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Amplifier Circuits:  Variable Gain , Page 2
Variable Gain Amplifiers:  #'s - A      B - F      G - O      P - Z
Amplifier -- Main Page
Last Updated on: Monday, October 03, 2011 06:07 PM

 

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Biasing & Decoupling Op Amps in Single Supply Applications -  AN-581 Analog Devices Application Notes  (app note added 2/06)
Bootstrapped IC Substrate Lowers Distortion in JFET Op Amps -  AN-232 Analog Devices Application Notes  (app note added 2/06)
Careful Design Tames High Speed Op Amps -  AN-257 Analog Devices Application Notes  (app note added 2/06)
CMOS Multiplying DACs & Op Amps Combine to Build Programmable Gain Amplifier, Part 1 -  AN-320B Analog Devices Application Notes  (app note added 2/06)
Collection of Amp Applications -  AN-106 Analog Devices Application Notes  (app note added 2/06) Examines Some of  Numerous and Widely Used Applications of  Operational Amplifier
Digital Nulling of Precision Op Amps -  AB-3 Analog Devices App Notes  (app note added 2/06)
Digitally Control Gain over a ±40 DB Range -  09/12/97 EDN-Design Ideas   digitally control an amplifiers gain over a ±40-dB range gain Resolution of1.25 dB....[Design Idea added 4/02] EDN migrating links. This link is not verified.  Search the "title" + "EDN" for new link.
Digitally Programmable Gain & Attenuation Amplifier Design -  AN-137 Analog Devices App Notes  (app note added 2/06)
Diode compensates distortion in Amplifier stage -  09/16/04 EDN-Design Ideas  The voltage amplifier in Figure 1 exhibits smaller nonlinear distortion than does the conventional amplifier in Figure 2. Diode D1 compensates for the distortion inherent in the npn transistor. The voltage gain of a common-emitter amplifier depends on the transconductance of the transistor. The transconductance of the bipolar transistor is as follows  where e is the charge of an electron,.... [Design Idea by S Chekcheyev, Pridnestrovye State University, Moldova]
Dual-Rail Variable DC Power Supply -  Simple add-on for a single-rail supply.  ±2.5V to ±15V output.  (diagram added 6/07)
Errors & Error Budget Analysis in Instrumentation Amplifier Applications -  AN-539 Analog Devices Application Notes  (app note added 2/06) Describes a systematic approach to calculating the overall error in an instrumentation amplifier application.
Fast Rail-to-Rail Operational Amplifiers Ease Design Constraints in Low Voltage High Speed Systems -  AN-417 Analog Devices Application Notes  (app note added 6/06) Movement towards lower power supply voltages is driven by the demand that systems consume less and less power coupled with the desire to reduce the number of power supply voltages in the system. The following applications are discussed: Single-Ended and Differential Input ADC Input Circuits, Video Line Driver,....
Find Op Amp Noise with Spreadsheet -  AN-253 Analog Devices Application Notes  (app note added 2/06)
Find resistor values for arbitrary programmable-amplifier gains -  3-Aug-06 Issue of EDN  Roll your own custom programmable-gain amplifiers.... [Design Idea by Sid Levingston, DML Engineering Inc, Aloha, OR; Edited by Brad Thompson and Fran Granville]
Force/sense connection eliminates multiplexer on-resistance error -  22-Jan-04 Issue of EDN  Digitally controlled gain is an everyday analog-design element. You frequently find this element in an op-amp-based, transimpedance current-to-voltage converter. When you design digital gain control into such a converter, the usual scheme is to arrange things such that a digital multiplexer selects the appropriate feedback resistor for each gain figure.... [Design Idea by Stephen Woodward, Marine Sciences, Chapel Hill, NC]
Full-wave rectifier has programmable gain -  11/09/00 EDN-Design Ideas  The traditional approach to the design of a full-wave rectifier (Figure 1) is to set the gains of IC1 and IC2 to 1 and use the….PDF contains multiple circuits, scroll to find the one of interest.... [Design Idea by Chuck and Chris Wojslaw, Xicor Inc, Milpitas, CA]
Fundamentals of Sampled Data Systems -  AN-282 Analog Devices Application Notes  (app note added 2/06)


 

Variable Gain Amplifiers:  #'s - A      B - F      G - O      P - Z

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