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AD4134 датащи(PDF) 52 Page - Analog Devices |
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AD4134 датащи(HTML) 52 Page - Analog Devices |
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52 / 92 page ![]() Data Sheet AD4134 DEVICE CONFIGURATION analog.com Rev. 0 | 52 of 92 PROGRAMMING DIGITAL FILTER In pin control mode, four digital filter types are available through the configuration of the FILTER1/GPIO5 pin and FILTER0/GPIO4 pin. All four ADC channels share the same digital filter type. One additional digital filter type, wideband 0.10825 × ODR filter, is available only in SPI control mode. In SPI control mode, the digital filter type can be configured independently for each ADC channel via the DIGFILTER_SEL_CHx bits and the additional digital filter type (wideband 0.10825 × ODR filter or wideband 0.433 × ODR filter) via the WB_FILTER_ SEL_CHx bits, where x is the channel number from 0 to 3. Table 31 lists all the digital filter options. To configure the digital filter dynamically, change the digital filter first and then change the output data rate to ensure proper opera- tion. Table 31. Digital Filter Configuration FILTER1 or DIGFILTER_SEL_CHx, Bit 1 FILTER0 or DIGFILTER_SEL_CHx, Bit 0 WB_FILTER_SEL_CHx, Bit 0 Digital Filter Type 0 0 0 Wideband 0.433 × ODR filter 0 0 1 Wideband 0.10825 × ODR filter1 0 1 X2 Sinc6 1 0 X2 Sinc3 1 1 X2 Sinc3 with additional 60 Hz rejection 1 Available in SPI control mode only. 2 X means don’t care. |
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