发明名称 |
Impedance control circuit |
摘要 |
An impedance control circuit that reduces the impedance variance when an external impedance generated from an external resistor is matched to internal impedance. In one aspect, an impedance control circuit comprises an external resistor for establishing a first reference voltage; a comparator for comparing the first reference voltage with a second reference voltage and outputting an impedance corresponding to the result of the comparison; and a PMOS current source connected to a constant-voltage source and to the output of the comparator, wherein the PMOS current source generates a current that corresponds to the impedance of the comparator.
|
申请公布号 |
US2002063575(A1) |
申请公布日期 |
2002.05.30 |
申请号 |
US20010872894 |
申请日期 |
2001.06.01 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
KIM NAM-SEOG;CHO UK-RAE |
分类号 |
G05F1/46;(IPC1-7):H03K17/16 |
主分类号 |
G05F1/46 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|