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DFE252012F-R47M 数据表(PDF) 57 Page - Analog Devices |
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DFE252012F-R47M 数据表(HTML) 57 Page - Analog Devices |
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57 / 122 page  AFE CH2 CH1 MEAS_S 8-BIT SAR ADC CH4 CH3 CH11 ADC DIGITAL LOGIC ADC_CLK AVG_CNT[1:0] CHx_EN[10:0] CHx_AVG[10:0] MUX MEAS_C • • • Figure 13. ADC Block Diagram The measurement range and its LSB size for each ADC channel is listed in Table 18. Table 18. ADC Functions and Measurement Ranges CHANNEL NUMBER DESCRIPTION MEASUREMENT RANGE LSB SIZE 1 PH1 Output Current (IOUT1) -6.69A to 9.2475A 62.5mA 2 PH2 Output Current (IOUT2) -6.69A to 9.2475A 62.5mA 3 PH3 Output Current (IOUT3) -6.69A to 9.2475A 62.5mA 4 PH4 Output Current (IOUT4) -6.69A to 9.2475A 62.5mA 5 PH1 Output Voltage (VOUT1) 0V to 1.59375V (M1_RNG = 0x0) 6.25mV 0V to 3.1875V (M1_RNG = 0x1) 12.5mV 0V to 6.375V (M1_RNG = 0x2) 25mV 6 PH2 Output Voltage (VOUT2) 0V to 1.59375V (M2_RNG = 0x0) 6.25mV 0V to 3.1875V (M2_RNG = 0x1) 12.5mV 0V to 6.375V (M2_RNG = 0x2) 25mV 7 PH3 Output Voltage (VOUT3) 0V to 1.59375V (M3_RNG = 0x0) 6.25mV 0V to 3.1875V (M3_RNG = 0x1) 12.5mV 0V to 6.375V (M3_RNG = 0x2) 25mV 8 PH4 Output Voltage (VOUT4) 0V to 1.59375V (M4_RNG = 0x0) 6.25mV 0V to 3.1875V (M4_RNG = 0x1) 12.5mV 0V to 6.375V (M4_RNG = 0x2) 25mV 9 SYS Input Voltage (VSYS) 0V to 6.375V 25mV 0V to 19.125V 75mV 10 Junction Temperature (TJ) -273°C to +167°C 1.725°C 11 External Input (VMFIOx) 0V to 1.195V 4.6875mV ADC Enable and Measurement Options Each individual ADC channel is enabled by setting the CHx_EN bit. The ADC starts sampling the data about 20μs after the MEAS_S bit is set (single measurement). Once the sampling is completed, it takes about 10μs of conversion time to upload the readback data into its corresponding data register (ADC_DATAx). In case more than one channel is enabled, the ADC engine measures all enabled channels one by one and uploads the readback data to the ADC_DATAx registers in turn. The AVG_CNT[1:0] bits set the number of readings (2, 4, 8, or 16 points) before the ADC uploads the averaged data into the ADC_DATAx registers. MAX77542 16VIN/16A, Quad-Phase High-Efficiency Buck Converter www.analog.com Analog Devices | 57 |
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