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Archive for the ‘Amplifier’ Category

Stability Analysis of Voltage Feedback Op Amps

January 3, 2014 Leave a comment

ABSTRACT   

This report presents an analysis of the stability of voltage-feedback operational amplifiers (op amps) using circuit performance as the criteria to attain a successful design. It discusses several compensation techniques for op amps with and without internal compensation.

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Categories: 1.ANALOG, Amplifier

Op Amp Input and Output Common-Mode and Differential Voltage Range

January 3, 2014 Leave a comment

INPUT AND OUTPUT VOLTAGE RANGE

Some practical basic points are now considered regarding the allowable input and output voltage ranges of a real op amp. This obviously varies with not only the specific device, but also the supply voltage. While we can always optimize this performance point with device selection, more fundamental considerations come first.

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Categories: 1.ANALOG, Amplifier

Understanding Op Amp Parameters

January 3, 2014 Leave a comment

Introduction

This chapter is about op amp data sheet parameters. The designer must have a clear un- derstanding of what op amp parameters mean and their impact on circuit design. The chapter is arranged for speedy access to parameter information. Their definitions, typical abbreviations, and units appear in Section 11.2. Section 11.3 digs deeper into important parameters for the designer needing more in-depth information.

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Categories: 1.ANALOG, Amplifier

January 3, 2014 Leave a comment

Differential Amplifiers

• Differential & Single-Ended Operation
– A single-ended signal is taken with respect to a fixed potential (usually ground).

– A differential signal is taken between two nodes that have equal and opposite signals with respect to a “common mode” voltage and also equal impedances to a fixed potential (usually ground). …

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Categories: 1.ANALOG, Amplifier

Understanding Op-amp Specifications

April 3, 2013 Leave a comment

Introduction

This article explains the various parameters of an operational amplifier and how to interpret the data sheet. Be aware that different manufacturers use slightly different terminology. The data sheet generally has three columns for minimum, typical, and maximum values. It does not make sense to list values in all three columns so data is only listed for the appropriate columns for a given item. This is either minimum and typical or typical and maximum. For some parameters that are not controlled there may only be a typical value given.

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Categories: 1.ANALOG, Amplifier

Understanding Operational Amplifier Specifications

April 3, 2013 Leave a comment

Abstract

Selecting the right operational amplifier for a specific application requires you to have your design goals clearly in mind along with a firm understanding of what the published specifications mean. This paper addresses the issue of understanding data sheet specifications.

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Categories: 1.ANALOG, Amplifier

DC gain of the folded cascode amplifier

April 1, 2013 Leave a comment

 

Let’s learn the easiest way to obtain voltage gain of folded cascode amplifier.

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Categories: 1.ANALOG, Amplifier