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Data Converters
Series Resistor DAC Array  
This tool calculates the fixed and switch-able element resistance for N binary weighted switch-able resistance from the nominal resistance value, specified range coverage and numbere of binary weighted bits. The tool is useful in circuits like Filter, ADC, resistor DAC etc where switched resistors are used for tuning against process variations.

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.

Delta Sigma ADC Performance Calculator   
The tool calculates ideal single loop multilevel quantizer ADC quantization error power and dynamic range from full scale signal power, signal bandwidth, sampling rate, quantizer levels, and order of the Delta-Sigma ADC. The calculation assumes that the quantization noise is white and bandwidth of signal << sampling frequency. Stability constraint on higher order single loop delta-sigma will cause the ADC to operate at lower dynamic range than what is calculated.

Nyquist ADC Performance Calculator  
The tool calculates ADC quantization error power, dynamic range, and aperture uncertainty (less than 0.5LSB) from full scale signal power, number of ADC bits and maximum operating frequency of the Nyquist ADC

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WEB TOOLS
Delta Sigma ADC Performance Calculator (Ideal Single Loop):
The tool calculates ideal single loop multilevel quantizer ADC quantization error power and dynamic range from full scale signal power, signal bandwidth, sampling rate, quantizer levels, and order of the Delta-Sigma ADC.
Nyquist ADC Performance Calculator:
The tool calculates ADC quantization error power, dynamic range, and aperture uncertainty (less than 0.5LSB) from full scale signal power, number of ADC bits and maximum operating frequency of the Nyquist ADC


MATHCAD/MATLAB
Optimal Phase Margin of second order systems:
Mathcad worksheet calculates optimal phase margin for 2nd order systems
Optimal Phase Margin of second order systems (pdf):
.pdf of optimal phase margin routine
Optimal Vdsat for Folded Cascode Opamps:
Mathcad worksheet calculates optimal vdsat of folded cascode current sources
Optimal Vdsat for Folded Cascode Opamps (pdf):
.pdf of optimal vdsat routine