DAC & Op Amp Generate Variable Negative Control Voltage:  Maxim Application Notes / 1074 / Feb-05  (app note added 6/06)

DAC and Op Amp Provide Variable Control Voltage:  12/06/01 EDN Design Ideas  /  (added 12/04)  Early DACs contained standard R-2R ladder networks, and produced a negative output voltage. These early DACs, such as the MAX7837/7847 and the MAX523, require both positive and negative supply rails to accommodate their negative output. With the transition to single-supply ICs, however, many modern DACs operate with a single supply rail and an inverted R-2R ladder network. ...

Designing Operational Amplifier Oscillator Circuits for Sensor Applications:  Microchip Application Note Published 18-Jun-03   (app note added 2/06)

Designing with a New Super Fast Dual Norton Amplifier :  National Semiconductor Application Note 04-Nov-1995 (app note added 4/02)

Differential Front-End for the LTC2400 Rail-To-Rail Circuit Converts Differential Signals to Single-Ended Signals and Operates on Single or Dual Supplies Where Resolution is More Important Than Accuracy:  Design Solutions 2  Design Notes (Linear Technology)  (app note added 1/06)

Digital Nulling of Precision Op Amps:  AB-3 Analog Devices Application Notes  (app note added 6/06)

Digital Potentiometer Autonulls Opamp:  10/22/98 EDN-Design Ideas / (added 6/06)  

Digital Quality Microphone Pre Ampl. using the Model 425 Opamp :  (diagram added 6/03)

Discrete Differential Amplifier :  Circuit Ideas for Designers Application Notes Advanced Linear Devices, Inc.  (app note added 6/06)

Driving Capacitive Loads with Op Amps:  Microchip Application Note Published 30-Sep-03   (app note added 2/06)

Dual 25µV Micropower Op Amp Fits in 3mm X 3mm Package:  DN331  Design Notes (Linear Technology) (app note added 1/06)

Dual Opamp Doubles Output Current:  09/12/96 EDN-Design Ideas / (added 4/02)  

Dual Polarity Amplifier has Digital Control:  09/12/96 EDN-Design Ideas / (added 4/02)  

Dual Universal Precision Op Amp Evaluation Board:  AN-763 Analog Devices Application Notes  (app note added 2/06)

Fast Op Amps Operate Rail-To-Rail on 2.7V:  DN241  Design Notes (Linear Technology) (app note added 1/06)

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, Active Filter, HDSL Transceiver, and Transformer Drive Circuits.

Feedback Network Silences Opamp Resistor Noise:  09/12/96 EDN-Design Ideas / (added 4/02)  

Feedforward Compensation Speeds Op Amp:  National Semiconductor Application Note   (app note added 2/06)

FiLM Optical Record Amplifier W/ Noise Reduction Circuit :  (diagram added 6/03)

Find Op Amp Noise with Spreadsheet:  AN-253 Analog Devices Application Notes  (app note added 6/06)

Fixed Gain Op Amps Simplify Filter Design:  07/06/00 EDN Design Ideas /  (added 2/06) 

FM Radio Transmitters with Opamp :  (circuit / schematic added 5/03)

Frequency Dependant Negative Resistor (Using Opamps):  (electronic circuit added 5/02)

Get More Power Out of Dual or Quad Op-Amps:  National Semiconductor Application Note   (app note added 6/06)

Head Set Intercom :  (diagram added 6/03)

High Performance Op Amps Deliver Precision Waveform Synthesis:  DN306  Design Notes (Linear Technology) (app note added 1/06)

High Precision Rail-to-Rail Output Operational Amplifier:  National Semiconductor Application Note LMV2001 April 2004 (app note added 6/06))

High Speed Universal Op Amp Evaluation Board with Exposed Paddle:  AN-751 Analog Devices Application Notes  (app note added 2/06)

I Feedback Amplifier Puts Parasites to Work:  11/09/95 EDN-Design Ideas / (added 4/02)  

IC Op Amp Beats FETs on Input Current:  National Semiconductor Application Note   (app note added 2/06)

IFB Intercom :  (diagram added 6/03)

Ignore Input Range Limits in Wideband Opamp:  07/16/98 EDN-Design Ideas / (added 4/02)  

Inductors 6mh to 1600mh :  (diagram added 6/03)

Instrumentation Amp Swings Rail-to-Rail:  03/03/94 EDN-Design Ideas / (added 6/06)  You can combine an instrumentation amplifier and an inexpensive CMOS op amp to get the better of two worlds: the precision of a bipolar instrumentation amp and the5V single-supply operation of the CMOS op amp. The characteristics of such a circuit depend first on the instrumentation amp you use.....

Keep the Heat Down in Power Op Amps:  02/15/00 EDN-Design Ideas  / (added 11/05) When you include a power op amp, such as PA05 from Apex Microtechnology, in your design, it is desirable to minimize the supply-to-output differential to a minimum to reduce power dissipation and to fully exploit the amplifier's output range. Our goal was to design a power amplifier to yield 70V p-p output at.....