发明授权
- 专利标题: Supply invariant bandgap reference system
- 专利标题(中): 提供不变带隙参考系
-
申请号: US12894472申请日: 2010-09-30
-
公开(公告)号: US08536854B2公开(公告)日: 2013-09-17
- 发明人: John L. Melanson , Prashanth Drakshapalli , Larry L. Harris
- 申请人: John L. Melanson , Prashanth Drakshapalli , Larry L. Harris
- 申请人地址: US TX Austin
- 专利权人: Cirrus Logic, Inc.
- 当前专利权人: Cirrus Logic, Inc.
- 当前专利权人地址: US TX Austin
- 代理机构: Terrile, Cannatti, Chambers & Holland LLP
- 代理商 Kent B. Chambers
- 主分类号: G05F3/28
- IPC分类号: G05F3/28
摘要:
An electronic reference-signal generation system includes a supply invariant bandgap reference system that generates one or more bandgap reference signals that are substantially unaffected by bulk error currents. In at least one embodiment, the bandgap reference generates a substantially invariant bandgap reference signals for a range of direct current (DC) supply voltages. Additionally, in at least one embodiment, the bandgap reference system provides substantially invariant bandgap reference signals when the supply voltage varies due to alternating current (AC) voltages. In at least one embodiment, the bandgap reference system generates a bandgap reference voltage VBG, a “proportional to absolute temperature” (PTAT) current (“iPTAT”) and a “zero dependency on absolute temperature” (ZTAT) current (“iZTAT”) that are substantially unaffected by variations in the supply voltage and unaffected by a bulk error current.
公开/授权文献
- US20120081099A1 SUPPLY INVARIANT BANDGAP REFERENCE SYSTEM 公开/授权日:2012-04-05