ad5669rbruz Analog Devices, Inc., ad5669rbruz Datasheet - Page 29

• Manufacturer Part Number: ad5669rbruz
• Description: Octal, 12-/16-bit Dac, I C , 5ppm/
• Manufacturer: Analog Devices, Inc.

AD5629R/AD5669R
Table 10. Internal Reference Register
Internal REF Register (DB0)
0
1
Table 11. 32-Bit Input Shift Register Contents for Reference Set-Up Command
DB23
1
Table 12. Power-Down Modes of Operation
DB9
0
0
1
1
Table 13. Internal reference setup
DB9
0
0
1
1
Table 14. 32-Bit Input Shift Register Contents for Power-Down/Power-Up Function
DB23
0
Table 15. Clear Code Register
DB1
CR1
0
0
Command bits (C3 to C0)
Command bits (C3 to C0)
DB22
1
Clear Code Register
DB22
0
DB21
0
DB21
0
DB8
0
1
0
1
DB8
0
1
0
1
DB0
CR0
0
1
DB20
0
DB20
0
DB19
X
Address bits (A3 to A0)—
DB19
X
Operating Mode
Normal operation
Power-down modes
1 kΩ to GND
100 kΩ to GND
Three-state
Operating Mode
Internal reference off
2.5V interenal reference on
Internal reference off
1.25V internal reference on
DB18
X
Address bits (A3 to A0)—don’t
don’t cares
Clears to Code
0x0000
0x8000
DB18
X
DB17
X
STRING DAC
RESISTOR
cares
Figure 77. Output Stage During Power-Down
DB16
X
DB17
X
DB15
to
DB10
X
Don’t
cares
Rev. PrA | Page 29 of 33
POWER-DOWN
AMPLIFIER
CIRCUITRY
X
DB16
DB9
PD1
down mode
Power-
Action
Reference off (default)
Reference on
DB8
PD0
DB15 to
DB2
X
Don’t cares
DB7
DAC
H
Power-down/power-up channel selection—set bit to 1 to select
RESISTOR
NETWORK
DB6
DAC
G
LSB
DB1
1/0
2.5V/1.25V
internal REF
V
OUT
DB5
DAC
F
Preliminary Technical Data
DB4
DAC
E
DB0
1/0
Internal REF
on/off
DB3
DAC
D
DB2
DAC
C
DB1
DAC
B
LSB
DB0
DAC
A