A Compensation-Based Optimization Methodology for Gain-Boosted OPAMP

Abstract

A gain-boosted OPAMP design methodology is presented. The methodology provides a systematic way of gain-boosted OPAMP optimization in terms of AC response and settling performance. The evolution of the major poles and zeros of the gain-boosted OPAMP is studied, which reveals the rationale behind our optimization effort. A sample OPAMP was implemented in 0.6 micrometere CMOS technology. It achieves a DC gain of 88 decibels, a bandwidth of 725MHz with 490 phase margin and a 0.1 settling time of 4.5ns. The sample/hold front-end of a 12-bit 5OMSample/s ADC was implemented with this OPAMP. It achieves an SNR of 78 decibels for an 8.1MHz input signal.

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Document Details

Document Type
Technical Report
Publication Date
May 14, 2004
Accession Number
ADA423112

Entities

People

  • Jie Yuan
  • Nabil Farhat

Organizations

  • University of Pennsylvania

Tags

Communities of Interest

  • Advanced Electronics
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Algorithms
  • Amplifiers
  • Bandwidth
  • Bench Tests
  • Capacitance
  • Circuits
  • Compensation
  • Complementary Metal-Oxide Semiconductors
  • Frequency
  • Frequency Response
  • Gain
  • High Gain
  • Military Research
  • Optimization
  • Personal Information Managers
  • Simulations
  • Two Dimensional

Readers

  • Integrated Circuit Design and Technology.