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| 型号： | MAX5223EKA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/11页 |
| 文件大小： | 0K |
| 描述： | IC DAC 8BIT DUAL LP SER SOT23-8 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 设置时间： | 50µs |
| 位数： | 8 |
| 数据接口： | 串行 |
| 转换器数目： | 2 |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-8 |
| 供应商设备封装： | SOT-23-8 |
| 包装： | 标准包装 |
| 输出数目和类型： | 2 电压，单极 |
| 采样率（每秒）： | * |
| 产品目录页面： | 1397 (CN2011-ZH PDF) |
| 其它名称： | MAX5223EKA+TDKR |
MAX5223
Low-Power, Dual, 8-Bit, Voltage Output
Serial DAC in 8-Pin SOT23
_______________________________________________________________________________________
9
Table 2. Serial-Interface Programming Commands
Table 3. Example of a 16-Bit Input Word
X =
Don’t care.
* = Not shown, for the sake of clarity. The functions of loading and shutting down the DACs and programming the logic can be combined in a single
command.
CONTROL
DATA
FUNCTION
D0
LSB
D1
D2
D3
D4
D5
D6
D7
MSB
LA
LB
UB4
SA
SB
UB3
UB2
UB1
X
1
*
0
X
No Operation to DAC Registers
Unassigned Command
Load Register to DAC B
Load Register to DAC A
Load Both DAC Registers
All DACs Active
Unassigned Command
Shutdown
X
8-Bit DAC Data
X
*
1
0
1
0
1
*
0
*
0
1
*
0
1
0
1
X
LOADED
IN FIRST
IN LAST
UB1
UB2
X
UB3
1
SB
0
SA
0
UB4
0
LB
1
LA
1
D7
1
D6
0
D5
0
D4
0
D3
0
D2
0
D1
0
D0
0
Digital Inputs
The digital inputs are compatible with CMOS logic.
Supply current increases slightly when toggling the
logic inputs through the transition zone between
0.3 VDD and 0.7 VDD.
Microprocessor Interfacing
The MAX5223 serial interface is compatible with
MICROWIRE, SPI, and QSPI. For SPI, clear the CPOL
and CPHA bits (CPOL = 0 and CPHA = 0). CPOL = 0
sets the inactive clock state to zero, and CPHA = 0
changes data at the falling edge of SCLK. This setting
allows SPI to run at full clock speeds. If a serial port is
not available on your P, three bits of a parallel port can
be used to emulate a serial port by bit manipulation.
Minimize digital feedthrough at the voltage outputs by
operating the serial clock only when necessary.
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