发明名称 |
Data sampler circuit with equalization function and method for sampling data |
摘要 |
A data sampler circuit comprises a transconductance amplifier, a latch circuit, a current-to-voltage converter, and a negative resistance circuit. The transconductance amplifier has an input and an output. The latch circuit is coupled to the output of the transconductance amplifier. The current-to-voltage converter has an input coupled to the output of the transconductance amplifier, and an output for providing a feedback signal to the latch circuit. The negative resistance circuit is coupled to the output of the transconductance amplifier and provides equalization during both a sampling mode and a data latching mode. In one embodiment, the negative resistance circuit comprises a pair of cross-coupled transistors. A gain of the negative resistance circuit can be adjusted based on a pulse width of an input signal. |
申请公布号 |
US9621136(B1) |
申请公布日期 |
2017.04.11 |
申请号 |
US201514939273 |
申请日期 |
2015.11.12 |
申请人 |
NXP USA, INC. |
发明人 |
Chang Kevin Yi Cheng |
分类号 |
H04L27/08;H03K3/356;H04B1/12 |
主分类号 |
H04L27/08 |
代理机构 |
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代理人 |
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主权项 |
1. A data sampler circuit comprising: a transconductance amplifier having an input and an output; a latch circuit coupled to the output of the transconductance amplifier; a current-to-voltage converter having an input coupled to the output of the transconductance amplifier, and an output for providing a feedback signal to the latch circuit; and a negative resistance circuit coupled to the output of the transconductance amplifier, a control circuit having an input coupled to the output of the current-to-voltage converter, and a output for providing a control signal to the variable gain negative resistance circuit. |
地址 |
Austin TX US |