Bipolar Voltage and Current Reference (VCR) Design Tutorial
Abstract: Most analog integrated circuits (IC’s) require biasing currents and voltages that are power supply
independent, temperature controlled and insensitive to manufacturing process variations. To that end, the VCR (Voltage
and Current Reference) macro cell described herein, provides basic circuits that establish a foundation for achieving
Bipolar Voltage Feedback Opamp (VF-OPAMP) Design Tutorial
Abstract: In custom analog integrated circuit (IC) designs, there are many occasions where a general purpose Voltage Feedback
Operational Amplifier (VF-OpAmp) is useful. If the application calls for differential inputs, high input impedance, low output impedance,
common mode isolation and current drive capability, the VF-OpAmp presented herein provides a basic topology for achieving these
Bipolar Current Feedback Opamp (CF-OPAMP) Design Tutorial
Abstract: The primary advantage of “current feedback”
operational amplifiers (CF-OpAmps), over other types of OpAmps, is their ability to achieve fast slew rates at small quiescent power
levels. This is especially advantageous for pulse applications where most of the power is required during the pulse edges. The way
CF-OpAmps achieve fast slew rates at small quiescent power levels is by generating the internal currents, required for fast slew rates,
dynamically through the negative input terminal.
Bipolar Voltage Rail-to-Rail Opamp (RR-OPAMP) Design Tutorial
Abstract: The primary advantage of "rail to rail" operational
amplifiers (RR-OpAmps) over other types of OpAmps is their ability to swing the output voltage close to the power supply rails. This is
achieved by using transistor collectors for the output. This is especially advantageous for small voltage supplies (e.g. 3 volts) where to
operating range is limited.
Bipolar Four-Quadrant Multiplier (4Q-MULT) Design Tutorial
Abstract: In custom analog integrated circuit (IC) designs,
there are many occasions where a general purpose Four Quadrant Multiplier Amplifier (4Q-Mult) is useful. If the application calls for the
multiplication /division of two independent signals, squaring of a single signal, absolute value, square root1, the 4Q-Mult presented herein
provides a basic topology for achieving these requirements.
Bipolar Comparator (CP-AMP) Design Tutorial
Abstract: The primary advantage of comparators is their ability
to switch states with small differences in input voltages. This is achieved by using high gain, not necessarily stable, amplifiers with
hysteresis, and output voltage clamping.
TE_SPICE3 Tutorial Version 1.0
Abstract: This document provides a brief introduction to the use
and syntax for TE_SPICE3. It is intended to get the user started with the simulator armed with the basic skills to perform more complicated
and realistic simulations.
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Site last updated Feb 6,