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Capacitive Array DAC Tool
The tool calculates the fixed and switch-able element capacitance for N binary weighted switch-able capacitance from the nominal capacitance value, specified range coverage and number of binary weighted bits. The tool is useful in circuits like VCO, Filter, etc where switched capacitors are used for tuning against process variations.
2nd Order Low-Q Active Filter Design
This tool calculated the required resistor and capacitor values for a second order low-Q active filter. The routine assumes the input signal swing will be differential peak swing of 80%*VDD. Given the SNR, and the swing the resistor and capacitors can be sized. The filter has all real poles and thus the Q is limited to 0.5.