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參數(shù)資料
| 型號(hào)： | LMH6678 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Low Power 2-Channel Central-Office xDSL Driver |
| 中文描述： | 低功耗雙通道中環(huán)辦事處的xDSL驅(qū)動(dòng) |
| 文件頁(yè)數(shù)： | 16/17頁(yè) |
| 文件大?。?/td> | 1792K |
| 代理商： | LMH6678 |
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Application Notes
(Continued)
HIGH SPEED DRIVER LAYOUT GUIDELINES
The LMH6678 is a high performance differential line ampli-
fier that requires proper layout for best performance.
Keep power-supply leads as short as possible. This will
keep inductance low and resistive losses at a minimum.
Proper power-supply bypassing with low ESR capacitors
is essential to achieve good performance. A parallel com-
bination of small (around 0.1 μF) ceramic and bigger (6.8
μF) tantalum bypass capacitors will provide low and im-
pedance over a wide frequency rage.
Bypass capacitor should be placed as close as possible,
limited by pick and place machine requirement, to the
power-supply pins of the LMH6678 (ceramic cap first and
then tantalum cap).
PCB traces conducting high currents, such as from out-
put to load or from power-supply connector to the power-
supply pins of the LMH6678 should be kept as wide and
short as possible to minimize inductance and resistive
loss.
The six holes in the landing pattern for the LMH6678 are
for the thermal vias that connect the thermal pad of LLP
package to the internal/external ground plane on the
PCB.
For detail information on the LLP package including thermal
modeling considerations and prepared procedures, please
see National Semiconductor.
"Applications Note 1187: Leadless Leadframe Package
(LLP)" located at www.national.com.
20084048
FIGURE 9. Via Connection Not Recommended Under
the Thermal Pad
20084049
FIGURE 10. Via Connection Recommended For Use in
Thermal Pad
L
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMH6678B WAF | 制造商:Texas Instruments 功能描述: |
| LMH6678LQ | 功能描述:IC DRIVER XDSL 2CH LO PWR 24-LLP RoHS:否 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 放大器類(lèi)型:電壓反饋 電路數(shù):4 輸出類(lèi)型:滿擺幅 轉(zhuǎn)換速率:33 V/µs 增益帶寬積:20MHz -3db帶寬:30MHz 電流 - 輸入偏壓:2nA 電壓 - 輸入偏移:3000µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:30mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:14-SOIC 包裝:帶卷 (TR) |
| LMH6678LQX | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Low Power 2-Channel Central-Office xDSL Driver |
| LMH6682 | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:190MHz Single Supply, Dual and Triple Operational Amplifiers |
| LMH6682MA | 制造商:Texas Instruments 功能描述:OP Amp Dual Volt Fdbk ±6V/12V 8-Pin SOIC N Rail 制造商:Texas Instruments 功能描述:AMP, VIDEO DUAL, SMD, SOIC8, 6682 |
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