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ADS7254IRTER Datasheet(PDF) 11 Page - Texas Instruments |
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ADS7254IRTER Datasheet(HTML) 11 Page - Texas Instruments |
11 / 69 page ADS8354, ADS7854, ADS7254 www.ti.com SBAS556B – OCTOBER 2013 – REVISED AUGUST 2014 7.9 Timing Requirements: Interface Mode (1) PARAMETER ASSOCIATED FIGURES tCLK CLOCK period Figure 1, Figure 90, Figure 91, Figure 92, Figure 93 tACQ Acquisition time Figure 90, Figure 91, Figure 92, Figure 93 tCONV Conversion time Figure 90, Figure 91, Figure 92, Figure 93 (1) These parameters are specific to the interface mode of operation. Refer to the Conversion Data Read section for more details. 7.10 Timing Characteristics: Serial Interface PARAMETER TEST CONDITIONS ASSOCIATED FIGURES MIN TYP MAX UNIT TIMING REQUIREMENTS tPH_CK CLOCK high time 0.4 0.6 tCLK tPL_CK CLOCK low time Figure 1 0.4 0.6 tCLK fCLK CLOCK frequency 1 / tCLK MHz tPH_CS CS high time Figure 1 40 ns ADS8354 150 ns tPH_CS_SHRT CS high time after frame abort ADS7854 Figure 98 100 ns ADS7254 70 ns Setup time: CS falling edge to tSU_CSCK 15 ns SCLK falling edge Delay time: Last SCLK falling edge tD_CKCS 15 ns to CS rising edge Figure 1 Setup time: DIN data valid to SCLK tSU_CKDI 5 ns falling edge Hold time: SCLK falling edge to tHT_CKDI 5 ns (previous) data valid on DIN Power-up time from STANDBY tPU_STDBY Figure 95 1 µs mode With internal reference 3 ms tPU_SPD Power-up time from SPD mode Figure 97 With external reference 1 ms TIMING SPECIFICATIONS ADS8354 32-CLK mode 1.425 µs Figure 90, Figure 91 32-CLK mode 1 µs ADS7854 tTHROUGHPUT Throughput time 16-CLK mode Figure 92, Figure 93 1 µs 32-CLK mode Figure 90, Figure 91 1 µs ADS7254 16-CLK mode Figure 92, Figure 93 1 µs Figure 90, Figure 91, fTHROUGHPUT Throughput 1 / tTHROUGHPUT kSPS Figure 92, Figure 93 Delay time: CS falling edge to data tDV_CSDO 12 ns enable Delay time: CS rising edge to data tDZ_CSDO Figure 1 12 ns going to 3-state Delay time: SCLK falling edge to tD_CKDO 20 ns next data valid Copyright © 2013–2014, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: ADS8354 ADS7854 ADS7254 |
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