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AD6640ST/PCB 데이터시트(PDF) 5 Page - Analog Devices |
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AD6640ST/PCB 데이터시트(HTML) 5 Page - Analog Devices |
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5 / 24 page ![]() AD6640 REV. 0 –5– PIN FUNCTION DESCRIPTIONS Pin No. Name Function 1, 2, 36, 37, 40, 41 DVCC +3.3 V/+5 V Power Supply (Digital). Powers output stage only. 3 ENCODE Encode Input. Data conversion initiated on rising edge. 4 ENCODE Complement of ENCODE. Drive differentially with ENCODE or bypass to Ground for single-ended clock mode. See Encoding the AD6640 section. 5, 6, 13, 14, 17, 18, 21, 22, 24, 34, 35, 38, 39 GND Ground. 7 AIN Analog Input. 8 AIN Complement of Analog Input. 9VREF Internal Voltage Reference. Nominally +2.4 V. Bypass to Ground with 0.1 µF + 0.01 µF microwave chip capacitor. 10 C1 Internal Bias Point. Bypass to ground with 0.01 µF capacitor. 11, 12, 15, 16, 19, 20 AVCC +5 V Power Supply (Analog). 23 NC No Connect. 25 D0 (LSB) Digital Output Bit (Least Significant Bit). 26–33 D1–D8 Digital Output Bits. 42, 43 D9–D10 Digital Output Bits. 44 D11 (MSB)1 Digital Output Bit (Most Significant Bit). NOTE 1Output coded as twos complement. PIN CONFIGURATION 3 4 5 6 7 1 2 10 11 8 9 40 39 38 41 42 43 44 36 35 34 37 29 30 31 32 33 27 28 25 26 23 24 12 13 14 15 16 17 18 19 20 21 22 PIN 1 TOP VIEW (Not to Scale) D8 D7 D6 D5 D4 D3 D2 AD6640 DVCC DVCC ENCODE ENCODE GND GND AIN NC = NO CONNECT VREF C1 AVCC D1 D0 (LSB) GND NC AIN |
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