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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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ADC3908CSSS bảng dữ liệu(PDF) 32 Page - Texas Instruments |
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ADC3908CSSS bảng dữ liệu(HTML) 32 Page - Texas Instruments |
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32 / 131 page  ADC ADC Parallel Interface INAP INAM INBP INBM 180° OE DCLK DCLK #10 DOUT CLK Figure 6-2. Block Diagram of Interleaving Mode 6.3.2 Analog Input The analog inputs of ADC3910Dx and ADC3910Sx supports differential and single-ended configuration, with support for AC coupling and DC coupling. Analog inputs are designed for an input common mode voltage of 1.25V which must be provided externally on each input pin. DC-coupled input signals must have a common mode voltage that meets the device input common mode voltage range. The ADC3910Dx and ADC3910Sx has buffered analog inputs which eases design by isolating the input from the ADC sampling operation. 6.3.2.1 Single Ended Input The ADC3910Dx and ADC3910Sx can be configured to operate in single ended mode using just the positive signal input. This operating mode must be enabled via SPI write to register 0x30B. The single ended signal is connected to the positive input of the ADC and negative input needs to be biased to VCM as shown in Figure 6-3. V CM INxP INxM 0.475V -0.475V 0V 0.475V -0.475V V CM R V CM INxP INxM V CM Figure 6-3. Single ended analog input: AC coupled (left) and DC coupled (right) 6.3.2.2 Differential Input The ADC3910Dx and ADC3910Sx by default is configured to operate in differential mode with a swing of 1.9 Vpp as shown in Figure 6-4. + – V CM + – INxP INxM V CM INxP INxM V CM R R Figure 6-4. Differential analog input: AC coupled (left) and DC coupled (right) ADC3910D125 SBASAD1 – DECEMBER 2023 www.ti.com 32 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated Product Folder Links: ADC3910D125 |
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