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ADS8505 bảng dữ liệu(PDF) 11 Page - Texas Instruments |
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ADS8505 bảng dữ liệu(HTML) 11 Page - Texas Instruments |
11 / 25 page www.ti.com Bit 0 (LSB) Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Bit 15 (MSB) Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 6 7 8 9 10 11 12 13 14 23 22 21 20 19 18 17 16 15 ADS8505 BYTE LOW Bit 8 Bit 9 Bit 10 Bit 11 Bit 12 Bit 13 Bit 14 Bit 15 (MSB) Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 (LSB) 6 7 8 9 10 11 12 13 14 23 22 21 20 19 18 17 16 15 ADS8505 BYTE HIGH +5 V ADS8505 SLAS180B – SEPTEMBER 2005 – REVISED JUNE 2007 The number of control lines can be reduced by tying CS low while using the falling edge of R/C to initiate conversions and the rising edge of R/C to activate the output mode of the converter. See Figure 23. Table 3. Conversion Timing SYMBOL DESCRIPTION MIN TYP MAX UNITS tw1 Pulse duration, convert 40 1750 ns ta Access time, data valid after R/C low 2.2 3.2 µs tpd Propagation delay time, BUSY from R/C low 15 25 ns tw2 Pulse duration, BUSY low 2.2 µs td1 Delay time, BUSY after end of conversion 5 ns td2 Delay time, aperture 5 ns tconv Conversion time 2.2 µs tacq Acquisition time 1.8 µs tdis Disable time, bus 10 30 83 ns td3 Delay time, BUSY after data valid 35 50 ns tv Valid time, previous data remains valid after R/C low 1.5 2 µs tconv + tacq Throughput time 4 µs tsu Setup time, R/C to CS 10 ns tc Cycle time between conversions 4 µs ten Enable time, bus 10 30 83 ns td4 Delay time, BYTE 5 10 30 ns Figure 22. Bit Locations Relative to State of BYTE (Pin 23) 11 Submit Documentation Feedback |
Số phần tương tự - ADS8505 |
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Mô tả tương tự - ADS8505 |
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