This sensor is basically a simple IR transceiver that generates IR modulated signal at 10kHz, then amplifies the reflected signal with a single op amp (MAX4230), which is also configured as a 2nd-order bandpass filter to demodulate the 10kHz IR signal.

This article discusses rail-to-rail op amps, and explains why some inputs and outputs can be less than, nearly, or slightly more than the power rails.

The SPICE macro models for Microchip’s operational amplifiers (op amps) aid in the design and analysis of various circuits by allowing for detailed simulation of the circuit being designed.

The MCP606/7/8/9 family of operational amplifiers (op amps)are unity-gain stable with low offset voltage (250 µV, maximum).

This article will tackle the effects encountered by the Printed Circuit Board or PCB in high Direct Current precision op amp circuits.

This article will feature the possible problems that are encountered by designers when using operational amplifiers that use capacitive drive loads that produce undesired results.

This module will introduce the technology of voltage feedback operational amplifier and current feedback operational amplifier.