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Maxim > Design Support > Technical Documents > Application Notes > Amplifier and Comparator Circuits > APP 4362
Maxim > Design Support > Technical Documents > Application Notes > Measurement Circuits > APP 4362
Maxim > Design Support > Technical Documents > Application Notes > Miscellaneous Circuits > APP 4362
Keywords: Triangular wave generator
APPLICATION NOTE 4362
Precision Triangular-Wave Generator Uses a
Single IC
By: Akshay Bhat, Senior Strategic Applications Engineer
Jun 28, 2010
Abstract: This application note outlines the implementation of a single-supply, triangular wave oscillator
using the MAX9000 and some passive components. The application circuit uses an op amp, comparator,
and a voltage reference as active building blocks. The MAX9000 is chosen because it integrates these
three components.
Introduction
The linearity of triangular waveforms makes triangular wave generators useful in many "sweep" circuits
and test equipment. For example, switched-mode power supplies and induction motor-control circuits
often use a triangular wave oscillator as part of the pulse width modulator (PWM) circuit. This article
presents a compact, triangular wave oscillator using a single MAX9000 IC and some passive
components. The MAX9000 device family integrates a high-speed operational amplifier, a high-speed
comparator, and a precision bandgap reference.
Circuit Description
Figure 1. Design concept for a basic triangular-wave generator.
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