Low Power Energy

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Sponsored by 33 33 In conclusion, the use of switched capacitor techniques for generating bandgap based voltages has many benefits. Among these is the ease of reducing or even eliminating the errors common to many traditional bandgap circuits. Offset voltage errors are eliminated using a simple offset cancellation technique, mismatch errors of critical components are reduced using capacitors instead of resistors, and better PSR performance is obtained by the differential nature of the circuit. These benefits are in addition to those highlighted in the first part of this series, which included low operating power, flexible output voltage scaling, and compatibility with other switched capacitor circuits. The tradeoff for all these benefits is a modest increase in the complexity of the circuitry which I have found to be well worth the extra effort.p Manufacturers Learn More

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