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AD7982BCPZ-RL7 датащи(PDF) 9 Page - Analog Devices |
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AD7982BCPZ-RL7 датащи(HTML) 9 Page - Analog Devices |
9 / 26 page AD7982 Data Sheet Rev. D | Page 8 of 25 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS REF 1 VDD 2 IN+ 3 IN– 4 GND 5 VIO 10 SDI 9 SCK 8 SDO 7 CNV 6 AD7982 TOP VIEW (Not to Scale) Figure 4. 10-Lead MSOP Pin Configuration REF VDD IN+ IN– GND VIO NOTES 1. EXPOSED PAD. FOR THE LEAD FRAME CHIP SCALE PACKAGE (LFCSP), THE EXPOSED PAD MUST BE CONNECTED TO GND. THIS CONNECTION IS NOT REQUIRED TO MEET THE ELECTRICAL PERFORMANCES. SDI SCK SDO CNV 1 2 3 4 5 10 9 8 7 6 AD7982 TOP VIEW (Not to Scale) Figure 5. 10-Lead LFCSP Pin Configuration Table 7. Pin Function Descriptions Pin No. Mnemonic Type1 Description 1 REF AI Reference Input Voltage. The REF range is 2.4 V to 5.1 V. This pin is referred to the GND pin and must be decoupled closely to the GND pin with a 10 μF capacitor. 2 VDD P Power Supply. 3 IN+ AI Differential Positive Analog Input. 4 IN− AI Differential Negative Analog Input. 5 GND P Power Supply Ground. 6 CNV DI Convert Input. This input has multiple functions. On its leading edge, it initiates the conversions and selects the interface mode of the device: chain mode or CS mode. In CS mode, the SDO pin is enabled when CNV is low. In chain mode, the data must be read when CNV is high. 7 SDO DO Serial Data Output. The conversion result is output on this pin. It is synchronized to SCK. 8 SCK DI Serial Data Clock Input. When the device is selected, the conversion result is shifted out by this clock. 9 SDI DI Serial Data Input. This input provides multiple features. It selects the interface mode of the ADC as follows: Chain mode is selected if SDI is low during the CNV rising edge. In this mode, SDI is a data input that daisy-chains the conversion results of two or more ADCs onto a single SDO line. The digital data level on SDI is the output on SDO with a delay of 18 SCK cycles. CS mode is selected if SDI is high during the CNV rising edge. In this mode, either SDI or CNV can enable the serial output signals when low. If SDI or CNV is low when the conversion is complete, the busy indicator feature is enabled. 10 VIO P Input/Output Interface Digital Power. Nominally at the same supply as the host interface (1.8 V, 2.5 V, 3 V, or 5 V). EPAD Exposed Pad. For the lead frame chip scale package (LFCSP), the exposed pad must be connected to GND. This connection is not required to meet the electrical performances. 1AI means analog input, DI means digital input, DO means digital output, and P means power. |
Аналогичный номер детали - AD7982BCPZ-RL7 |
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Аналогичное описание - AD7982BCPZ-RL7 |
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