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Ratiometric temperature stable current reference

Ratiometric temperature stable current reference

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© The Institution of Electrical Engineers
Published

Current-mode integraed circuit design leads to the use of a current reference achieving good temperature compensation. A novel circuit is described, which has good performance based on a ratiometric expression that is easily reproduced. As a bonus, the circuit acts as a PTAT (proportional to absolute temperature) reference without any structural change.

Inspec keywords: bipolar transistor circuits; stability; compensation; reference circuits

Other keywords: current reference; PTAT reference; ratiometric temperature stability; proportional to absolute temperature; temperature compensation

Subjects: Power electronics, supply and supervisory circuits

References

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      • T. Vanisri , C. Toumazou . Wideband and high gain currentfeedback opamp. Electron. Lett. , 1705 - 1707
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      • The staff of Ferranti Interdesign: ‘301 analog IC design’. Ferranti Interdesign Inc.
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      • N.C. Battersby , C. Toumazou , J.B. Hughes , R.S. Soin , F. Maloberti , J. Franca . (1991) , Analogue-digital ASICs, circuit techniques, design tools and applications.
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      • C. Toumazou , F. Lidgey , D. Haigh . (1990) , Analogue IC design: the current mode approach.
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