Design of the 12-bit Delta-Sigma Modulator using SC Technique for Vibration Sensor Output Processing

The work deals with the design of the 12-bit Delta-Sigma () modulator using switched capacitors (SC) technique. The modulator serves to vibration sensor output processing. The first part describes the modulator parameters definition. Results of the proposed topology ideal model were presented as well. Next, the  modulator circuitry on the transistor level was done. The ONSemiconductor I2T100 0.7 m CMOS technology was used for design. Then, the modulator nonidealities were simulated and implemented into the MATLAB ideal model of the modulator. The model of real  modulator was derived. Consequently, modulator coefficients were optimized. Finally, the corner analysis of the  modulator with the optimized coefficients was simulated. The value of SNDR = 82.2 dB (ENOB = 13.4 bits) was achieved.