# title
A 75 MHz BW 68dB DR CT-EA Modulator with Single Amplifier Biquad Filter and a Broadband Low-power Common-gate Summing Technique

# abstract
A wide bandwidth, power efficient continuous-time $SigmaDelta$ modulator $(	ext{CT}SigmaDelta 	ext{M})$ is Presented. The modulator introduces a 3rd order filter implemented with a lossless integrator and a multiple-feedback (MFB) single-amplifier biquad (SAB) with embedded loop stability compensation. An active summing block is implemented with a common-gate amplifier followed by a transimpedance amplifier (TIA) that achieves optimum bandwidth (BW) vs power consumption tradeoff, making it suitable for over GHz operation. Fabricated in 40 nm CMOS, and clocked at 3.2 GHz, the $	ext{CT}SigmaDelta 	ext{M}$ achieves a signal-to-noise and distortion ratio (SNDR) of 64.9 dB over 75 MHz BW while consuming 22.8 mW of power. The obtained Walden's Figure of Merit (FoM) is 106 fJ/conv-step.

# publicationOutlet
2015 Symposium on VLSI Circuits (VLSI Circuits)

# nameOfConference
2015 Symposium on VLSI Circuits (VLSI Circuits)

# publisher.label
Institute of Electrical and Electronics Engineers (IEEE)

# authorList[]
Briseno-Vidrios, C., Edward, A., Shafik, A., Palermo, S., & Silva-Martinez, J.