发明名称 |
Phase detecting with parallel discharge paths |
摘要 |
Improved systems and methods of phase detecting are described. In one aspect, a phase detector includes a latch having an input stage and an output stage. The input stage couples to the output stage through a dynamic storage node and includes a discharge circuit. The discharge circuit has a first input and a second input and defines a discharge path for discharging the dynamic storage node that is substantially symmetric with respect to the first and second inputs. In another aspect, the dynamic storage node is discharged with a characteristic discharge time in response to a transition of the first input from a low logic level to a high logic level when the second input is at a high logic level. The dynamic storage node also is discharged with substantially the same characteristic discharge time in response to a transition of the second input from a low logic level to a high logic level when the first input is at a high logic level. |
申请公布号 |
US6690209(B1) |
申请公布日期 |
2004.02.10 |
申请号 |
US20000675998 |
申请日期 |
2000.09.28 |
申请人 |
INFINEON TECHNOLOGIES NORTH AMERICA CORP. |
发明人 |
CYRUSIAN SASAN |
分类号 |
H03D13/00;(IPC1-7):G01R25/00 |
主分类号 |
H03D13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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