| 发明名称 |
READY-FLAG CIRCUITRY FOR DIFFERENTIAL AMPLIFIERS |
| 摘要 |
Ready-flag circuitry for differential amplifiers. In some embodiments, a semiconductor device may include an amplifier including two inputs, and a ready-flag circuit operably coupled to the amplifier, the ready-flag circuit configured to monitor two or more internal nodes of the amplifier and to produce a signal indicating whether a voltage or current difference between the two inputs has been minimized. In other embodiments, a method may include monitoring, via a ready-flag circuit, a first and a second internal node of a differential amplifier, wherein the differential amplifier is part of a bandgap voltage reference circuit and producing, via the ready-flag circuit, a signal indicating whether an output of the bandgap voltage reference circuit has reached a nominal value. |
| 申请公布号 |
US2015109054(A1) |
申请公布日期 |
2015.04.23 |
| 申请号 |
US201314057886 |
申请日期 |
2013.10.18 |
| 申请人 |
Freescale Semiconductor, Inc. |
发明人 |
Vilas Boas Andre Luis;Silva, JR. Edevaldo Pereira;Zanetta Pedro Barbosa;da Silva Eduardo Ribeiro |
| 分类号 |
H03F3/45;H03F1/00 |
主分类号 |
H03F3/45 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A semiconductor device, comprising:
a differential amplifier including two inputs, wherein the differential amplifier is part of a bandgap voltage reference circuit; and a ready-flag circuit operably coupled to the differential amplifier, the ready-flag circuit configured to monitor two or more internal nodes of the differential amplifier and to produce a signal indicating whether a voltage difference between the two inputs has been minimized, wherein the ready-flag circuit is configured to produce the signal after the differential amplifier has attained operational status and the output of the bandgap voltage reference circuit has reached its nominal value for a pre-determined period of time. |
| 地址 |
Austin TX US |
