A/D conversion using an asynchronous delta-sigma modulator and a Time-to-Digital converter

被引：22

作者：

Daniels, Jorg ^{[1
]}

Dehaene, Wim ^{[1
]}

Steyaert, Michiel ^{[1
]}

Wiesbauer, Andreas ^{[2
]}

机构：

[1] Katholieke Univ Leuven, ESAT MICAS, Kasteelpk Arenberg 10, B-3001 Heverlee, Belgium

[2] Infineon Technol Austria AG Villach, Villach, Austria

来源：

PROCEEDINGS OF 2008 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-10 | 2008年

关键词：

D O I：

10.1109/ISCAS.2008.4541751

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

An analog to digital conversion scheme based on an Asynchronous Delta Sigma Modulator is presented. It uses a Tlme-to-Digital converter to convert the continuous-time square wave signal produced by the Asynchronous Delta Sigma Modulator to a time-quantized digital signal. The original input signal is then recovered by applying a digital demodulation algorithm derived from general duty-cycle modulation theory. This technique shifts the complexity towards the digital domain and is therefore especially suited for ultra-low voltage technologies beyond 90 am. Simulations show 13 bit accuracy for Btuetooth baseband 500 kHz with a first-order Delta Sigma modulator and a Time-to-Digital Converter with 10 ps resolution running at 12 MHz. Using a second-order feedback system to shape the quantization noise of the Time-to-Digital converter, the bandwidth can be increased to 12 MHz with 12 bit accuracy, suitable for video applications.

引用

页码：1648 / +

页数：2

共 11 条

[1]

BULT K, 2002, P 26 EUR SOL STAT CI

[2]

Gelb A, 1968, Multiple-input describing functions and nonlinear system design

[3]

Hernandez L, 2006, IEEE I C ELECT CIRC, P716

[4] A CMOS time-to-digital converter with better than 10 ps single-shot precision [J].

Jansson, Jussi-Pekka ;

Mantyniemi, Antti ;

Kostamovaara, Juha .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2006, 41 (06) :1286-1296

[5] A high-resolution time interpolator based on a delay locked loop and an RC delay line [J].

Mota, M ;

Christiansen, J .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1999, 34 (10) :1360-1366

[6] A CMOS time-to-digital converter based on a ring oscillator for a laser radar [J].

Nissinen, L ;

Mäntyniemi, A ;

Kostamovaara, J .

ESSCIRC 2003: PROCEEDINGS OF THE 29TH EUROPEAN SOLID-STATE CIRCUITS CONFERENCE, 2003, :469-472

[7] Analysis and design of high-performance asynchronous sigma-delta modulators with a binary quantizer [J].

Ouzounov, S ;

Roza, E ;

Hegt, JA ;

van der Weide, G ;

van Roermund, AHM .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2006, 41 (03) :588-596

[8] Highly efficient xDSL line drivers in 0.35-μm CMOS using a self-oscillating power amplifier [J].

Piessens, T ;

Steyaert, M .

IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2003, 38 (01) :22-29

[9]

RISNENRUOTSALAI.E, 2000, IEEE J SOLID-ST CIRC, V35, P1507

[10] Analog-to-digital conversion via duty-cycle modulation [J].

Roza, E .

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING, 1997, 44 (11) :907-914

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