Patent ID: 7218167
Filing Date: 2007-05-15
Classification: G05F

Abstract:
1. Device for generation of a reference electrical voltage comprising: a first current generator outputting a current proportional to temperature, wherein the said first current generator comprises at least one operational amplifier and two branches in parallel, a first branch comprising a first current source and a first bipolar transistor, and a second branch comprising a second current source, a first resistance and a second bipolar transistor; a second current generator outputting a current conversely proportional to temperature; means of summating the said currents so as to obtain a voltage independent of the said temperature; and means of reducing dependence of the current circulating in the said first branch on the value of the said first resistance, the said reduction means comprising at least one second resistance with a non-adjustable value and mounted in series between the said second current source and a power supply of said device.