MAX5825BAUP+ Maxim Integrated, MAX5825BAUP+ Datasheet - Page 30

• Manufacturer Part Number: MAX5825BAUP+
• Description: Digital to Analog Converters - DAC 12-Bit 8Ch V DAC w/I2C Interface
• Manufacturer: Maxim Integrated

Specifications of MAX5825BAUP+

• Rohs: yes
• Number Of Dac Outputs: 8
• Resolution: 12 bit
• Interface Type: I2C
• Settling Time: 4.5 us
• Maximum Operating Temperature: - 40 C to + 125 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-20
• Maximum Power Dissipation: 1084 mW
• Supply Current: 250 uA
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 2.7 V

The DEFAULT command (B[23:20] = 0110) selects the
default value for selected DACs. DACs which are not
selected do not update their default settings in response
to the command. These default values are used for all
future watchdog, clear, and gate operations. The new
default setting is determined by bits DF[2:0] (B[7:5])
while the affected DAC(s) are selected using B[15:8].
This command is inaccessible when a watchdog timeout
has occurred and the watchdog timer is configured with
a safety level of high or max. Note the selected default
values do not apply to resets initiated by SW_RESET
commands or supply cycling, both of which return all
DACs to the values determined by the M/Z input and
reset this register to M/Z mode.
Maxim Integrated
Table 11. DEFAULT Command Format
DEFAULT Command
Output DACs with Internal Reference and I
B23 B22 B21 B20 B19 B18 B17 B16 B15 B14 B13 B12 B11 B10 B9
0
1
1
Default Value →
Command Byte
Ultra-Small, Octal Channel, 8-/10-/12-Bit Buffered
0
0
Reserved
0
0
DEFAULT Command
0
7
1
6
1
Multiple DAC Selection
5
1
MAX5823/MAX5824/MAX5825
Data High Byte
4
1
3
1
Available default values (DF[2:0]):
M/Z (000): DAC channel defaults to value as selected by
the M/Z input (default).
ZERO (001): DAC channel defaults to zero scale.
MID (010): DAC channel defaults to midscale.
FULL (011): DAC channel defaults to full scale.
RETURN (100): DAC channel defaults to the value pro-
grammed by the RETURN command.
No Effect (101, 110, 111): DAC channel default behavior
is unchanged.
2
1
1
1
B8
0
1
101+: No Effect
DF2 DF1 DF0
Default Values:
B7
100: RETURN
0
001: ZERO
011: FULL
010: MID
000: M/Z
B6
0
B5
0
Data Low Byte
2
C Interface
B4
X
X
B3
X
X
Don’t Care
B2
X
X
B1
X
X
B0
X
X
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