发明名称 |
DIGITAL TO ANALOG CONVERTER |
摘要 |
A digital-to-analog converter is disclosed. The converter includes a gradient correction module that generates a correction term based on a model of gradient error. The correction term is then applied to the signal path in the digital domain or applied to the output of the digital-to-analog converter in the analog domain. The model used to generate the correction term is based on a vertical gradient error in the array of current source elements, which may be modelled and calibrated using a second-order polynomial. Further, a digital-to-analog converter having a Nyquist DAC and an oversampled DAC is disclosed. When the oversampled DAC is enabled, the resolution of the Nyquist DAC may be increased while slowing the conversion rate.
|
申请公布号 |
CA2791607(A1) |
申请公布日期 |
2013.04.03 |
申请号 |
CA20122791607 |
申请日期 |
2012.10.03 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
MUHAMMAD, KHURRAM;MANKU, TAJINDER;LEBEDEV, SEMYON |
分类号 |
H03M1/66 |
主分类号 |
H03M1/66 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|