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參數(shù)資料
| 型號(hào)： | AD7628TE |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | CMOS Dual 8-Bit Buffered Multiplying DAC |
| 中文描述： | DUAL, PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, CQCC20 |
| 封裝： | CERAMIC, LCC-20 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 193K |
| 代理商： | AD7628TE |
AD7628
–5–
REV. A
T able I. Unipolar Binary Code T able
DAC Latch Contents
MSB
LSB
Analog Output
(DAC A or DAC B)
1 1 1 1 1 1 1 1
±
V
IN
255
256
±
V
IN
0
1 0 0 0 0 0 0 1
±
V
IN
129
256
1 0 0 0 0 0 0 0
±
V
IN
128
256
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
NOT E: 1 LSB = (2
–8
)(V
IN
) =
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.
T able II. Bipolar (Offset Binary) Code T able
DAC Latch Contents
MSB
LSB
Analog Output
(DAC A or DAC B)
1 1 1 1 1 1 1 1
+
V
IN
127
128
1
128
1 0 0 0 0 0 0 1
+
V
IN
1 0 0 0 0 0 0 0
0
0 1 1 1 1 1 1 1
±
V
IN
1
128
127
128
0 0 0 0 0 0 0 1
±
V
IN
0 0 0 0 0 0 0 0
±
V
IN
128
128
NOT E: 1 LSB = (2
–7
)(V
IN
) =
1
128
V
IN
(
)
T able III. Recommended T rim Resistor Values
T rim
Resistor
K/B/T
R1; R3
R2; R4
500
150
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