AD5666 Analog Devices, AD5666 Datasheet - Page 24

• Manufacturer Part Number: AD5666
• Manufacturer: Analog Devices

Specifications of AD5666

• Resolution (bits): 16bit
• Dac Update Rate: 95kSPS
• Dac Settling Time: 6µs
• Max Pos Supply (v): +5.5V
• Single-supply: Yes
• Dac Type: Voltage Out
• Dac Input Format: Ser,SPI

AD5666
Table 9. Daisy-Chain Enable/Internal Reference Register
DCEN (DB1)
0
0
1
1
Table 10. 32-Bit Input Shift Register Contents for Daisy-Chain Enable and Reference Set-Up Function
MSB
DB31 to DB28
X
Don’t cares
Table 11. Modes of Operation
DB9
0
0
1
1
Table 12. 32-Bit Input Shift Register Contents for Power-Up/Power-Down Function
MSB
DB31 to
DB28
X
Don’t
cares
DB27
0
Command bits (C2 to C0)
DB26
1
DB8
0
1
0
1
DB27
1
DB25
0
Command bits (C3 to C0)
DB26
0
DB24
0
Normal operation
Power-down modes
Operating Mode
1 kΩ to GND
100 kΩ to GND
Three-state
DB25
0
DB23
X
Address bits (A3 to A0)—
REF (DB0)
0
1
0
1
STRING DAC
RESISTOR
DB22
X
DB24
0
don’t cares
Figure 44. Output Stage During Power-Down
DB21
X
DB23
X
Rev. D | Page 24 of 28
POWER-DOWN
DB20
X
AMPLIFIER
CIRCUITRY
Address bits (A3 to A0)
DB22
X
DB19 to
DB10
X
Don’t
cares
DB9
PD1
DB21
X
NETWORK
Power-down
RESISTOR
mode
DB8
PD0
V
OUT
DB20
X
Action
Standalone mode, reference off (default)
Standalone mode, reference on
DCEN mode, reference off
DCEN mode, reference on
DB7 to
DB4
X
Don’t
cares
DB19 to DB2
X
Don’t cares
DB3
DAC D
Power-down/power-up channel selection—
DB2
DAC C
set bit to 1 to select
DB1
1/0
DB1
DAC B
DCEN/REF
register
LSB
DB0
1/0
LSB
DB0
DAC A