I use ADS7861 to decode SIN/CON encoder (with PMSM motor driver 15KW power).
The ADS7861 work on mode #3
Before enable PWM Signal (IGBT control signal) The ADS7861 work normally
but after enable PWM Signal The ADS7861 damaged
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Hi Chin-Win,
You asked the same question about the ADS7861 a couple days ago:
http://e2e.ti.com/support/data_converters/precision_data_converters/f/73/t/194371.aspx
You never did respond to me, so please review that post and the other from February. Please share your schematic and give details about how you are actually driving the ADS7861.