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AD6644ST 数据表(PDF) 6 Page - Analog Devices |
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AD6644ST 数据表(HTML) 6 Page - Analog Devices |
6 / 19 page AD6644 –6– REV. 0 PIN FUNCTION DESCRIPTIONS Pin No. Name Function 1, 33, 43 DVCC 3.3 V Power Supply (Digital) Output Stage Only. 2, 4, 7, 10, 13, 15, 17, 19, 21, 23, GND Ground. 25, 27, 29, 34, 42 3VREF 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); Two’s Complement 37–41, 44–50 D1–D5, D6–D12 Digital Output Bits in Two’s Complement. 51 D13 (MSB) Digital Output Bit (Most Significant Bit); Two’s Complement. 52 DRY Data Ready Output. PIN CONFIGURATION 40 41 42 43 44 45 46 47 48 49 50 51 52 14 15 16 17 18 19 20 21 22 23 24 25 26 1 2 3 4 5 6 7 8 9 10 11 12 13 27 28 29 30 31 32 33 34 35 36 37 38 39 PIN 1 IDENTIFIER TOP VIEW (Not to Scale) DNC = DO NOT CONNECT DVCC GND VREF GND ENCODE ENCODE GND AVCC AVCC GND AIN AIN GND D3 D2 D1 D0 (LSB) DMID GND DVCC OVR DNC AVCC GND AVCC GND AD6644 |
类似零件编号 - AD6644ST |
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类似说明 - AD6644ST |
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