DAC & Op Amp Generate Variable Negative Control Voltage:  Maxim Application Notes / 1074 / Feb-05  (Circuit / schematic design 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   (added 2/06)

Designing with a New Super Fast Dual Norton Amplifier :  National Semiconductor Application Note 04-Nov-1995 (Electronic Schematic / circuit 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)  (added 1/06)

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

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

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

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

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

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

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

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

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

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

Fast Rail-to-Rail Operational Amplifiers Ease Design Constraints in Low Voltage High Speed Systems:  AN-417 - Analog Devices Application Notes  (Circuit / schematic design 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 / (Electronic Schematic / circuit added 4/02)  

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

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

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

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

FM Radio Transmitters with Opamp :  (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   (Circuit / schematic design added 6/06)