Datenblatt-Suchmaschine für elektronische Bauteile |
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TS3004 Datenblatt(PDF) 2 Page - Silicon Laboratories |
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TS3004 Datenblatt(HTML) 2 Page - Silicon Laboratories |
2 / 3 page AN856 2 Rev. 1.0 Substituting the output frequency of 1 Hz and a standard capacitor value of 0.1 μF, the necessary R C resistance of 7.14 M can be calculated. In setting the output frequency of both timers, the TS3004 offers an advantage because it only requires one component instead of the two external components required by the CMOS555. To compare the supply currents of both timers side-by-side, a few supply voltages were applied while both supply currents were recorded. Table 1 displays the results. As shown in Table 1, at 1.5 V, the TS3004 consumes a factor of 26 less supply current. With a 2.5 V supply, the TS3004 consumes a factor of 40 less supply current. With a 3.3 V supply, the TS3004 consumes a factor of 38 less supply current. In summary, the CMOS555 IC uses much more supply current than can be supported in battery or portable applications. For all voltages within its supply range, the TS3004 saves a significant amount of supply current, which can help extend battery life in battery-powered applications. These applications include ultra-long life, low-frequency battery-powered/portable applications, such as micropower PWM control, pulse-position modulation control, clock generation, and sequential timing. The TS3004 can also be used as a low-parts-count micropower oscillator and compact replacement for crystal and ceramic oscillators. For additional information, see the following: TS3004 timer IC TS3004 data sheet Silicon Labs’ family of timer ICs Table 1. Supply Current per Supply Voltage Supply Voltage TS3004 Supply Current CMOS555 Supply Current 1.5 V 1.9 μA50 μA 2.5 V 2.0 μA81 μA 3.3 V 2.3 μA87 μA |
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