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參數資料
| 型號： | ADD8502 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; No. of Contacts:128; Series:LJT00R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Wall Mount Receptacle; Insert Arrangement:25-35 |
| 中文描述： | 整合式LCD灰度發生器 |
| 文件頁數： | 15/16頁 |
| 文件大小： | 1436K |
| 代理商： | ADD8502 |
REV. 0
ADD8502
–15–
ADD8502-000 MASK OPTION
Table V. Default Power-Up Conditions
DAC Setpoints (0
≤
D
≤
1023)
Decimal Code
Voltage
Unit
Upper DAC
Lower DAC
Resistor Tap Points (0
≤
X
≤
512)
943
40
4.8022
0.0977
V
V
Tap Point
Voltage
Unit
VP0
VP1
VP2
VP3
VP4
VN0
VN1
VN2
VN3
VN4
450
271
203
137
3
31
215
290
367
509
4.2325
2.5878
1.9630
1.3565
0.1252
0.3825
2.0732
2.7624
3.4699
4.7747
V
V
V
V
V
V
V
V
V
V
Supply voltage = 5 V
DAC A
DAC B
VP
0
VP
1
VP
2
VP
3
VP
4
VN
4
VN
3
VN
2
VN
1
VN
0
V
OUTA
V
OUTB
Figrue 6. Tap Point References
Tap point voltages can be derived from the following equation:
X
OUTB
=
+
512
Where
V
OUTA
and
V
OUTB
can be derived from the transfer func-
tions under the Operation Section of the datasheet.
The ADD8502 uses a single resistor string consisting of 512
individual elements. Both sets of reference voltages (V
P0
–V
P4
,
V
N0
–V
N4
) are generated from this single string. Two separate
resistor networks are shown to demonstrate the tap points, which
are changeable by mask option and completely independent of
each other.
Vx
V
V
V
OUTA
OUTB
[
]
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