전자부품 데이터시트 검색엔진 |
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AD6644ASTZ-40 데이터시트(PDF) 9 Page - Analog Devices |
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AD6644ASTZ-40 데이터시트(HTML) 9 Page - Analog Devices |
9 / 25 page AD6644 Rev. D | Page 8 of 24 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS DNC = DO NOT CONNECT PIN 1 IDENTIFIER AD6644 TOP VIEW (Not to Scale) 1 DVCC 2 GND 3 VREF 4 GND 5 ENCODE 6 ENCODE 7 GND 8 AVCC 9 AVCC 10 GND 11 14 AIN 12 AIN 13 GND 15 16 17 18 19 20 21 22 23 24 25 26 27 GND 28 AVCC 29 GND 30 AVCC 31 DNC 32 OVR 33 DVCC 34 GND 35 DMID 36 D0 (LSB) 37 40 D1 38 D2 39 D3 41 42 43 44 45 46 47 48 49 50 51 52 Figure 3. Pin Configuration Table 8. Pin Function Descriptions Pin Number Mnemonic Description 1, 33, 43 DVCC 3.3 V Power Supply (Digital), Output Stage Only. 2, 4, 7, 10, 13, 15, 17, 19, 21, 23, 25, 27, 29, 34, 42 GND Ground. 3 VREF 2.4 V (Analog Reference). Bypass to ground with 0.1 μF microwave chip capacitor. 5 ENCODE Encode Input. Conversion initiated on rising edge. 6 ENCODE Complement of ENCODE. Differential input. 8, 9, 14, 16, 18, 22, 26, 28, 30 AVCC 5 V Analog Power Supply. 11 AIN Analog Input. 12 AIN Complement of AIN. Differential analog input. 20 C1 Internal Voltage Reference. Bypass to ground with 0.1 μF microwave chip capacitor. 24 C2 Internal Voltage Reference. Bypass to ground with 0.1 μF microwave chip capacitor. 31 DNC Do not connect this pin. 32 OVR Overrange Bit. High indicates analog input exceeds ±FS. 35 DMID Output Data Voltage Midpoint. Approximately equal to DVCC/2. 36 D0 (LSB) Digital Output Bit (Least Significant Bit). Twos complement. 37 to 41, 44 to 50 D1 to D5, D6 to D12 Digital Output Bits in Twos Complement. 51 D13 (MSB) Digital Output Bit (Most Significant Bit). Twos complement. 52 DRY Data Ready Output. |
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