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參數(shù)資料
| 型號(hào)： | MSA260 |
| 廠商： | Apex Microtechnology Corporation |
| 英文描述： | PULSE WIDTH MODULATION AMPLIFIER |
| 中文描述： | 脈寬調(diào)制放大器 |
| 文件頁(yè)數(shù)： | 5/5頁(yè) |
| 文件大?。?/td> | 402K |
| 代理商： | MSA260 |
APEX MICROTECHNOLOGY CORPORATION TELEPHONE (520) 690-8600 FAX (520) 888-3329 ORDERS (520) 690-8601 EMAIL prodlit@apexmicrotech.com
This data sheet has been carefully checked and is believed to be reliable, however, no responsibility is assumed for possible inaccuracies or omissions. All specifications are subject to change without notice.
MSA260U REV B JULY 2004 2004 Apex Microtechnology Corp.
5
OPERATING
CONSIDERATIONS
MSA260
CALCULATING INTERNAL POWER DISSIPATION
Detailed calculation of internal power dissipation is complex
but can be approximated with simple equations. Conduction
loss is given by:
W = I * 2.5 + I
2
* 0.095
where I = output current
Switching loss is given by:
W = 0.00046 * I * Vsupply * Fswitching
Combine these two losses to obtain total loss. Calculate
heatsink ratings and case temperatures as would be done for
a linear amplifier. For calculation of junction temperatures,
assume half the loss is dissipated in each of two switches:
Tj = Ta + Wtotal * Rhs + 1/2Wtotal * Rjc, where:
Rhs = heatsink rating
Rjc = junction-to-case thermal resistance of the
MSA260.
The SOA typical performance graphs below show perfor-
mance with the MSA260 mounted with thermal grease on the
Apex HS26. The Free Air graph assumes vertical orientation
of the heatsink and no obstruction to air flow in an ambient
temperature of 30°C. The other two graphs show performance
with two levels of forced air. Note that air velocity is given
in linear feet per minute. As fans are rated in cubic delivery
capability, divide the cubic rating by the square area this air
flows through to find velocity. As fan delivery varies with static
pressure, these calculations are approximations, and heatsink
ratings vary with amount of power dissipated, there is no sub-
stitute for temperature measurements on the heatsink in the
center of the amplifier footprint as a final check.
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| MSA260KC | 功能描述:特殊用途放大器 Pulse Width Modulation 450V 20A RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| MSA-2743 | 制造商:AGILENT 制造商全稱(chēng):AGILENT 功能描述:Cascadable Silicon Bipolar Gain Block MMIC Amplifier |
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| MSA-2743-TR1 | 制造商:AGILENT 制造商全稱(chēng):AGILENT 功能描述:Cascadable Silicon Bipolar Gain Block MMIC Amplifier |
| MSA-2743-TR2 | 制造商:AGILENT 制造商全稱(chēng):AGILENT 功能描述:Cascadable Silicon Bipolar Gain Block MMIC Amplifier |
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