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FS98O21 Datasheet(PDF) 47 Page - Fortune Semiconductor Corp. |
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FS98O21 Datasheet(HTML) 47 Page - Fortune Semiconductor Corp. |
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47 / 136 page ![]() FS98O21 Rev. 1.7 47/136 Chopper Operation Amplifier Input Control Signal The OPAMP embedded in FS98O21 has a chopper function to cancel the inverting and non-inverting sides voltage bias offsets. After the Chopper operation, OPAMP input voltage bias is removed. Users could setup the S_CH1CK[1:0] to choose the Chopper Control Signal. (Please see Table 5-17, Table 5-18 and Table 5-19) Table 5-17 CLK selection table M1_CK CLK 0 MCK 1 MCK/4 Table 5-18 MCK selection table M3_CK M0_CK MCK X 0 ICK 0 1 ECK 1 1 ECK/2 Table 5-19 chopper control signal selection table S_CH1CK [1] S_CH1CK [0] Chopper Control Signal 0 0 0 0 1 1 1 0 CLK/500 1 1 CLK/1000 |
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