参数资料
型号: AD5757ACPZ
厂商: Analog Devices Inc
文件页数: 24/44页
文件大小: 0K
描述: IC DAC 16BIT QUAD 64-LFCSP
特色产品: AD5755 / AD5755-1 / AD5757 DACs
标准包装: 1
设置时间: 15µs
位数: 16
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 4
电压电源: 模拟和数字
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 64-VFQFN 裸露焊盘,CSP
供应商设备封装: 64-LFCSP-VQ(9x9)
包装: 管件
输出数目和类型: *
采样率(每秒): *
AD5757
Data Sheet
Rev. D | Page 30 of 44
DAC Control Register
The DAC control register is used to configure each DAC channel. The DAC control register options are shown in Table 19 and Table 20.
Table 19. Programming DAC Control Register
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
0
1
0
INT_ENABLE
CLR_EN
OUTEN
RSET
DC_DC
R2
R1
R0
1 X = don’t care.
Table 20. DAC Control Register Functions
Bit
Description
INT_ENABLE
Powers up the dc-to-dc converter, DAC, and internal amplifiers for the selected channel. Does not enable the output. Can
only be done on a per channel basis. It is recommended to set this bit and allow a >200 s delay before enabling the
output because this results in a reduced output enable glitch. Plots of this glitch can be found in Figure 25.
CLR_EN
Per channel clear enable bit. Selects if this channel clears when the CLEAR pin is activated.
CLR_EN = 1, channel clears when the part is cleared.
CLR_EN = 0, channel does not clear when the part is cleared (default).
OUTEN
Enables/disables the selected output channel.
OUTEN = 1, enables the channel.
OUTEN = 0, disables the channel (default).
RSET
Selects an internal or external current sense resistor for the selected DAC channel.
RSET = 0, selects the external resistor (default).
RSET = 1, selects the internal resistor.
DC_DC
Powers the dc-to-dc converter on the selected channel.
DC_DC = 1, power up the dc-to-dc converter.
DC_DC = 0, power down the dc-to-dc converter (default).
This allows per channel dc-to-dc converter power-up/power-down. To power down the dc-to-dc converter, the OUTEN and
INT_ENABLE bits must also be set to 0.
All dc-to-dc converters can also be powered up simultaneously using the DCDC_ALL bit in the main control register.
R2, R1, R0
Selects the output range to be enabled.
R2
R1
R0
Output Range Selected
1
0
4 mA to 20 mA current range
1
0
1
0 mA to 20 mA current range
1
0
0 mA to 24 mA current range
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