发明名称 |
Integrated circuit oscillator |
摘要 |
An oscillator for an integrated circuit which includes a Schmitt trigger having an upper threshold voltage VH and a lower threshold voltage VL, a capacitor coupled between an input to the trigger and ground, a current generator coupled to the trigger input for charging the capacitor at a constant rate and a current generator coupled to the trigger input for discharging the capacitor at a constant rate. A charge switch in series with the charging current generator reversibly couples the charging current generator between a source of high voltage and the trigger input in response to a change in state of the trigger from a first state to a second state. A discharge switch in series with the discharging current generator reversibly couples the latter across the capacitor in response to a change in state of the trigger from the second state to the first state.
|
申请公布号 |
US4652837(A) |
申请公布日期 |
1987.03.24 |
申请号 |
US19850798268 |
申请日期 |
1985.11.15 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
D'ARRIGO, SEBASTIANO;IMONDI, GIULIANO;VERGARA, SOSSIO |
分类号 |
H03K3/0231;H03K5/15;(IPC1-7):H03K3/02 |
主分类号 |
H03K3/0231 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|