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50MHz Thermistor RMS to DC Converter using a dual switched capacitor instrumentation building block

50MHz Thermistor RMS to DC Converter using a dual switched capacitor instrumentation building block

The LTC6943 is a monolithic, charge-balanced, dual switched capacitor instrumentation building block. A pair of switches alternately connects an external capacitor to an input voltage and then connects the charged capacitor across an output port. The internal switches have a break-before-make action. An internal clock is provided and its frequency can be adjusted with an external capacitor. The LTC6943 can also be driven with an external CMOS clock.