KOMBINIERTE VORSPANNUNGSVERSORGUNGS- UND LEISTUNGSUNTERBRECHER-SCHALTUNG
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
DE69028406(T2)
申请公布日期
1997.01.23
申请号
DE1990628406T
申请日期
1990.07.13
申请人
SEIKO COMMUNICATIONS HOLDING N.V., CURACAO, AN
发明人
MOEN, RUSSELL, R., JR., TIGARD, OR 97224, US;SUTER, RICHARD, R., BEAVERTON, OR 97006, US