전자부품 데이터시트 검색엔진 |
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AD9283 데이터시트(PDF) 4 Page - Analog Devices |
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AD9283 데이터시트(HTML) 4 Page - Analog Devices |
4 / 12 page AD9283 –4– REV. B EXPLANATION OF TEST LEVELS Test Level I 100% production tested. II 100% production tested at +25 °C and sample tested at specified temperatures. III Sample tested only. IV Parameter is guaranteed by design and characterization testing. V Parameter is a typical value only. VI 100% production tested at +25 °C; guaranteed by design and characterization testing for industrial temperature range; 100% production tested at temperature extremes for military devices. PIN CONFIGURATION TOP VIEW (Not to Scale) 20 19 18 17 16 15 14 13 12 11 1 2 3 4 5 6 7 8 9 10 AD9283 ENCODE GND VD VREF OUT VREF IN GND AIN VD D7 (MSB) D6 D5 D1 D2 D3 D4 VDD GND PWRDWN D0 (LSB) AIN PIN FUNCTION DESCRIPTIONS Pin Number Name Function 1 PWRDWN Power-down function select; Logic HIGH for power-down mode (digital outputs go to high impedance state). 2 VREF OUT Internal Reference Output (+1.25 V typ); Bypass with 0.1 µF to Ground. 3 VREF IN Reference Input for ADC (+1.25 V typ). 4, 9, 16 GND Ground. 5, 8 VD Analog +3 V Power Supply. 6AIN Analog Input for ADC (Can be left open if operating in single-ended mode, but recom- mend connection to a 0.1 µF capacitor and a 25 Ω resistor in series to ground for better input matching). 7AIN Analog Input for ADC 10 ENCODE Encode Clock for ADC (ADC samples on rising edge of ENCODE). 11–14, 17–20 D7–D4, D3–D0 Digital Outputs of ADC. 15 VDD Digital output power supply. Nominally +2.5 V to +3.6 V. Table I. Output Coding (VREF = +1.25 V) Step AIN–AIN Digital Output 255 0.512 1111 1111 • • • • • • 128 0.002 1000 0000 127 –0.002 0111 1111 • • • • • • 0 –0.512 0000 0000 |
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