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| 型号： | THS7002IPWP |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO28 |
| 封装： | GREEN, PLASTIC, HTSSOP-28 |
| 文件页数： | 22/41页 |
| 文件大小： | 1203K |
| 代理商： | THS7002IPWP |
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THS7001, THS7002
70MHz PROGRAMMABLEGAIN AMPLIFIERS
SLOS214C OCTOBER 1998 REVISED MARCH 2007
29
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
general PowerPAD design considerations
Although there are many ways to properly heatsink this device, the following steps illustrate the recommended
approach.
THS7002
Thermal pad area (120 mils x 300 mils)
(3,05 mm x 7,62 mm)
with 10 vias
Via diameter = 13 mils (0,33 mm)
THS7001
Thermal pad area (120 mils x 250 mils)
(3,05 mm x 6,35 mm)
with 8 vias
Via diameter = 13 mils (0,33 mm)
Figure 68. PowerPAD PCB Etch and Via Pattern
1.
Prepare the PCB with a top side etch pattern as shown in Figure 68. There should be etch for the leads as
well as etch for the thermal pad.
2.
Place the thermal transfer holes in the area of the thermal pad. These holes should be 13 mils (0,33 mm)
in diameter. They are kept small so that solder wicking through the holes is not a problem during reflow.
3.
Additional vias may be placed anywhere along the thermal plane outside of the thermal pad area. This helps
dissipate the heat generated by the IC. These additional vias may be larger than the 13-mil (0,33 mm)
diameter vias directly under the thermal pad. They can be larger because they are not in the thermal pad
area to be soldered so that wicking is not a problem.
4.
Connect all holes to the internal ground plane.
5.
When connecting these holes to the ground plane, do not use the typical web or spoke via connection
methodology. Web connections have a high thermal resistance connection that is useful for slowing the heat
transfer during soldering operations. This makes the soldering of vias that have plane connections easier.
In this application, however, low thermal resistance is desired for the most efficient heat transfer. Therefore,
the holes under the IC package should make their connection to the internal ground plane with a complete
connection around the entire circumference of the plated-through hole.
6.
The top-side solder mask should leave the terminals of the package and the thermal pad area with its
thermal transfer holes exposed. The bottom-side solder mask should cover the thermal transfer holes of
the thermal pad area. This prevents solder from being pulled away from the thermal pad area during the
reflow process.
7.
Apply solder paste to the exposed thermal pad area and all of the IC terminals.
8.
With these preparatory steps in place, the THS7001PWP/THS7002PWP IC is simply placed in position and
run through the solder reflow operation as any standard surface-mount component. This results in a part
that is properly installed.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| THS7002IPWPG4 | 功能描述:特殊用途放大器 70-MHz Hi-Spd Dual Prgrmbl-Gain Amp RoHS:否 制造商:Texas Instruments 通道数量:Single 共模抑制比（最小值）: 输入补偿电压: 工作电源电压:3 V to 5.5 V 电源电流:5 mA 最大功率耗散: 最大工作温度:+ 70 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-20 封装:Reel |
| THS7002IPWPR | 功能描述:运算放大器 - 运放 70-MHz Programmable- Gain Dual RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| THS7002PWP | 制造商:TI 制造商全称:Texas Instruments 功能描述:70-MHz PROGRAMMABLE-GAIN AMPLIFIERS |
| THS7102 | 制造商:TI 制造商全称:Texas Instruments 功能描述:ADSL (POTS) CENTRAL OFFICE LINE INTERFACE DRIVER/RECEIVER |
| THS7103 | 制造商:TI 制造商全称:Texas Instruments 功能描述:ADSL (ISDN) CENTRAL OFFICE LINE INTERFACE DRIVER/RECEIVER |
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