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ADC12L030CIWM Datasheet(PDF) 22 Page - National Semiconductor (TI) |
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ADC12L030CIWM Datasheet(HTML) 22 Page - National Semiconductor (TI) |
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22 / 35 page  Format and Set-Up Tables (Continued) TABLE 4. ADC12L032 and ADC12L030 Multiplexer Addressing MUX Address Analog Channel Addressed and Assignment with A/DIN1 tied to MUXOUT1 and A/DIN2 tied to MUXOUT2 A/D Input Polarity Assignment Multiplexer Output Channel Assignment Mode DI0 DI1 CH0 CH1 COM A/DIN1 A/DIN2 MUXOUT1 MUXOUT2 L L + − + − CH0 CH1 Differential L H − + − + CH0 CH1 H L + − + − CH0 COM Single-Ended H H + − + − CH1 COM The ADC12L030 does not have A/DIN1, A/DIN2, MUXOUT1 and MUXOUT2 pins. TABLE 5. Mode Programming ADC12L038 DI0 DI1 DI2 DI3 DI4 DI5 DI6 DI7 Mode Selected (Current) DO Format (next Conversion Cycle) ADC12L034 DI0 DI1 DI2 DI3 DI4 DI5 DI6 ADC12L030 and ADC12L032 DI0 DI1 DI2 DI3 DI4 DI5 See Tables 2, 3, 4 LLLL 12 Bit Conversion 12 or 13 Bit MSB First See Tables 2, 3, 4 L L L H 12 Bit Conversion 16 or 17 Bit MSB First See Tables 2, 3, 4 L L H L 8 Bit Conversion 8 or 9 Bit MSB First L L L L L L H H 12 Bit Conversion of Full-Scale 12 or 13 Bit MSB First See Tables 2, 3, 4 L H L L 12 Bit Conversion 12 or 13 Bit LSB First See Tables 2, 3, 4 L H L H 12 Bit Conversion 16 or 17 Bit LSB First See Tables 2, 3, 4 L H H L 8 Bit Conversion 8 or 9 Bit LSB First L L L L L H H H 12 Bit Conversion of Offset 12 or 13 Bit LSB First L L L L H L L L Auto-Cal No Change L L L L H L L H Auto-Zero No Change L L L L H L H L Power Up No Change L L L L H L H H Power Down No Change L L L L H H L L Read Status Register No Change L L L L H H L H Data Out without Sign No Change H L L L H H L H Data Out with Sign No Change L L L L H H H L Acquisition Time — 6 CCLK Cycles No Change L H L L HHH L Acquisition Time — 10 CCLK Cycles No Change H L L L HHH L Acquisition Time — 18 CCLK Cycles No Change H H L L HHH L Acquisition Time — 34 CCLK Cycles No Change L L L L HHHH User Mode No Change H X X X HHHH Test Mode (CH1–CH7 become Active Outputs) No Change X = Don’t Care The A/D powers up with no Auto-Cal, no Auto-Zero, 10 CCLK acquisition time, 12-bit + sign conversion, power up, 12- or 13-bit MSB first and user mode. www.national.com 22 |
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