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AD9054BST-200 Arkusz danych(PDF) 4 Page - Analog Devices |
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AD9054BST-200 Arkusz danych(HTML) 4 Page - Analog Devices |
4 / 20 page AD9054 –4– REV. 0 CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD9054 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. ABSOLUTE MAXIMUM RATINGS* VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +6 V Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . VDD to 0.0 V Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . VDD to 0.0 V VREF IN, VREF OUT . . . . . . . . . . . . . . . . . . . VDD to 0.0 V Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . . 20 mA Operating Temperature . . . . . . . . . . . . . . . . –55 °C to +125°C Storage Temperature . . . . . . . . . . . . . . . . . . –65 °C to +150°C Maximum Junction Temperature . . . . . . . . . . . . . . . +175 °C Maximum Case Temperature . . . . . . . . . . . . . . . . . . +150 °C *Stresses above those listed under Absolute Maximum Ratings may cause perma- nent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions outside of those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum ratings for extended periods may affect device reliability. Table I. Output Coding Step AIN– AIN Code Binary 255 ≥0.512 V 255 1111 1111 254 0.508 V 254 1111 1110 253 0.504 V 253 1111 1101 •• • • •• • • •• • • 129 0.006 V 129 1000 0001 128 0.002 V 128 1000 0000 127 –0.002 V 127 0111 1111 126 –0.006 V 126 0111 1110 •• • • •• • • •• • • 2 –0.504 V 2 0000 0010 1 –0.508 V 1 0000 0001 0 ≤–0.512 V 0 0000 0000 ORDERING GUIDE Temperature Package Model Range Option* AD9054BST-200 –40 °C to +85°C ST-44 AD9054BST-135 –40 °C to +85°C ST-44 AD9054/PCB +25 °C Evaluation Board *ST = Plastic Thin Quad Flatpack (TQFP). PIN FUNCTION DESCRIPTIONS Pin Number Name Function 1 ENCODE Encode Clock for ADC (ADC Samples on Rising Edge of ENCODE). 2 ENCODE Encode Clock Complement (ADC Samples on Falling Edge of ENCODE). 3, 5, 15, 18, 28, VDD Power Supply (+5 V). 30, 31, 36, 41 4, 6, 16, 17, 27, GND Ground. 29, 32, 35, 37, 40 14–7 DA0–DA7 Digital Outputs of ADC Channel A. DA7 is the MSB, DA0 the LSB. 19–26 DB0–DB7 Digital Outputs of ADC Channel B. DB7 is the MSB, DB0 the LSB. 33 VREF OUT Internal Reference Output (+2.5 V typical); Bypass with 0.1 µF to Ground. 34 VREF IN Reference Input for ADC (+2.5 V typical, ±4%). 38 AIN Analog Input—Complement. Connect to input signal midscale reference. 39 AIN Analog Input—True. 42 DEMUX Format Select. LOW = Dual. Channel Mode, HIGH = Single. Channel Mode (Channel A Only). 43 DS Data Sync Complement. 44 DS Data Sync—Aligns output chan- nels in Dual-Channel Mode. PIN CONFIGURATION WARNING! ESD SENSITIVE DEVICE PIN 1 IDENTIFIER TOP VIEW (PINS DOWN) DB1 DB2 DB3 GND DA2 DA1 DA0 (LSB) VDD GND VDD DB0 (LSB) DS DS DEMUX VDD GND AIN AIN GND VDD GND VREF IN AD9054 |
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