データシートサーチシステム |
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AD7866 データシート(PDF) 4 Page - Analog Devices |
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AD7866 データシート(HTML) 4 Page - Analog Devices |
4 / 24 page REV. A –4– AD7866 TIMING SPECIFICATIONS1(V DD = 2.7 V to 5.25 V, VDRIVE = 2.7 V to 5.25 V, VREF = 2.5 V; TA = TMIN to TMAX, unless otherwise noted.) Limit at Parameter TMIN, TMAX Unit Description fSCLK 2 10 kHz min 20 MHz max tCONVERT 16 tSCLK ns max tSCLK = 1/fSCLK 800 ns max fSCLK = 20 MHz tQUIET 50 ns max Minimum Time between End of Serial Read and Next Falling Edge of CS t2 10 ns min CS to SCLK Setup Time t3 3 25 ns max Delay from CS until D OUTA and DOUTB Three-State Disabled t4 3 40 ns max Data Access Time after SCLK Falling Edge. VDRIVE 3 V, CL = 50 pF; VDRIVE < 3 V, CL = 25 pF t5 0.4 tSCLK ns min SCLK Low Pulsewidth t6 0.4 tSCLK ns min SCLK High Pulsewidth t7 10 ns min SCLK to Data Valid Hold Time t8 4 25 ns max CS Rising Edge to D OUTA, DOUTB, High Impedance t9 4 10 ns min SCLK Falling Edge to DOUTA, DOUTB, High Impedance 50 ns max SCLK Falling Edge to DOUTA, DOUTB, High Impedance NOTES 1Sample tested at 25 °C to ensure compliance. All input signals are specified with t R = tF = 5 ns (10% to 90% of VDRIVE) and timed from a voltage level of 1.6 V. 2Mark/Space ratio for the CLK input is 40/60 to 60/40. 3Measured with the load circuit of Figure 1 and defined as the time required for the output to cross 0.8 V or 2.0 V. 4t 8, t9 are derived from the measured time taken by the data outputs to change 0.5 V when loaded with the circuit of Figure 1. The measured number is then extrapo- lated back to remove the effects of charging or discharging the 50 pF capacitor. This means that the times t8 and t9 quoted in the timing characteristics are the true bus relinquish times of the part and are independent of the bus loading. Specifications subject to change without notice. 1.6V 200 AIOL 200 A IOH CL 50pF TO OUTPUT PIN Figure 1. Load Circuit for Digital Output Timing Specifications |
同様の部品番号 - AD7866_15 |
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同様の説明 - AD7866_15 |
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