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LMH6612

更新时间： 2024-09-23 05:42:23
品牌 Logo 应用领域
英特矽尔 - INTERSIL 放大器
页数 文件大小 规格书
30页 1445K
描述
PowerWise® Single Supply 345 MHz Rail-to-Rail Output Amplifiers

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December 18, 2007  
LMH6611/LMH6612  
PowerWise® Single Supply 345 MHz Rail-to-Rail Output  
Amplifiers  
General Description  
Features  
The LMH6611 (single, with shutdown) and LMH6612 (dual)  
are 345 MHz rail-to-rail output amplifiers consuming just 3.2  
mA of quiescent current per channel and designed to deliver  
high performance in power conscious single supply systems.  
The LMH6611 and LMH6612 have precision trimmed input  
offset voltages with low noise and low distortion performance  
as required for high accuracy video, test and measurement,  
and communication applications. The LMH6611 and  
LMH6612 are members of the PowerWise family and have an  
exceptional power-to-performance ratio.  
VS = 5V, RL = 1 kΩ, TA = 25°C and AV = +1, unless otherwise  
specified.  
Operating voltage range  
Supply current per channel  
Small signal bandwidth  
Open loop gain  
Input offset voltage  
Slew rate  
2.7V to 11V  
3.2 mA  
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345 MHz  
103 dB  
0.022 mV  
460 V/µs  
45 MHz  
0.1 dB bandwidth  
Settling time to 0.1%  
Settling time to 0.01%  
SFDR (f = 100 kHz, AV = 2, VOUT = 2 VPP  
Low voltage noise  
Output current  
CMVR  
67 ns  
100 ns  
With a trimmed input offset voltage of 0.022 mV and a high  
open loop gain of 103 dB the LMH6611 and LMH6612 meet  
the requirements of DC sensitive high speed applications  
such as low pass filtering in baseband I and Q radio channels.  
These specifications combined with a 0.01% settling time of  
)
102 dBc  
10 nV/√Hz  
±100 mA  
−0.2V to 3.8V  
100 ns, a low noise of 10 nV/  
and better than 102 dBc  
SFDR at 100 kHz make these amplifiers particularly suited to  
driving 10, 12 and 14-bit high speed ADCs. The 45 MHz 0.1  
dB bandwidth (AV = 2) driving 2 VPP into 150Ω allows the am-  
plifiers to be used as output drivers in 1080i and 720p HDTV  
applications.  
Rail-to-Rail output  
−40°C to +125°C temperature range  
Applications  
ADC driver  
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The input common mode range extends from 200 mV below  
the negative supply rail up to 1.2V from the positive rail. On a  
single 5V supply with a ground terminated 150Ω load the out-  
put swings to within 55 mV of the ground, while a mid-rail  
terminated 1 kΩ load will swing to 77 mV of either rail.  
The amplifiers will operate on a 2.7V to 11V single supply or  
±1.35V to ±5.5V split supply. The LMH6611 single is available  
in 6-Pin TSOT23 and has an independent active low disable  
pin which reduces the supply current to 120 µA. The  
LMH6612 is available in 8-Pin SOIC. Both the LMH6611 and  
LMH6612 are available in −40°C to +125°C extended indus-  
trial temperature grade.  
DAC buffer  
Active filters  
High speed sensor amplifier  
Current sense amplifier  
1080i and 720p analog video amplifier  
STB, TV video amplifier  
Video switching and muxing  
Typical Application  
30033629  
PowerWise® is a registered trademark of National Semiconductor.  
WEBENCH® is a registered trademark of National Semiconductor Corporation.  
© 2007 National Semiconductor Corporation  
300336  
www.national.com  
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