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high voltage swing from lower supplies

2014-11-09 02:12  
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The circuit in Figure 1 uses a fully differential amplifier to offer an answer to this problem. Fully differential amplifiers enable you to deliver an output-voltage swing beyond the rails into the load. One of the common problems in working with operational amplifiers is the limit that the power-supply rails impose. visit page.
This ±15V supply voltage notwithstanding, applications exist that require a higher swing range beyond the power-supply limits. Typical ±15V operational amplifiers are seldom optimized for rail-to-rail operation, and their useful output-voltage range visit page.