参数资料
型号: TLE4925
厂商: INFINEON TECHNOLOGIES AG
元件分类: 模拟信号调理
英文描述: SPECIALTY ANALOG CIRCUIT, PSSS3
封装: PLASTIC, SSO-3
文件页数: 23/28页
文件大小: 1066K
代理商: TLE4925
Data Sheet
Page 4 of 28
10/02/2005
Running mode:
In running mode the output is triggered by the comparator. An offset cancellation
feedback loop is formed by the A/D converter, dsp and offset cancellation D/A
converter. In running mode switching always occurs at zero-crossing. It is only
affected by the (small) remaining offset of the comparator and by the remaining
propagation delay time of the signal path, mainly determined by the noise-
shaping filter. Nevertheless signals below a defined threshold are not detected to
avoid unwanted parasitic switching.
Figure 3: Startup of the device
At transition from startup-mode to running mode switching timing is moving
from low-accuracy to high accuracy zero-crossing.
startup-mode
running-mode
offset
peak
detection
offset= (max + min) / 2
offset
correction
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