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LT1469 Scheda tecnica(PDF) 19 Page - Linear Technology |
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LT1469 Scheda tecnica(HTML) 19 Page - Linear Technology |
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19 / 26 page ![]() LTC2326-16 19 232616fa For more information www.linear.com/LTC2326-16 Chain Mode, Multiple Devices When CHAIN = OVDD, the LTC2326-16 operates in chain mode. In chain mode, SDO is always enabled and RDL/SDI serves as the serial data input pin (SDI) where daisy-chain data output from another ADC can be input. This is useful for applications where hardware constraints may limit the number of lines needed to interface to a large number of converters. Figure 12 shows an example with two daisy-chained devices. The MSB of converter A will appear at SDO of converter B after 16 SCK cycles. The MSB of converter A is clocked in at the SDI/RDL pin of converter B on the rising edge of the first SCK. Figure 12. Chain Mode Timing Diagram 232616 F12 D0A D1A D14A D15A D13B D14B D15B SDOB SDOA = RDL/SDIB RDL/SDIA = 0 D0B D1B D13A D14A D15A D0A D1A 1 2 3 14 15 16 17 18 30 31 32 tDSDOBUSYL tSSDISCK tHSDISCK tBUSYLH tCONV tHOLD tHSDO tDSDO tSCKL tSCKH tSCKCH tCNVL tCYC CONVERT CONVERT SCK CNV BUSY CHAIN = OVDD tQUIET NAP NAP ACQUIRE ACQUIRE OVDD CONVERT IRQ DATA IN DIGITAL HOST CLK CNV LTC2326-16 BUSY SDO B SCK RDL/SDI CNV LTC2326-16 SDO A SCK RDL/SDI CHAIN OVDD CHAIN applicaTions inForMaTion |
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