A low-power 2nd-order CT delta-sigma modulator with a single operational amplifier

被引：4
|
作者：
Radjen, Dejan [1 ]
Anderson, Martin [2 ]
Sundstrom, Lars [2 ]
Andreani, Pietro [1 ]
机构：
[1] Lund Univ, S-22100 Lund, Sweden
[2] Ericsson AB, S-22183 Lund, Sweden
来源：
ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING | 2014年 / 80卷 / 03期
关键词：
Delta-Sigma; Single-operational-amplifier; Low-power; Continuous time; RC loop filter; COMPENSATION; SNDR;
D O I：
10.1007/s10470-014-0335-8
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
We present a 2nd-order 4-bit continuous-time (CT) delta-sigma modulator (DSM) employing a 2nd-order loop filter with a single operational amplifier. This choice strongly reduces the power consumption, since operational amplifiers are the most power hungry blocks in the DSM. The DSM has been implemented in a 65 nm CMOS process, where it occupies an area of . It achieves an SNDR of 64 dB over a 500 kHz signal bandwidth with an oversampling ratio of 16. The power consumption is from a 800 mV power supply. The DSM figure-of-merit is 59 fJ/conversion. The CT DSM is well suited for the receiver of an ultra-low-power radio.
引用
收藏
页码：387 / 397
页数：11
相关论文
共 50 条
  • [1] A low-power 2nd-order CT delta-sigma modulator with a single operational amplifier
    Dejan Radjen
    Martin Anderson
    Lars Sundström
    Pietro Andreani
    Analog Integrated Circuits and Signal Processing, 2014, 80 : 387 - 397
  • [2] A Low-Power 2nd-order CT ΔΣ Modulator with a Single Operational Amplifier
    Radjen, Dejan
    Andreani, Pietro
    Anderson, Martin
    Sundstrom, Lars
    2013 NORCHIP, 2013,
  • [3] A low-power 2nd-order CT delta-sigma modulator with an asynchronous SAR quantizer
    Radjen, Dejan
    Anderson, Martin
    Sundstrom, Lars
    Andreani, Pietro
    ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, 2015, 84 (03) : 409 - 420
  • [4] A low-power 2nd-order CT delta–sigma modulator with an asynchronous SAR quantizer
    Dejan Radjen
    Martin Anderson
    Lars Sundström
    Pietro Andreani
    Analog Integrated Circuits and Signal Processing, 2015, 84 : 409 - 420
  • [5] A passive delta-sigma modulator for low-power applications
    Guessab, S
    Benabes, P
    Kielbasa, R
    2004 47TH MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL III, CONFERENCE PROCEEDINGS, 2004, : 295 - 298
  • [6] A Passive 2nd-Order Sigma-Delta Modulator for Low-Power Analog-to-Digital Conversion
    Roy, Angsuman
    Baker, R. Jacob
    2014 IEEE 57TH INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS), 2014, : 595 - 598
  • [7] 2ND-ORDER DELTA-SIGMA MODULATOR WITH 2-1 BIT QUANTIZERS
    TAN, N
    ERIKSSON, S
    ELECTRONICS LETTERS, 1992, 28 (16) : 1486 - 1488
  • [8] A Low-Power 2nd-order CT ΔΣ Modulator with an Asynchronous SAR Quantizer
    Radjen, Dejan
    Anderson, Martin
    Sundstrom, Lars
    Andreani, Pietro
    2014 NORCHIP, 2014,
  • [9] A Low-Power 2nd-Order Delta-Sigma ADC with an Inverter-Based Zero-Crossing Detector
    Min, Dong-Jick
    Choi, Sun Youl
    Shim, Jae Hoon
    2018 25TH IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, CIRCUITS AND SYSTEMS (ICECS), 2018, : 817 - 820
  • [10] Distortion and Its Suppression in Low-Power Delta-Sigma Modulator
    Ishikuro, Hiroki
    2017 IEEE 60TH INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS), 2017, : 452 - 455
12345