A Continuous Time Multi-Bit Delta Sigma ADC Using Time Domain Quantizer and Feedback Element Academic Article uri icon


  • A third-order CT ADC that replaces the multi-bit quantizer and feedback DAC by a pulsewidth modulation (PWM) generator and time-to-digital converter (TDC) is implemented in 65 nm CMOS technology. The TDC provides a 50-level binary output code and a time-quantized feedback pulse to the modulator. It is shown that the TDC can achieve 11 bit linearity in time steps without calibration or dynamic element matching. The modulator achieves 68 dB DR in 20 MHz BW, consumes 10.5 mW and occupies 0.15 m2. 2006 IEEE.

published proceedings


altmetric score

  • 3

author list (cited authors)

  • Dhanasekaran, V., Gambhir, M., Elsayed, M. M., Sanchez-Sinencio, E., Silva-Martinez, J., Mishra, C., Chen, L., & Pankratz, E. J.

citation count

  • 50

complete list of authors

  • Dhanasekaran, Vijay||Gambhir, Manisha||Elsayed, Mohamed M||Sanchez-Sinencio, Edgar||Silva-Martinez, Jose||Mishra, Chinmaya||Chen, Lei||Pankratz, Erik J

publication date

  • January 2011