전자부품 데이터시트 검색엔진 |
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CA3310M 데이터시트(PDF) 9 Page - Intersil Corporation |
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CA3310M 데이터시트(HTML) 9 Page - Intersil Corporation |
9 / 16 page 9 FIGURE 14. SUPPLY CURRENT vs CLOCK FREQUENCY FIGURE 15. SUPPLY CURRENT vs TEMPERATURE TABLE 1. PIN DESCRIPTIONS PIN NUMBER NAME DESCRIPTION 1-10 D0 - D9 Three-State outputs for data bits representing 20 (LSB) through 29 (MSB). 11 DRDY Output flag signifying new data is available. Goes high at end of clock period 13, goes low when new conversion started. Also reset asynchronously by DRST. 12 VSS Digital Ground. 13 DRST Active low input, resets DRDY. 14 OEM Active low input, three-state enable of D2 - D9. 15 OEL Active low input, three-state enable of D0, D1. 16 VAA- Analog Ground. 17 VAA+ Analog + Supply. 18 VREF- Reference input voltage, sets 0 code (-) end of input range. 19 STRT Active Low Start Conversion Input. Recognized after end of clock period 13. 20 CLK Clock input or output. Conversion functions are synchronous to high-going edge. 21 REXT Clock adjust input when using internal clock. 22 VREF+ Reference input voltage, set 1023 code (+) end of input range. 23 VlN Analog Input. 24 VDD Digital + Supply. TABLE 2. OUTPUT CODES CODE DESCRIPTION INPUT VOLTAGE (NOTE 4) (V) BINARY OUTPUT CODE DECIMAL COUNT MSB LSB D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Zero 0.000 000 0000000 0 1 LSB 0.0045 000 0000001 1 1/ 4 (VREF+ - VREF -) 1.152 010 0000000 256 1/ 2 (VREF+ - VREF -) 2.304 100 0000000 512 3/ 4 (VREF+ - VREF -) 3.456 110 0000000 768 (VREF+ - VREF-) - 1 LSB 4.6035 111 1111111 1023 NOTE: 4. The voltages listed above are the ideal centers of each output code shown as a function of its associated reference voltage. Typical Performances Curves (Continued) CLOCK FREQUENCY (MHz) 8 6 4 2 0 0.5 0 1.0 1.5 2.0 2.5 3.0 VDD = VAA = VREF = 3 - 6V LOAD = 50pF/OUTPUT CONTINUOUS CONVERSIONS 3.5 10 12 6V 5V 3V 4V TEMPERATURE (oC) 6 5 4 3 2 1 0 25 85 125 VDD = 3-6V AND REXT = OPEN OR SHORTED. CLOCK = INTERNAL, FREE RUNNING VDD = VAA+ VDD = 6V, REXT = SHORT VDD = 6V, REXT = OPEN 5V, SHORT 5V, OPEN 4V, OPEN 4V, SHORT 3V, SHORT -40 0 7 8 3V, OPEN -50 LSB V REF+ V REF- – () 1024 ---------------------------------------------- = V REF+ V REF- – () 4.608 V = CA3310, CA3310A |
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