参数资料
型号: AD5544BCPZ-RL7
厂商: Analog Devices Inc
文件页数: 8/24页
文件大小: 0K
描述: IC DAC 16BIT SER QUAD 32-LFCSP
标准包装: 1,500
设置时间: 900ns
位数: 16
数据接口: 串行,SPI?
转换器数目: 4
电压电源: 双 ±
功率耗散(最大): 1.25mW
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 32-WFQFN 裸露焊盘,CSP
供应商设备封装: 32-LFCSP(5x5)
包装: 带卷 (TR)
输出数目和类型: 4 电流,单极;4 电流,双极
AD5544/AD5554
Data Sheet
Rev. G | Page 16 of 24
TRUTH TABLES
Table 8. AD55441 Control Logic Truth Table
CS
CLK
LDAC
RS
MSB2
Serial Shift Register Function3
Input Register Function
DAC Register
High
X
High
X
No effect
Latched
Low
High
X
No effect
Latched
Low
High
X
Shift register data advanced one bit
Latched
Low
High
X
No effect
Latched
Low
High
X
No effect
Selected DAC updated with
current shift register contents4
Latched
High
X
Low
High
X
No effect
Latched
Transparent
High
X
High
X
No effect
Latched
High
X
High
X
No effect
Latched
High
X
High
Low
0
No effect
Latched data = 0x0000
High
X
High
Low
High
No effect
Latched data = 0x8000
1
For the AD5544, data appears at the SDO pin 19 clock pulses after input at the SDI pin.
2
X = don’t care.
3
+is a positive logic transition.
4
At power-on, both the input register and the DAC register are loaded with all 0s.
Table 9. AD55541 Control Logic Truth Table
CS
CLK
LDAC
RS
MSB2
Serial Shift Register Function3
Input Register Function3
DAC Register
High
X
High
X
No effect
Latched
Low
L
High
X
No effect
Latched
Low
High
X
Shift register data advanced one bit
Latched
Low
High
X
No effect
Latched
Low
High
X
No effect
Selected DAC updated with
current shift register contents4
Latched
High
X
Low
High
X
No effect
Latched
Transparent
High
X
High
X
No effect
Latched
High
X
High
X
No effect
Latched
High
X
High
Low
0
No effect
Latched data = 0x0000
High
X
High
Low
High
No effect
Latched data = 0x2000
1
For the AD5554, data appears at the SDO pin 17 clock pulses after input at the SDI pin.
2
X = don’t care.
3
+is a positive logic transition.
4
At power-on, both the input register and the DAC register are loaded with all 0s.
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