Successive approximation a-d converter

  
A bipolar input, high speed A/D converter uses two AM25L03s to form a 14-bit successive approximation register. The comparator is a two-stage circuit with an HA2605 front-end amplifier used to reduce settling time problems at the summing node
Successive approximation a-d converter - schematic

Careful offset-nulling of this amplifier is needed.




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