参数资料
型号: EVAL-AD5392EBZ
厂商: Analog Devices Inc
文件页数: 18/44页
文件大小: 0K
描述: BOARD EVAL FOR AD5392
产品培训模块: DAC Architectures
标准包装: 1
DAC 的数量: 16
位数: 14
采样率(每秒): 125k
数据接口: 串行
设置时间: 8µs
DAC 型: 电压
工作温度: -40°C ~ 85°C
已供物品: 板,CD
已用 IC / 零件: AD5392
Data Sheet
AD5390/AD5391/AD5392
Rev. E | Page 25 of 44
INTERFACES
The AD5390/AD5391/AD5392 contain a serial interface that
can be programmed to be DSP-, SPI-, and MICROWIRE-
compatible, or I2C-compatible. The SPI/I2C pin is used to select
the interface mode.
To minimize both the power consumption of the device and the
on-chip digital noise, the interface fully powers up only when the
device is being written to, that is, on the falling edge of SYNC.
DSP-, SPI-, AND MICROWIRE-COMPATIBLE SERIAL
INTERFACE
The serial interface can be operated with a minimum of three
wires in standalone mode or four wires in daisy-chain mode.
Daisy-chaining allows many devices to be cascaded together to
increase system channel count. The SPI/I2C pin is tied to a
Logic 1 pin to configure this mode of operation. The serial
interface control pins are described in Table 17.
Table 17. Serial Interface Control Pins
Pin
Description
SYNC, DIN, SCLK
Standard 3-wire interface pins.
DCEN
Selects standalone mode or daisy-chain mode.
SDO
Data out pin for daisy-chain mode.
Figure 2 to Figure 4 show timing diagrams for a serial write to
the AD5390/AD5391/AD5392 in both standalone and daisy-
chain mode. The 24-bit data-word format for the serial interface
is shown in Table 18 to Table 20. Descriptions of the bits follow
Table 18. AD5390 16-Channel, 14-Bit DAC Serial Input Register Configuration
MSB
LSB
A/B
R/W
0 0
A3
A2
A1
A0
REG1
REG0
DB13
DB12
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1 DB0
Table 19. AD5391 16-Channel, 12-Bit DAC Serial Input Register Configuration
MSB
LSB
A/B
R/W 0 0
A3 A2 A1
A0 REG1
REG0
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
X
Table 20. AD5392 8-Channel, 14-Bit DAC Serial Input Register Configuration
MSB
LSB
A/B
R/W 0 0
0
A2
A1
A0
REG1
REG0
DB13
DB12
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
Table 21. Serial Input Register Configuration Bit Descriptions
Bit
Description
A/B
When toggle mode is enabled, this bit selects whether the data write is to the A or B register. With toggle mode disabled, this
bit should be set to zero to select the A data register.
R/W
The read or write control bit.
A3 to A0
Used to address the input channels.
REG1 and
REG0
Select the register to which data is written, as outlined in Table 10.
DB13 to
DB0
Contain the input data-word.
X
Don’t care condition.
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