专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP1257060A3 Digital-to-analogue converter using an array of current sources 有权
标题翻译：数字 - 模拟转换器与电流源装置
公开(公告)号：EP1257060A3
公开(公告)日：2004-02-04
申请号：EP02253214.7
申请日：2002-05-08
申请人： Broadcom Corporation
发明人： Boxho, Jean
IPC分类号： H03M1/06 , H03M1/10
CPC分类号： H03M1/066 , H03M1/1004 , H03M1/747
摘要： A current source DAC has calibration of the current sources used for providing the analogue output. There are two outputs, one of which provides the output current or else a differential output is provided. The calibration is cyclic and the current source outputs switched to the output terminals are selected as a function of the point within the calibration cycle. The current stage of the cyclic calibration process is thus taken into account in the D/A conversion. For example, the average time since calibration for all current sources having outputs switched to the first output may be approximately equal to the average time since calibration for all current sources having outputs switched to the second output. In this way, the average current of the cells switched to one terminal is identical to the average current of the cells switched to the other terminal, and the average current of the cells switched to each terminal remains constant in time irrespective of the digital signal value being converted. This ensures DAC linearity.

2. 发明公开

EP1257060A2 Digital-to-analogue converter using an array of current sources 有权
标题翻译：数字模拟漫游器（Stromquellenanordnung）
公开(公告)号：EP1257060A2
公开(公告)日：2002-11-13
申请号：EP02253214.7
申请日：2002-05-08
申请人： Broadcom Corporation
发明人： Boxho, Jean
IPC分类号： H03M1/06
CPC分类号： H03M1/066 , H03M1/1004 , H03M1/747
摘要： A current source DAC has calibration of the current sources used for providing the analogue output. There are two outputs, one of which provides the output current or else a differential output is provided. The calibration is cyclic and the current source outputs switched to the output terminals are selected as a function of the point within the calibration cycle. The current stage of the cyclic calibration process is thus taken into account in the D/A conversion. For example, the average time since calibration for all current sources having outputs switched to the first output may be approximately equal to the average time since calibration for all current sources having outputs switched to the second output. In this way, the average current of the cells switched to one terminal is identical to the average current of the cells switched to the other terminal, and the average current of the cells switched to each terminal remains constant in time irrespective of the digital signal value being converted. This ensures DAC linearity.
摘要翻译：电流源DAC具有用于提供模拟输出的电流源的校准。有两个输出，其中一个提供输出电流，或者提供差分输出。校准是循环的，并且切换到输出端子的电流源输出作为校准周期内的点的函数被选择。因此在D / A转换中考虑了循环校准过程的当前阶段。例如，具有切换到第一输出的输出的所有电流源的校准后的平均时间可以近似等于对于具有切换到第二输出的输出的所有电流源的校准后的平均时间。以这种方式，切换到一个终端的小区的平均电流与切换到另一个终端的小区的平均电流相同，并且切换到每个终端的小区的平均电流在时间上保持恒定，而与数字信号值无关被转换。这确保了DAC的线性度。

3. 发明授权

EP1257060B1 Digital-to-analogue converter using an array of current sources 有权
标题翻译：数字 - 模拟转换器与电流源装置
公开(公告)号：EP1257060B1
公开(公告)日：2005-08-17
申请号：EP02253214.7
申请日：2002-05-08
申请人： Broadcom Corporation
发明人： Boxho, Jean
IPC分类号： H03M1/06 , H03M1/10
CPC分类号： H03M1/066 , H03M1/1004 , H03M1/747

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式