发明名称 |
COMBINED BIAS SUPPLY AND POWER SHUT-OFF CIRCUIT |
摘要 |
A microcircuit bias-current supply in a wristwatch-pager. An FM-radio receiver in a microcircuit paging device operates intermittently with a short on-time and long off-time to reduce power consumption and preserve battery life. Ths bias-supply circuit distributes predetermined bias currents to a plurality of functional circuit areas of the microcircuit die, the bias currents being disabled during off-time of the receiver such that the current drain of the entire microcircuit is virtually zero, being in the range of nanoamps. The inefficiencies and disadvantages of a series switch to switch power on and off are eliminated by providing a plurality of switched current sources which perform the dual function of circuit biasing and current switching. |
申请公布号 |
EP0483246(B1) |
申请公布日期 |
1996.09.04 |
申请号 |
EP19900911516 |
申请日期 |
1990.07.13 |
申请人 |
SEIKO CORPORATION |
发明人 |
MOEN, RUSSELL, R., JR.;SUTER, RICHARD, R. |
分类号 |
G04G99/00;G05F1/56;G05F3/26;G05F3/30;G08B21/00;H02J1/00;H02J7/00;H04B1/16;(IPC1-7):H03K3/01 |
主分类号 |
G04G99/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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