MAX5802AAUB+T Maxim Integrated, MAX5802AAUB+T Datasheet - Page 25

• Manufacturer Part Number: MAX5802AAUB+T
• Description: Digital to Analog Converters - DAC 12-Bit 2Ch DAC w/I2C
• Manufacturer: Maxim Integrated

Specifications of MAX5802AAUB+T

• Rohs: yes

Table 7. Selectable DAC Output Impedance in Power-Down Mode
Maxim Integrated
The MAX5800/MAX5801/MAX5802 feature a software-
controlled power-mode (POWER) command (B[23:18]
= 010000). The POWER command updates the power-
mode settings of the selected DACs while the power set-
tings of the rest of the DACs remain unchanged. The new
power setting is determined by bits B[17:16] while the
affected DAC(s) are selected by bits B[9:8]. If all DACs
are powered down, the device enters a STANDBY mode.
In power-down, the DAC output is disconnected from the
buffer and is grounded with either one of the two selectable
internal resistors or set to high impedance. See
the selectable internal resistor values in power-down mode.
In power-down mode, the DAC register retains its value so
Table 6. POWER Command Format
Ultra-Small, Dual-Channel, 8-/10-/12-Bit Buffered Output
B23 B22 B21 B20 B19 B18 B17 B16
0
Default Values (all DACs) ➝
POWER Command
PD1 (B17)
1
0
0
1
1
0
DACs with Internal Reference and I
0
0
0
PD0 (B16)
10 = 100kI
PD1 PD0
01 = 1kI
11 = Hi-Z
Normal
0
Mode:
Power
00 =
POWER Command
0
1
0
1
0
B15
X
X
B14 B13 B12 B11 B10
Normal operation
Power-down with internal 1kI pulldown resistor to GND.
Power-down with internal 100kI pulldown resistor to GND.
Power-down with high-impedance output.
Table 7
X
X
Don’t Care
MAX5800/MAX5801/MAX5802
X
X
for
X
X
X
X
that the output is restored when the device powers up. The
serial interface remains active in power-down mode.
In STANDBY mode, the internal reference can be pow-
ered down or it can be set to remain powered-on for
external use. Also, in STANDBY mode, devices using the
external reference do not load the REF pin. See
The SW_RESET (B[23:16] = 01010001) and SW_CLEAR
(B[23:16] = 01010000) commands provide a means of
issuing a software reset or software clear operation. Use
SW_CLEAR to issue a software clear operation to return
all CODE and DAC registers to the zero-scale value. Use
SW_RESET to reset all CODE, DAC, and configuration
registers to their default values.
X
X
SW_RESET and SW_CLEAR Command
1 = DAC
Selected
0 = DAC
Selected
B9
B
1
Select:
DAC
OPERATINg MODE
Not
B8
A
1
B7
X
X
B6
X
X
B5
X
X
2
Don’t Care
C Interface
B4
X
X
B3
X
X
B2
X
X
Table
B1
X
X
B0
X
X
25
6.