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DS1631A Datasheet(PDF) 5 Page - Maxim Integrated Products |
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DS1631A Datasheet(HTML) 5 Page - Maxim Integrated Products |
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5 / 15 page  DS1631/DS1631A/DS1731 5 of 15 AC ELECTRICAL CHARACTERISTICS (VDD = 2.7V to 5.5V; TA = -55°C to +125°C.) PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS NOTES 9-bit resolution 93.75 10-bit resolution 187.5 11-bit resolution 375 Temperature Conversion Time tTC 12-bit resolution 750 ms SCL Frequency fSCL 0 400 kHz Bus Free Time Between a STOP and START Condition tBUF 1.3 µs 5 START and Repeated START Hold Time from Falling SCL tHD:STA 0.6 µs 5, 6 Low Period of SCL tLOW 1.3 µs 5 High Period of SCL tHIGH 0.6 µs 5 Repeated START Condition Setup Time to Rising SCL tSU:STA 0.6 µs 5 Data-Out Hold Time from Falling SCL tHD:DAT 0 0.9 µs 5 Data-In Setup Time to Rising SCL tSU:DAT 100 ns 5 Rise Time of SDA and SCL tR 20 + 0.1CB 1000 ns 5, 7 Fall Time of SDA and SCL tF 20 + 0.1CB 300 ns 5, 7 STOP Setup Time to Rising SCL tSU:STO 0.6 µs 5 Capacitive Load for Each Bus Line CB 400 pF I/O Capacitance CI/O 10 pF Input Capacitance CI 5 pF Spike Pulse Width that can be Suppressed by Input Filter tSP 0 50 ns NOTES: 1) All voltages are referenced to GND. 2) See Figure 2 for Typical Operating Curves. 3) Specified with TOUT pin open; A0, A1, A2 = 0V or VDD; and fSCL ≥ 2Hz. 4) Specified with temperature conversions stopped; TOUT pin open; SDA = VDD; SCL = VDD; and A0, A1, A2 = 0V or VDD. 5) See Timing Diagram in Figure 3. All timing is referenced to 0.9 x VDD and 0.1 x VDD. 6) After this period the first clock pulse is generated. 7) For example, if CB = 300pF, then tR[min] = tF[min] = 50ns. |
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