发明名称 |
Detection circuit for relative error voltage |
摘要 |
A detection circuit for a relative error voltage, including: a first current mirror, a second current mirror, a third current mirror, a current sink and resistors R1, R2 and R3. A voltage signal to be detected V1 accesses the first current mirror via the resistor R2, and a voltage signal to be detected V2 accesses the second current mirror via the resistor R3; a mirrored-end of the first current mirror is connected to the current sink, and a mirroring-end thereof is connected to a mirrored-end of the third current mirror; a mirrored-end of the second current mirror is connected to the current sink, and a mirroring-end thereof is connected to a mirroring-end of the third current mirror; the current sink is grounded via the resistor R1; and the third current mirror converts double-ended currents of the first and the second current mirrors to single-ended currents to output as voltage signals. |
申请公布号 |
US9618571(B2) |
申请公布日期 |
2017.04.11 |
申请号 |
US201314436605 |
申请日期 |
2013.09.22 |
申请人 |
SANECHIPS TECHNOLOGY CO., LTD. |
发明人 |
Zhang Yongbo |
分类号 |
G01R31/28;G01R19/10 |
主分类号 |
G01R31/28 |
代理机构 |
Plumsea Law Group, LLC |
代理人 |
Plumsea Law Group, LLC |
主权项 |
1. A detection circuit for a relative error voltage, comprising: a first current mirror, a second current mirror, a third current mirror, a current sink and resistors R1, R2 and R3; wherein,
a voltage signal to be detected V1 accesses the first current mirror via the resistor R2, and a voltage signal to be detected V2 accesses the second current mirror via the resistor R3; a mirrored end of the first current mirror is connected to the current sink, and a mirroring end of the first current mirror is connected to a mirrored end of the third current mirror; a mirrored end of the second current mirror is connected to the current sink, and a mirroring end of the second current mirror is connected to a mirroring end of the third current mirror; and the current sink is grounded via the resistor R1; and the third current mirror converts double-ended currents of the first current mirror and the second current mirror to single-ended currents to output as voltage signals. |
地址 |
Shenzhen CN |