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LMH6644-MIL

更新时间: 2024-11-08 02:58:51
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德州仪器 - TI /
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23页 621K
描述
Low-Power, 130-MHz, 75-mA Rail-to-Rail Output Amplifier

LMH6644-MIL 数据手册

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January 9, 2012  
LMH6642/LMH6643/LMH6644  
Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifiers  
General Description  
Features  
The LMH664X family true single supply voltage feedback am-  
plifiers offer high speed (130MHz), low distortion (−62dBc),  
and exceptionally high output current (approximately 75mA)  
at low cost and with reduced power consumption when com-  
pared against existing devices with similar performance.  
(VS = ±5V, TA = 25°C, RL = 2k, AV = +1. Typical values un-  
less specified).  
−3dB BW (AV = +1)  
Supply voltage range  
130MHz  
2.7V to 12.8V  
130V/µs  
Slew rate (Note 8), (AV = −1)  
Supply current (no load)  
Output short circuit current  
Linear output current  
Input common mode volt.  
Output voltage swing  
Input voltage noise (100kHz)  
Input current noise (100kHz)  
THD (5MHz, RL = 2k, VO = 2VPP, AV = +2)  
Settling time  
Input common mode voltage range extends to 0.5V below V  
2.7mA/amp  
+115mA/−145mA  
and 1V from V+. Output voltage range extends to within  
40mV of either supply rail, allowing wide dynamic range es-  
pecially desirable in low voltage applications. The output  
stage is capable of approximately 75mA in order to drive  
heavy loads. Fast output Slew Rate (130V/µs) ensures large  
peak-to-peak output swings can be maintained even at higher  
speeds, resulting in exceptional full power bandwidth of  
40MHz with a 3V supply. These characteristics, along with  
low cost, are ideal features for a multitude of industrial and  
commercial applications.  
±75mA  
0.5V beyond V, 1V from V+  
40mV from rails  
17nV/  
0.9pA/  
−62dBc  
68ns  
Fully characterized for 3V, 5V, and ±5V  
Overdrive recovery  
Output short circuit protected (Note 11)  
No output phase reversal with CMVR exceeded  
Careful attention has been paid to ensure device stability un-  
der all operating voltages and modes. The result is a very well  
behaved frequency response characteristic (0.1dB gain flat-  
ness up the 12MHz under 150load and AV = +2) with  
minimal peaking (typically 2dB maximum) for any gain setting  
and under both heavy and light loads. This along with fast  
settling time (68ns) and low distortion allows the device to  
operate well in ADC buffer, and high frequency filter applica-  
tions as well as other applications.  
100ns  
Applications  
Active filters  
CD/DVD ROM  
ADC buffer amp  
This device family offers professional quality video perfor-  
mance with low DG (0.01%) and DP (0.01°) characteristics.  
Differential Gain and Differential Phase characteristics are al-  
so well maintained under heavy loads (150) and throughout  
the output voltage range. The LMH664X family is offered in  
single (LMH6642), dual (LMH6643), and quad (LMH6644)  
options. See ordering information for packages offered.  
Portable video  
Current sense buffer  
Closed Loop Gain vs. Frequency for Various Gain  
Large Signal Frequency Response  
20018547  
20018535  
© 2012 Texas Instruments Incorporated  
200185 SNOS966O  
www.ti.com  

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