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NCS2200SN1T1 Datasheet(PDF) 9 Page - ON Semiconductor |
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NCS2200SN1T1 Datasheet(HTML) 9 Page - ON Semiconductor |
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9 / 18 page  NCS2200 Series http://onsemi.com 9 OPERATING DESCRIPTION The NCS2200 Series is an industry first sub−one volt, low power comparator family. This series is designed for rail−to−rail input and output performance. These devices consume only 10 mA of supply current while achieving a typical propagation delay of 1.1 ms at a 20 mV input overdrive. Figures 10 and 11 show propagation delay with various input overdrives. This comparator family is guaranteed to operate at a low voltage of 0.85 V up to 6.0 V. This is accomplished by the use of a modified analog CMOS process that implements depletion MOSFET devices. The common−mode input voltage range extends 0.1 V beyond the upper and lower rail without phase inversion or other adverse effects. This series is available in the SOT−23−5 and SOT−23−6 package. Additionally, the NCS2200 device is available in the tiny QFN 2x2.2 package and the SC70−5 package. The SOT−23−6 features the enable function, which can be externally controlled. This feature allows significantly lower current consumption of 0.3 mA. This makes the devices suitable for implementation in power sensitive applications such as portable electronics. The enable function is active high when connected to the VCC pin. When the enable pin is driven low (device disabled), output tri−state mode is activated. The device will remain in this mode and will not respond to any changes at the inputs of the comparator. In order to pull the device out of tri−state mode, the enable upper voltage threshold must be met. Figure 15 shows the enable input voltage required to either enable or disable the device, with a variance in supply voltage. In addition, these devices have a typical internal hysteresis of "8.0 mV. This allows for greater noise immunity and clean output switching. Output Stage The NCS2200/1 has a complementary P and N Channel output stage that has capability of driving a rail−to−rail output swing with a load ranging up to 5.0 mA. It is designed such that shoot−through current is minimized while switching. This feature eliminates the need for bypass capacitors under most circumstances. The NCS2202/3 has an open drain N−channel output stage that can be pulled up to 6.0 V (max) with an external resistor. This facilitates mixed voltage system applications. Figure 17. NCS2200/1SNxT1 Complementary Output Configuration Figure 18. NCS2202/3SNxT1 Open Drain Output Configuration VCC VEE Output IN (+) IN (−) VCC VEE Output IN (+) IN (−) |
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