AD9747 Analog Devices, AD9747 Datasheet - Page 20

• Manufacturer Part Number: AD9747
• Description: Dual 16-Bit 250 MSPS Digital-to-Analog Converters
• Manufacturer: Analog Devices

Specifications of AD9747

• Resolution (bits): 16bit
• Dac Update Rate: 250MSPS
• Dac Settling Time: n/a
• Max Pos Supply (v): +3.47V
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: Par

AD9741/AD9743/AD9745/AD9746/AD9747
SPI REGISTER MAP
Reading any register returns previously written values for all defined register bits, unless otherwise noted. Change serial port configu-
ration or execute software reset in single byte instruction only to avoid unexpected device behavior.
Table 14.
Register Name
SPI Control
Data Control
Power Down
DAC Mode Select
DAC1 Gain LSB
DAC1 Gain MSB
AUX DAC1 LSB
AUX DAC1 MSB
DAC2 Gain LSB
DAC2 Gain MSB
AUX DAC2 LSB
AUX DAC2 MSB
0x03
0x0A
Address
0x00
0x02
0x0B
0x0C
0x0D
0x0E
0x0F
0x10
0x11
0x12
Default
0x00
0x00
0x00
0xF9
0x01
0x00
0x00
0xF9
0x01
0x00
0x00
0x00
Bit 7
SDIODIR
DATTYPE
PD_DCO
AUX1PIN
AUX2PIN
Bit 6
LSBFIRST
ONEPORT
AUX1DIR
AUX2DIR
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Bit 5
SWRESET
PD_AUX2
Bit 4
INVDCO
PD_AUX1
AUXDAC1<7:0>
AUXDAC2<7:0>
DAC1FSC<7:0>
DAC2FSC<7:0>
Bit 3
PD_BIAS
DAC1MOD<1:0>
Bit 2
PC_CLK
Bit 1
PD_DAC2
DAC2MOD<1:0>
DAC1FSC<9:8>
AUXDAC1<9:8>
DAC2FSC<9:8>
AUXDAC2<9:8>
Bit 0
PD_DAC1