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A 14-bit delta-sigma ADC with 8× OSR and 4-MHz conversion bandwidth in a 0.18-μm CMOS process

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2 Author(s)
Ruoxin Jiang ; Maxim Integrated Products, Hillsboro, OR, USA ; Fiez, T.S.

A 14-bit 8× oversampling delta-sigma (ΔΣ) analog-to-digital converter (ADC) for wide-band communication applications has been developed. By using a novel architecture, a high maximum out-of-band quantization noise gain (Qmax) is realized, which greatly improves the SNR and tonal behavior. The ADC employs a fifth-order single-stage structure with a 4-bit quantizer. It achieves 82-dB SNDR and 103-dB SFDR at 4-MHz conversion bandwidth with a single 1.8-V power supply.

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:39 ,  Issue: 1 )

Date of Publication:

Jan. 2004

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