1st Edition

Analog BiCMOS Design Practices and Pitfalls

By James C. Daly, Denis P. Galipeau Copyright 1999

    Integrated circuits (ICs) don't always work the first time. Many things can and do go wrong in analog circuit designs. There are a number of common errors that often require costly chip redesign and refabrication, all of which can be avoided when designers are aware of the pitfalls. To realize success, IC designers need a complete toolbox-a toolbox filled not only with a solid background in electronics, design concepts and analysis skills, but also with the most valuable tool of all: experience.

    Analog BiCMOS Design offers IC design engineers the learning equivalent to decades of practical experience. Culled from the careers of practicing engineers, it presents the most effective methods and the pitfalls most frequently encountered in the design of biCMOS integrated circuits. Accessible to anyone who has taken a course in electronics, this book covers the basic design of bandgap voltage references, current mirrors, amplifiers, and comparators. It reviews common design errors often overlooked and offers design techniques used to remedy those problems.

    With its complete coverage of basic circuit building blocks, full details of common design pitfalls, and a compendium of design and layout problems and solutions, Analog BiCMOS Design is the perfect reference for IC designers and engineers, fledgling and experienced alike. Read it to reinforce your background, browse it for ideas on avoiding pitfalls, and when you run into a problem, use it to find a solution.

    DEVICES
    Introduction
    Silicon Conductivity
    pn Junctions
    Diode Current
    Bipolar Transistors
    MOS Transistors
    DMOS Transistors
    Zener Diodes
    EpiFets
    DEVICE MODELS
    Introduction
    Bipolar Transistors
    MOS Transistors
    Simple Small Signal Models for Hand Calculations
    CURRENT SOURCES
    Current Mirrors in Bipolar Technology
    Current Mirrors in MOS Technology
    VOLTAGE REFERENCES
    Simple Voltage References
    Vbe Multiplier
    Zener Voltage Reference
    Temperature Characteristics of Ic and Vbe
    Bandgap Voltage Reference
    AMPLIFIERS
    The Common-Emitter Amplifier
    The Common-Base Amplifier
    Common-Collector Amplifiers
    Two-Transistor Amplifiers
    CC-CE and CC-CC Amplifiers
    The Darlington Configuration
    The CE-CB Amplifiers or Cascode
    Emitter-Coupled Pairs
    The MOS Case: The Common-Source Amplifier
    The CMOS Inverter
    The Common-Source Amplifier with Source Degeneration
    The MOS Cascode Amplifier
    The Common Drain (Source Follower) Amplifier
    Source-Couple Pairs
    COMPARATORS
    Comparator with Vbe -Dependent Hysteresis
    The Bandgap Reference Comparator
    Operational Amplifiers
    A Programmable Current Reference
    A Triangle-Wave Oscillator
    A Four-Bit Current Summing DAC
    The MOS Case
    AMPLIFIER OUTPUT STAGES
    The Emitter Follower: A Class A Output Stage
    The Common-Emitter Configuration as a Class A Output Stage
    The Class B (Push-Pull) Output
    The Class AB Output Stage
    CMOS Output Stages
    Overcurrent Protection
    PITFALLS
    IR Drops
    Lateral pnp
    npn Transistors
    Comparators
    Latchup
    Floating Tubs
    Parasitic MOS Transistors
    DESIGN PRACTICES
    Matching
    Electrostatic Discharge Protection (ESD)
    ESD Protection Circuit Analysis
    INDEX
    Each chapter also includes exercises

    Biography

    James C. Daly, Denis P. Galipeau