Tiny amplifiers drive heavy capacitive loads at speed
Keegan Leary and Brian Hamilton
Abstract
The 400MHz LT1395/LT1396/LT1397 family of current feedback amplifiers, which are tiny amplifiers that drive heavy capacitive loads at speed, are described.
Keywords
Current feedback amplifiers
LT1395
LT1396
LT1397
Introduction
Parasitic capacitance lurks behind every corner of an electronic circuit. FET gates, cabling, ground and power planes all add to the farad bottom line. When the capacitive load gets heavy in high speed circuits, careful op amp selection is paramount for optimizing slew rate, current output capability, power dissipation, and feedback loop stability.
Demanding circuit requirements
For example, consider ...
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