参数资料
型号: AD7628KRZ
厂商: Analog Devices Inc
文件页数: 5/8页
文件大小: 0K
描述: IC DAC 8BIT DUAL W/BUFF 20-SOIC
产品培训模块: Data Converter Fundamentals
DAC Architectures
标准包装: 37
设置时间: 400ns
位数: 8
转换器数目: 2
电压电源: 单电源
功率耗散(最大): 450mW
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-SOIC(0.295",7.50mm 宽)
供应商设备封装: 20-SOIC W
包装: 管件
输出数目和类型: 2 电流,单极;2 电流,双极
采样率(每秒): 2.9M
AD7628
–5–
REV. A
Table I. Unipolar Binary Code Table
DAC Latch Contents
Analog Output
MSB
LSB
(DAC A or DAC B)
1 1 1 1 1 1 1 1
–V
IN
255
256
1 0 0 0 0 0 0 1
–V
IN
129
256
1 0 0 0 0 0 0 0
–V
IN
128
256
= –
V
IN
2
0 1 1 1 1 1 1 1
–V
IN
127
256
0 0 0 0 0 0 0 1
–V
IN
1
256
0 0 0 0 0 0 0 0
–V
IN
0
256
= 0
NOTE: 1 LSB = (2–8)(VIN) =
1
256
V
IN
()
Figure 4. Dual DAC Unipolar Binary Operation (2 Quadrant Multiplication). See Table I.
Figure 5. Dual DAC Bipolar Operation (4 Quadrant Multiplication). See Table II.
Table II. Bipolar (Offset Binary) Code Table
DAC Latch Contents
Analog Output
MSB
LSB
(DAC A or DAC B)
1 1 1 1 1 1 1 1
+V
IN
127
128
1 0 0 0 0 0 0 1
+V
IN
1
128
1 0 0 0 0 0 0 0
0
0 1 1 1 1 1 1 1
–V
IN
1
128
0 0 0 0 0 0 0 1
–V
IN
127
128
0 0 0 0 0 0 0 0
–V
IN
128
NOTE: 1 LSB = (2
–7)(V
IN) =
1
128
V
IN
()
Table III. Recommended Trim Resistor Values
Trim
Resistor
K/B/T
R1; R3
500
R2; R4
150
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AD7628KRZ 制造商:Analog Devices 功能描述:IC 8-BIT DAC
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