发明名称 |
A NON-RETURN- TO- ZERO DAC USING REFERENCE SINE WAVE SIGNALS |
摘要 |
A digital to analog converter which produces a non-return to zero output voltage. Two SIN DAC converters having return to zero (RZ) output voltages connected to provide a common NRZ output signal. The SIN DAC converters receive the digital signal and a delayed version of the digital signal. The reference sine voltage applied to each SIN DAC have a respective phase shift so that the outputs from each SIN DAC are phase shifted. The combined phase shifted output signals produce an NRZ signal with a reduced susceptibility to clock signal jitter, and which contain significantly less high frequency content than the RZ output signal from a SIN DAC.
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申请公布号 |
US2002140593(A1) |
申请公布日期 |
2002.10.03 |
申请号 |
US20010824565 |
申请日期 |
2001.04.03 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
ESHRAGHI ARIA;GANTI RAMKISHORE |
分类号 |
H03M1/08;H03M1/66;(IPC1-7):H03M1/66 |
主分类号 |
H03M1/08 |
代理机构 |
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