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ADS4128 bảng dữ liệu(PDF) 21 Page - Texas Instruments |
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ADS4128 bảng dữ liệu(HTML) 21 Page - Texas Instruments |
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21 / 61 page ![]() PowerSupply AVDD,DRVDD RESET SEN t 1 t 2 t 3 ADS4128 www.ti.com SBAS578 – MAY 2012 RESET TIMING CHARACTERISTICS NOTE: A high pulse on the RESET pin is required in the serial interface mode in case of initialization through hardware reset. For parallel interface operation, RESET must be permanently tied high. Figure 11. Reset Timing Diagram RESET TIMING REQUIREMENTS Typical values are at +25°C and minimum and maximum values are across the full temperature range: TMIN = –40°C to TMAX = +85°C, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Delay from power-up of AVDD and DRVDD to RESET t1 Power-on delay 1 ms pulse active 10 ns Pulse width of active RESET signal that resets the t2 Reset pulse width serial registers 1(1) µs t3 Delay from RESET disable to SEN active 100 ns (1) The reset pulse is needed only when using the serial interface configuration. If the pulse width is greater than 1 µs, the device can enter the parallel configuration mode briefly and then return back to serial interface mode. Copyright © 2012, Texas Instruments Incorporated Submit Documentation Feedback 21 Product Folder Link(s): ADS4128 |
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