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參數(shù)資料
| 型號： | AD8383 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Low Cost 10-Bit, 6-Channel Output Decimating LCD DecDriver |
| 中文描述： | 低成本10位，6通道輸出液晶DecDriver元氣 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大?。?/td> | 376K |
| 代理商： | AD8383 |
AD8383
THERMAL VIA STRUCTURE DESIGN
Effective heat transfer from the top to the inner and bottom
layers of the PCB requires thermal vias incorporated into the
thermal pad design. Thermal performance increases logarithmi-
cally with the number of vias, as shown in Figure 12. With the
AD8383 on a standard JEDEC PCB, θ
JA
reaches its specified
value when a total of 16 vias are used. At a via count above 36,
θ
JA
approaches its optimum value as the slope of the curve
approaches zero.
Rev. 0 | Page 11 of 16
22
24
26
28
30
32
θ
J
NUMBER OF VIAS
10
0
20
30
0
40
Figure 12. Thermal Performance vs. Number of Vias (on a JEDEC PCB)
Near optimum thermal performance of production PCBs is
attained when the number of vias is at least 36.
SOLDER MASKING
To minimize the formation of solder voids due to solder flowing
into the via holes (solder wicking), the via diameter should be
small. Solder masking of the via holes on the top layer of the
PCB plugs the via holes, inhibiting solder flow into the holes. To
optimize the thermal pad coverage, the solder mask diameter
should be no more than 0.1 mm larger than the via diameter.
REFERENCE PCB DESIGN
The top copper layer is shown in Figure 13.
0
7
7 mm
Figure 13. Recommended PCB Landing
The bottom thermal pad forms AVCC plane.
Thermal Pads
Top PCB Layer:
Bottom PCB Layer:
5.25 mm × 5.25 mm
5.25 mm × 5.25 mm
Thermal via structure
Diameter:
Number of vias:
Via Grid Pitch:
0.25 mm
41
0.5 mm
Miscellaneous
Perimeter Pads:
Solder Mask Swell:
0.5 mm × 0.25 mm
0.02 mm
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD8383ACPZ | 功能描述:IC DECIMATING LCD DRIVER 48LFCSP RoHS:是 類別:集成電路 (IC) >> PMIC - 顯示器驅(qū)動器 系列:DecDriver™ 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 顯示器類型:真空熒光 (VF) 配置:5 x 7（矩陣） 接口:串行 數(shù)字或字符:- 電流 - 電源:3.5mA 電源電壓:2.7 V ~ 3.6 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:16-SSOP（0.154"，3.90mm 寬） 供應商設備封裝:16-QSOP 包裝:帶卷 (TR) |
| AD8384 | 制造商:AD 制造商全稱:Analog Devices 功能描述:10-Bit, 6-Channel Decimating LCD DecDriver-R with Level Shifters |
| AD8384ASVZ | 功能描述:IC DRIVER LCD 6CH 10BIT 80-TQFP RoHS:是 類別:集成電路 (IC) >> PMIC - 顯示器驅(qū)動器 系列:DecDriver™ 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 顯示器類型:真空熒光 (VF) 配置:5 x 7（矩陣） 接口:串行 數(shù)字或字符:- 電流 - 電源:3.5mA 電源電壓:2.7 V ~ 3.6 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:16-SSOP（0.154"，3.90mm 寬） 供應商設備封裝:16-QSOP 包裝:帶卷 (TR) |
| AD8385 | 制造商:AD 制造商全稱:Analog Devices 功能描述:10-Bit, 12-Channel Decimating LCD DECDRIVER with Level Shifters |
| AD8385ASVZ | 制造商:Analog Devices 功能描述: |
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