MAX5816 MAXIM [Maxim Integrated Products], MAX5816 Datasheet - Page 26

• Manufacturer Part Number: MAX5816
• Description: Ultra-Small, Quad-Channel, 12-Bit Buffered Output DAC with Internal Reference and I2C Interface
• Manufacturer: MAXIM [Maxim Integrated Products]

The MAX5816 features a software-controlled power-
mode (POWER) command. The POWER command
updates the power-mode settings of the selected DACs
while the power settings of the remaining of the DACs
remain unchanged. The new power setting is determined
by bits B[5:4] while the affected DAC(s) are selected by
bits B[3:0]. If all DACs are powered down, the device
enters a STANDBY mode.
In power-down, the output is disconnected from the
buffer and is grounded when one of the two selectable
The SW_RESET and SW_CLEAR commands provide
a means of issuing a software reset or software clear
operation. Set B0 = 0 to issue a software clear operation
Table 9. POWER (100) Command Format
Table 10. SWRESET (101) Command Format
B23 B22 B21 B20 B19 B18 B17 B16 B15 B14 B13 B12 B11 B10 B9
B23 B22 B21 B20 B19 B18 B17 B16 B15 B14 B13 B12 B11 B10 B9 B8
Ultra-Small, Quad-Channel, 12-Bit Buffered Output DAC
0
0
X
X
SW_RESET and SW_CLEAR Command
Data Default Value ➝
Data Default Value ➝
1
SW_RESET or
Command
1
Command Byte
SW_CLEAR
POWER
Command
Command Byte
0
0
 Maxim Integrated Products 26
0
1
X
Don’t Care
X
Don’t Care
with Internal Reference and I
X
X
POWER Command
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Data High Byte
Data High Byte
Don’t Care
Don’t Care
X
X
X
X
X
X
internal resistors or set to high impedance. See
for the selectable internal resistor values in power-down
mode. In STANDBY mode, the DAC register retains its
value so that the output is restored when the device pow-
ers up. The serial interface remains active in power-down
mode.
In powered down mode, the internal reference can be
powered down or it can be set to remain powered-on
for external use in STANDBY mode, parts using external
reference do not load the REF. See
X
X
to return all CODE and DAC registers to the zero-scale
value. Set B0 = 1 to reset all CODE, DAC, and configura-
tion registers to their default values. See
X
X
X
X
X
X
X
X
B8
X
X
X
X
Don’t Care
B7
B7
X
X
X
X
B6
B6
X
X
X
X
PD1 PD0
B5
01 = 1kI
11 = Hi-Z
B5
X
X
Normal
0
Don’t Care
100kI
Power
Mode:
mode
00 =
10 =
2
Data Low Byte
Data Low Byte
B4
C Interface
X
X
B4
0
MAX5816
Table
B3
X
X
B3
D
1
DAC Selection
Table
B2
9.
X
X
B2
C
1
B1
10.
X
X
B1
Table 9
B
1
B0
R0
1
B0
A
1