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參數(shù)資料
| 型號： | AD8381 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Fast, High Voltage Drive, 6-Channel Output DecDriverTM Decimating LCD Panel Driver |
| 中文描述： | 快速，高電壓驅(qū)動器，6通道輸出DecDriverTM元氣，液晶面板驅(qū)動 |
| 文件頁數(shù)： | 14/16頁 |
| 文件大?。?/td> | 528K |
| 代理商： | AD8381 |
REV. 0
AD8381
–14–
LAYOUT CONSIDERATIONS
The AD8381 is a mixed-signal, high speed, very accurate
device. In order to realize its specifications, it is essential to use
a properly designed printed circuit board.
Layout and Grounding
The analog outputs and the digital inputs of the AD8381 are
pinned out on opposite sides of the package. When laying out
the circuit board, keep these sections separate from each other
to minimize crosstalk and noise and the coupling of the digital
input signals into the analog outputs.
All signal trace lengths should be made as short and direct as
possible to prevent signal degradation due to parasitic effects.
Note that digital signals should not cross or be routed near
analog signals.
It is imperative to provide a solid analog ground plane under
and around the AD8381. All of the ground pins of the part
should be connected directly to the ground plane with no extra
signal path length. For conventional operation this includes the
pins DGND, AGNDDAC, AGNDBIAS, AGND0, AGND1, 2,
AGND3, 4, and AGND5. The return traces for any of the
signals should be routed close to the ground pin for that section
to prevent stray signals from coupling into other ground pins.
Power Supply Bypassing
All power supply and reference pins of the AD8381 must be
properly bypassed to the analog ground plane for optimum
performance.
All analog supply pins may be connected directly to an analog
supply plane located as close to the part as possible. A 0.1
μ
F
chip capacitor should be placed as close to each analog supply
pin as possible and connected directly between each analog
supply pin and the analog ground plane.
A minimum of 47
μ
F tantalum capacitor should be placed near
the analog supply plane and connected directly between the
supply and analog ground planes.
A minimum of 10
μ
F tantalum capacitor should be placed near the
digital supply pin and connected directly to the analog ground
plane. A 0.1
μ
F chip capacitor should be connected between the
digital supply pin and the analog ground.
VREFHI, VMID, VREFLO Reference Distribution
To ensure well-matched video outputs, all AD8381s must oper-
ate from equal reference voltages.
Each reference voltage should be distributed to each AD8381
directly from the source of the reference voltage with approxi-
mately equal trace lengths.
A 0.1
μ
F chip capacitor should be placed as close to each refer-
ence input pin as possible and directly connected between the
reference input pin and the analog ground plane.
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
DB8
DB9
A
V
C
X
S
V
A
V
D
D
I
B
E
R
A
A
S
1
1
1
1
1
1
2
2
2
2
VID0
VID1
AVCC0,1
VID2
AGND1,2
VID3
AVCC2,3
VID4
AGND3,4
VID5
AVCC4,5
AGND5
12
11
10
9
8
7
6
5
4
3
2
1
26
28
30
32
34
36
4
4
4
4
4
4
4
3
3
A
TO ANALOG GROUND PLANE
TO ANALOG SUPPLY PLANE
Figure 11. AD8381 Recommended Bypassing
相關PDF資料 |
PDF描述 |
|---|---|
| AD8381AST | Fast, High Voltage Drive, 6-Channel Output DecDriverTM Decimating LCD Panel Driver |
| AD8381AST-REEL | Fast, High Voltage Drive, 6-Channel Output DecDriverTM Decimating LCD Panel Driver |
| AD8390 | Low Power, High Output Current Differential Amplifier |
| AD8390ACP-EVAL | Low Power, High Output Current Differential Amplifier |
| AD8390ACP-REEL | Low Power, High Output Current Differential Amplifier |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD8381AST | 制造商:AD 制造商全稱:Analog Devices 功能描述:Fast, High Voltage Drive, 6-Channel Output DecDriverTM Decimating LCD Panel Driver |
| AD8381AST-REEL | 制造商:AD 制造商全稱:Analog Devices 功能描述:Fast, High Voltage Drive, 6-Channel Output DecDriverTM Decimating LCD Panel Driver |
| AD8381-EB | 制造商:Analog Devices 功能描述:LCD DRVR 9 TO 18V - Bulk |
| AD8381JST | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| AD8381JSTZ | 制造商:Analog Devices 功能描述: |
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