A 1-V 1.8-MHz CMOS switched-opamp SC filter with rail-to-rail output swing

被引：88
|
作者：
Baschirotto, A
Castello, R
机构：
[1] Dipartimento di Elettronica, Universitá di Pavia
来源：
IEEE JOURNAL OF SOLID-STATE CIRCUITS | 1997年 / 32卷 / 12期
关键词：
switched-capacitor filters;
D O I：
10.1109/4.643656
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A low-voltage switched capacitor (SC) filter operated from a single 1 V supply and realized in a standard 0.5-mu m CMOS technology is presented. Proper operation is obtained using the switched-opamp technique without any clock voltage multiplier or low-threshold devices. This makes the circuit compatible with future deep submicrometer technology. As opposed to previous switched-opamp implementations, the filter uses a fully differential topology. This allows operation with a rail-rail output swing and reduction of the number of opamps required to build high-order infinite impulse response (IIR) filters. On the other hand, a law-voltage common-mode feedback (CMFB) circuit is required. In addition, the circuit uses an opamp which is only partially turned off during the off phase. This enables an increase in the maximum sampling frequency. The filter implements a bandpass response (f(s)/f(o) = 4, Q = 7) and it has been characterized with a 1.8 MHz sampling frequency. Its power consumption is about 160 mu W. The filter is still fully functional down to 0.9 V supply voltage.
引用
收藏
页码：1979 / 1986
页数：8
相关论文
共 50 条
  • [21] 1-V 9-bit pipelined switched-opamp ADC
    Waltari, M
    Halonen, KAI
    IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2001, 36 (01) : 129 - 134
  • [22] ±0.9V switched-capacitor CMOS multiplier with rail-to-rail input
    Grech, I
    Micallef, J
    Vladimirova, T
    ELECTRONICS LETTERS, 1999, 35 (20) : 1688 - 1689
  • [23] 1-Gb/s, 0.7-μm CMOS optical receiver with full rail-to-rail output swing
    Department Elektrotechniek, Katholieke Universiteit Leuven, Heverlee B-3001, Belgium
    IEEE J Solid State Circuits, 7 (971-977):
  • [24] A 1-Gb/s, 0.7-μm CMOS optical receiver with full rail-to-rail output swing
    Ingels, M
    Steyaert, MSJ
    IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1999, 34 (07) : 971 - 977
  • [25] A 3-14V Rail-to-Rail Constant gm Opamp in Conventional 0.18μm CMOS Process
    Lee, Edward K. F.
    PROCEEDINGS OF THE IEEE 2009 CUSTOM INTEGRATED CIRCUITS CONFERENCE, 2009, : 467 - 470
  • [26] 1-V rail-to-rail bulk-driven CMOS OTA with enhanced gain and gain-bandwidth product
    Carrillo, JM
    Torelli, G
    Pérez-Aloe, R
    Duque-Carrillo, JF
    Proceedings of the 2005 European Conference on Circuit Theory and Design, Vol 1, 2005, : 261 - 264
  • [27] A Sub-0.5V, 1.5μW Rail-to-Rail Constant gm Opamp and Its Filter Application
    Lee, Edward K. F.
    2012 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS 2012), 2012, : 197 - 200
  • [28] 1 V rail-to-rail constant-gm CMOS op amp
    Lu, C. -W.
    Hsiao, C. -M.
    ELECTRONICS LETTERS, 2009, 45 (11) : 529 - U64
  • [29] A 1-V 12-bit switched-opamp pipelined ADC with power optimization
    Nabavi, Mohammad Reza
    Lotfi, Reza
    2006 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-11, PROCEEDINGS, 2006, : 5359 - +
  • [30] Design of low voltage low power CMOS OP-AMPS with rail-to-rail input/output swing.
    Gopalaiah, SV
    Shivaprasad, AP
    Panigrahi, SK
    17TH INTERNATIONAL CONFERENCE ON VLSI DESIGN, PROCEEDINGS: DESIGN METHODOLOGIES FOR THE GIGASCALE ERA, 2004, : 57 - 61
12345