A 1 V 1 mW digital-audio ΔΣ modulator with 88 dB dynamic range using local switch bootstrapping

Author

Dessouky, Mohamed ; Kaiser, Andreas

Author_Institution

Paris VI Univ., France

fYear

2000

fDate

2000

Firstpage

13

Lastpage

16

Abstract

A 1 V, 1 mW, 14 bit delta-sigma modulator in a standard CMOS 0.35-μm technology is presented. A modified symmetrical bootstrapped switch is used in order to allow rail-to-rail signal switching. A single-loop third-order topology with an oversampling ratio of 100 achieves a dynamic range of 88 dB, a peak SNR of 87 dB and a peak SNDR of 85 dB in a signal bandwidth of 25 kHz

Keywords

CMOS integrated circuits; Hi-Fi equipment; analogue-digital conversion; delta-sigma modulation; low-power electronics; mixed analogue-digital integrated circuits; modulators; 0.35 micron; 1 V; 1 mW; 14 bit; 25 kHz; 87 dB; ASIC; CMOS technology; delta-sigma modulator; digital-audio ΔΣ modulator; local switch bootstrapping; low voltage operation; modified symmetrical bootstrapped switch; oversampling ratio; rail-to-rail signal switching; single-loop third-order topology; Capacitors; Delay; Delta modulation; Digital modulation; Dynamic range; Impedance; Switches; Switching circuits; Topology; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference, 2000. CICC. Proceedings of the IEEE 2000

Conference_Location

Orlando, FL

Print_ISBN

0-7803-5809-0

Type

conf

DOI

10.1109/CICC.2000.852608

Filename

852608