peculiarity
（V S = 2.7V，T = 25 ° C，R L = 1K 
to V + / 2, A V = 1. unless specified typical values).
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- 3dB bandwidth
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55MHz
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Supply voltage range
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2.5V to 12V
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Swing rate
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22V/μs |
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Supply current
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650μA/channel |
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Output short-circuit current
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42 mAh
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Linear output current
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± 20mA
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Input common mode voltage
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0.3V over-orbital
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Output voltage swing
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From the rail is 20mV
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Input voltage noise
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17nV / |
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Input current noise
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0.75pA / |
illustrate
The LMH™6645 (single) and LMH6646 (dual), rail-to-rail input and output voltage feedback amplifiers provide micropower removal high-speed (55MHz), low-voltage operation (2.7V) shut-off function (LMH6647 single).
The input common-mode voltage range is supplied from 0.3V or more, increasing ease of use where the device was previously second only to the device for a wide variety of applications. The output voltage range is 20mV for any rail, especially in the dynamic range of low voltage applications. Even at a low supply of 650μA/amplifier current, the output current capability is maintained at a decent drive heavy load ± 20mA current. Important device parameters such as bandwidth, slew rate and output current remain relatively independent of the operating supply voltage by a combination of process improvement and design architecture.
In portable applications, LMH6647 provide shutdown capability while maintaining a shutdown current of less than 50μA. These two on- and shutdown characteristics and the performance during transition with minimal output fluctuations. This makes it possible to use some in power-saving mode, as well as in multiplexing applications. (SOT23, MSOP-8, and SO-8) micro-packaging measures to mitigate the invaluable adoption of board area in applications for these low-power, high-speed devices.
apply
- Active filter
- High-speed portable device
- (LMH6647) Multiplexing applications
- Current sense buffer
- High-speed sensor amplifier
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