = self-calibration
10 = not used
11 = user input
000 = divide by 256
001 = divide by 128
…
110 = divide by 4
111 = divide by 2
AD9704/AD9705/AD9706/AD9707