NASA NTRS · 20090043054
Wide-temperature integrated operational amplifier
Abstract
The present invention relates to a reference current circuit. The reference circuit comprises a low-level current bias circuit, a voltage proportional-to-absolute temperature generator for creating a proportional-to-absolute temperature voltage (VPTAT), and a MOSFET-based constant-IC regulator circuit. The MOSFET-based constant-IC regulator circuit includes a constant-IC input and constant-IC output. The constant-IC input is electrically connected with the VPTAT generator such that the voltage proportional-to-absolute temperature is the input into the constant-IC regulator circuit. Thus the constant-IC output maintains the constant-IC ratio across any temperature range.
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Mojarradi, Mohammad, Levanas, Greg, Chen, Yuan, Cozy, Raymond S., Greenwell, Robert, Terry, Stephen, Blalock, Benjamin J.. 2009-04-07. Wide-temperature integrated operational amplifier. https://ntrs.nasa.gov/citations/20090043054
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