参数资料
型号: MAX5725AAUP+T
厂商: Maxim Integrated Products
文件页数: 21/35页
文件大小: 0K
描述: IC DAC 12BIT SRL 20TSSOP
标准包装: 2,500
设置时间: 4.5µs
位数: 12
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
电压电源: 模拟和数字
功率耗散(最大): 1.08W
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 20-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 20-TSSOP
包装: 带卷 (TR)
输出数目和类型: 8 电流,单极
MAX5723/MAX5724/MAX5725
Ultra-Small, Octal-Channel, 8-/10-/12-Bit Buffered
Output DACs with Internal Reference and SPI Interface
28
Maxim Integrated
DEFAULT Command
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.
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.
Table 9. DEFAULT Command Format
B23 B22 B21 B20 B19 B18 B17 B16 B15 B14 B13 B12 B11 B10 B9
B8
B7
B6
B5
B4 B3 B2 B1 B0
0
1
0
7
6
5
4
3
2
1
0
DF2 DF1 DF0
X
DEFAULT Command
Reserved
Multiple DAC Selection
Default Values:
000: M/Z
001: ZERO
010: MID
011: FULL
100: RETURN
101+: No Effect
Don’t Care
Default Value
1
0
X
Command Byte
Data High Byte
Data Low Byte
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