论文信息 - A continuous-time /spl Sigma//spl Delta/ modulator with 88dB dynamic range and 1.1MHz signal bandwidth

A continuous-time /spl Sigma//spl Delta/ modulator with 88dB dynamic range and 1.1MHz signal bandwidth

A baseband continuous-time multi-bit /spl Sigma//spl Delta/ modulator achieves 88dB dynamic range over a 1.1MHz signal bandwidth consuming 62mW from a 3.3V supply. Excess loop delay encountered in conventional continuous-time modulators is eliminated by the proposed architecture. Clock-jitter sensitivity is considerably reduced compared with prior designs.

E. Sánchez-Sinencio | S. Yan

[1] R. H. Walden,et al. A 3.2-GHz second-order delta-sigma modulator implemented in InP HBT technology , 1995, IEEE J. Solid State Circuits.

[2] Chih-Kong Ken Yang,et al. A 14-bit, 10-Msamples/s D/A converter using multibit /spl Sigma//spl Delta/ modulation , 1999 .

[3] E. J. V. D. Zwan,et al. A 10.7 MHz IF-to-baseband ΣΔ A/D conversion system for AM/FM radio receivers , 2000 .

[4] Kathleen Philips,et al. WA 20.4 A 10.7MHz IF-to-Baseband A/D Conversion System for AM/FM Radio Receivers , 2000 .

[5] I. Fujimori,et al. A 90 dB SNR, 2.5 MHz output rate ADC using cascaded multibit /spl Delta//spl Sigma/ modulation at 8x oversampling ratio , 2000, 2000 IEEE International Solid-State Circuits Conference. Digest of Technical Papers (Cat. No.00CH37056).

[6] K. Philips,et al. A 3.3mW /spl Sigma//spl Delta/ modulator for UMTS in 0.18/spl mu/m CMOS with 70dB dynamic range in 2MHz bandwidth , 2002 .