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TLV2548CPWG4 Datasheet(PDF) 10 Page - Texas Instruments |
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TLV2548CPWG4 Datasheet(HTML) 10 Page - Texas Instruments |
10 / 48 page TLV2544, TLV2548 2.7V TO 5.5V, 12BIT, 200KSPS, 4/8CHANNEL, LOW POWER SERIAL ANALOGTODIGITAL CONVERTERS WITH AUTOPOWERDOWN SLAS198E − FEBRUARY 1999 − REVISED JUNE 2003 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TLV2544/TLV2548 conversion modes (continued) Table 4. TLV2544/TLV2548 Conversion Mode CONVERSION MODE CFR D(6,5) SAMPLING TYPE OPERATION One shot 00 Normal • Single conversion from a selected channel • CS or FS to start select/sampling/conversion/read • One INT or EOC generated after each conversion • Host must serve INT by selecting channel, and converting and reading the previous output. Extended • Single conversion from a selected channel • CS to select/read • CSTART to start sampling and conversion • One INT or EOC generated after each conversion • Host must serve INT by selecting next channel and reading the previous output. Repeat 01 Normal • Repeated conversions from a selected channel • CS or FS to start sampling/conversion • One INT generated after FIFO is filled up to the threshold • Host must serve INT by either 1) (FIFO read) reading out all of the FIFO contents up to the threshold, then repeat conversions from the same selected channel or 2) writing another command(s) to change the conversion mode. If the FIFO is not read when INT is served, it is cleared. Extended • Same as normal sampling except CSTART starts each sampling and conversion when CS is high. Sweep 10 Normal • One conversion per channel from a sequence of channels • CS or FS to start sampling/conversion • One INT generated after FIFO is filled up to the threshold • Host must serve INT by (FIFO read) reading out all of the FIFO contents up to the threshold, then write another command(s) to change the conversion mode. Extended • Same as normal sampling except CSTART starts each sampling and conversion when CS is high. Repeat sweep 11 Normal • Repeated conversions from a sequence of channels • CS or FS to start sampling/conversion • One INT generated after FIFO is filled up to the threshold • Host must serve INT by either 1) (FIFO read) reading out all of the FIFO contents up to the threshold, then repeat conversions from the same selected channel or 2) writing another command(s) to change the conversion mode. If the FIFO is not read when INT is served it is cleared. Extended • Same as normal sampling except CSTART starts each sampling and conversion when CS is high. NOTES: 1. Programming the EOC/INT pin as the EOC signal works for mode 00 only. The other three modes automatically generate an INT signal irrespective of how EOC/INT is programmed. 2. Extended. Sampling mode using CSTART as the trigger only works when internal reference is selected for conversion modes 01, 10, and 11. 3. When using CSTART to sample in extended mode, the falling edge of the next CSTART trigger should occur no more than 2.5 µs after the falling CS edge (or falling FS edge if FS is active) of the channel select cycle. This is to prevent an ongoing conversion from being canceled. |
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Similar Description - TLV2548CPWG4 |
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