Circuitry for single cell operation
Jim Williams
Portable, battery-powered operation of electronic apparatus has become increasingly desirable. Medical, remote data acquisition, power monitoring and other applications are good candidates for battery operation. In some circumstances, due to space, power or reliability considerations, it is preferable to operate the circuitry from a single 1.5V cell. Unfortunately, a 1.5V supply eliminates almost all linear ICs as design candidates. In fact, the LM10 op amp-reference and the LT®1017/LT1018 comparators are the only IC gain blocks fully specified for 1.5V operation. Further complications are presented by the 600mV drop of silicon transistors and diodes. This limitation consumes a substantial ...
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