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ADS7808 Datasheet(PDF) 5 Page - Burr-Brown (TI) |
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ADS7808 Datasheet(HTML) 5 Page - Burr-Brown (TI) |
5 / 10 page 5 ® ADS7808 FIGURE 1. Basic Conversion Timing. MODE Acquire t 4 t 5 t 1 t 3 t 7 t 6 Convert Acquire t 2 BUSY CS, R/C TABLE II. Conversion and Data Timing TA = –40°C to +85 °C. FIGURE 2. Serial Data Timing Using Internal Clock. (CS, EXT/INT and TAG Tied LOW.) SYMBOL DESCRIPTION MIN TYP MAX UNITS t1 Convert Pulse Width 40 4500 ns t2 BUSY Delay 65 ns t3 BUSY LOW 8 µs t4 BUSY Delay after 220 ns End of Conversion t5 Aperture Delay 40 ns t6 Conversion Time 5.7 8 µs t7 Acquisition Time 2 µs t6 + t7 Throughput Time 9 10 µs t8 R/C LOW to DATACLK Delay 450 ns t9 DATACLK Period 440 ns t10 Data Valid to DATACLK 20 75 ns HIGH Delay t11 Data Valid after 100 125 ns DATACLK LOW Delay t12 External DATACLK Period 100 ns t13 External DATACLK HIGH 20 ns t14 External DATACLK LOW 30 ns t15 DATACLK HIGH 20 t12 + 5 ns Setup Time t16 R/C to CS 10 ns Setup Time t17 SYNC Delay After 15 35 ns DATACLK HIGH t18 Data Valid Delay 25 55 ns t19 CS to Rising Edge Delay 25 ns t20 Data Available after CS LOW 4.5 µs 1 MSB Valid R/C DATACLK SDATA t 8 t 11 t 10 t 9 2 3 11 12 Bit 10 Valid Bit 1 Valid Bit 9 Valid LSB Valid t 2 t 3 BUSY |
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