发明授权
- 专利标题: Comparator with hysteresis in bipolar technology
- 专利标题(中): 双极技术具有迟滞的比较器
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申请号: US518765申请日: 1995-08-24
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公开(公告)号: US5689199A公开(公告)日: 1997-11-18
- 发明人: Ricardo Erckert
- 申请人: Ricardo Erckert
- 申请人地址: DEX Grasbrunn
- 专利权人: SGS-Thomson Microelectronics GmbH
- 当前专利权人: SGS-Thomson Microelectronics GmbH
- 当前专利权人地址: DEX Grasbrunn
- 优先权: DEX4430032.8 19940824
- 主分类号: H03K3/2897
- IPC分类号: H03K3/2897 ; H03F3/345 ; H03F3/45 ; H03K3/0231 ; H03K3/0233 ; H03K5/08 ; H03K5/24 ; H03K17/30 ; H03K5/153 ; H03K3/037
摘要:
A comparator with hysteresis in bipolar technology having a voltage/current converter with a voltage input forming the comparator input connection, and a current output, a bistable current source with a current feeding connection coupled with the current output of the voltage/current converter and a current output connection forming the comparator output, the bistable current source being currentless in a first stable state and consuming current only in the second stable state, the firing current which must be fed to the current feeding connection to switch the bistable current source from the currentless state to the power-consuming state being different from the quenching current which must be fed to the current feeding connection to switch the bistable current source from the power-consuming state to the currentless state, to obtain a hysteresis of the comparator, and all transistors being formed as bipolar transistors. The entire power consumption of such a comparator can be made extremely low in one of its two switching positions.
公开/授权文献
- US4485916A Safety arrangement for precious objects 公开/授权日:1984-12-04