| 发明名称 |
DIFFERENTIAL MEASUREMENTS WITH A LARGE COMMON MODE INPUT VOLTAGE |
| 摘要 |
An apparatus comprises a differential amplifier circuit and a current source. The differential amplifier circuit is configured to receive a voltage at an input, wherein the differential amplifier circuit generates an output voltage having a magnitude proportional to the received voltage over a voltage range to be measured at a specified output common mode voltage. The current source is electrically connected to an input of the differential amplifier circuit and is configured to subtract a midpoint of a voltage range of the battery voltage to be measured at the input of the differential amplifier, wherein a circuit supply voltage provided to the differential amplifier circuit and the current source is less than the voltage at the input. |
| 申请公布号 |
US2015015333(A1) |
申请公布日期 |
2015.01.15 |
| 申请号 |
US201414291640 |
申请日期 |
2014.05.30 |
| 申请人 |
Fairchild Semiconductor Corporation |
发明人 |
Jasa Hrvoje;Jordan Andrew M. |
| 分类号 |
H03F3/45 |
主分类号 |
H03F3/45 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An apparatus comprising:
a differential amplifier circuit configured to receive a voltage at an input, wherein the differential amplifier circuit generates an output voltage having a magnitude proportional to the received voltage over a voltage range to be measured at a specified output common mode voltage; and a current source electrically connected to the input of the differential amplifier circuit configured to subtract a midpoint of a voltage range of the battery voltage to be measured at the input of the differential amplifier, wherein a circuit supply voltage provided to the differential amplifier circuit and the current source is less than the voltage at the input |
| 地址 |
San Jose CA US |
