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AD7732BRU Folha de dados(PDF) 6 Page - Analog Devices |
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AD7732BRU Folha de dados(HTML) 6 Page - Analog Devices |
6 / 32 page AD7732 TIMING SPECIFICATIONS Table 2. (AVDD = 5 V ± 5%; DVDD = 2.7 V to 3.6 V, or 5 V ± 5%; Input Logic 0 = 0 V; Logic 1 = DVDD; unless otherwise noted.)1 Parameter Min Typ Max Unit Test Conditions/Comments Master Clock Range 1 6.144 MHz t1 50 ns SYNC Pulsewidth t2 500 ns RESET Pulsewidth Read Operation t4 0 ns CS Falling Edge to SCLK Falling Edge Setup Time t52 SCLK Falling Edge to Data Valid Delay 0 60 ns DVDD of 4.75 V to 5.25 V 0 80 ns DVDD of 2.7 V to 3.3 V t5A2, 3 CS Falling Edge to Data Valid Delay 0 60 ns DVDD of 4.75 V to 5.25 V 0 80 ns DVDD of 2.7 V to 3.3 V t6 50 ns SCLK High Pulsewidth t7 50 ns SCLK Low Pulsewidth t8 0 ns CS Rising Edge after SCLK Rising Edge Hold Time t94 10 80 ns Bus Relinquish Time after SCLK Rising Edge Write Operation t11 0 ns CS Falling Edge to SCLK Falling Edge Setup t12 30 ns Data Valid to SCLK Rising Edge Setup Time t13 25 ns Data Valid after SCLK Rising Edge Hold Time t14 50 ns SCLK High Pulsewidth t15 50 ns SCLK Low Pulsewidth t16 0 ns CS Rising Edge after SCLK Rising Edge Hold Time 1 Sample tested during initial release to ensure compliance. All input signals are specified with tr = tf = 5 ns (10% to 90% of DVDD) and timed from a voltage level of 1.6 V. See and . Figure 2 Figure 3 2 These numbers are measured with the load circuit of and defined as the time required for the output to cross the VOL or VOH limits. Figure 4 Figure 4 3 This specification is relevant only if CS goes low while SCLK is low. 4 These numbers are derived from the measured time taken by the data output to change 0.5 V when loaded with the circuit of . The measured number is then extrapolated back to remove effects of charging or discharging the 50 pF capacitor. This means that the times quoted in the Timing Characteristics are the true bus relinquish times of the part and as such are independent of external bus loading capacitances. Rev. 0 | Page 6 of 32 |
Nº de peça semelhante - AD7732BRU |
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Descrição semelhante - AD7732BRU |
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