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AN-356: User's Guide to Applying & Measuring Operational Amplifier Specifications - AN-356 Analog Devices Application Notes  (app note added 6/06)

AN-589: Ways to Optimize the Performance of a Difference Amplifier - AN-589 Analog Devices Application Notes  (app note added 6/06) This Application Note presents several ways to build and optimize  performance of a discrete difference amplifier. It also recommends amplifiers that will make  overall solution cost/performance competitive with monolithic instrument amplifiers.

AN867: Temperature Sensing with a Programmable Gain Amplifier - Microchip Application Note Published 26-Jun-03  (app note added 2/06)

Analog Input Circuit Serves Any MicroController - 12/20/01 EDN-Design Ideas: The simple ADC in Figure 1 is perfect for getting analog signals into a purely digital microcontroller. Using just five surface-mount parts, you can assemble it for less than 50 cents (1000), which is approximately half  cost of a single-chip- ADC approach in  same volume. Moreover, this design takes only one pin from  microcontroller to operate.....(design idea added 10/03)

Circuit Performs High Speed Voltage to Current Current to Current Conversion - 07/25/02 EDN-Design Ideas:   In low-power, single-supply analog applications, it is often desirable to maintain precise control of voltages much greater than the positive-supply rail. The circuit in Figure 1 allows you to amplify the input voltage, VIN, by a factor, A, which resistors R1 and R2 set. The output voltage, VOUT, equals AVIN, where A=R2/(R1+R2).....(design idea added 01/04)

High Gain Amplifier Circuit - In this project a 2-transistor amplifier is built on the first section of the Printed Circuit Board and a touch plate is connected to it so that the LED turns on when the plate is touched….(project added 04/09)

LED Driver Delivers Constant Luminosity - 06/12/03 EDN-Design Ideas: (design idea added 1/05)

LX5506M High Gain, High Efficiency Power Amplifier Also see LX5506 & LX5506B-AN-36 - Application Note 36 from Microsem  (app note added 6/06)

Network Imitates Thermocouples - 11/08/01 EDN-Design Ideas: Thermocouples find widespread use for temperature measurement in systems. During system design or testing, you must observe the system's response at different temperatures. However, it's inconvenient to heat a thermocouple.....(design idea added 09/03)

Positive Feedback Yields Fast Amplifier with Precision DC Offset - 04/01/04 EDN-Design Ideas: Some signal-processing applications require a high-speed, low-noise, dc-coupled amplifier that incorporates a precision dc-offset adjustment. Examples include oscilloscopes, in which the offset adjustment typically acts as a "position" control), ADC-input gain blocks, and scanning-ion-beam-microscopy deflection circuitry.....(design idea added 1/05).....(design idea added 1/05)

Precise Gain Without External Resistors - DN348  Design Notes (Linear Technology)  (app note added 1/06)

Programmable Gain Amplifier is Low Cost - 01/18/01 EDN-Design Ideas: Numerous programmable-gain amplifiers are available, but a simple solution provides the option of using 256 gain steps with an 8-bit DAC and higher steps with higher bit DACs (Figure 1). According to the inverting-amplifier configuration of an op amp, the output voltage is VOUT=VIN(RF/RIN),.....(design idea added 09/05)

Sensing Light with a Programmable Gain Amplifier - Microchip Application Note Published 28-Mar-03  (app note added 6/06)

Simple 0 to 24 dB Gain Amplifier & Balanced Line Driver - AS022 Jenson Transformer Application Note  (app note 6/07)

Temperature Sensing with a Programmable Gain Amplifier - Microchip Application Note Published 26-Jun-03  (app note added 2/06)

Transistor Preamp - A versatileHigh Gain design. Can be Frequency compensatated for Various applications including Dynamic MicrophonesTape and Phono Applications....(design added 12/08)

Transmitter Accurately Transfers Voltage Input - 05/15/03 EDN-Design Ideas: When you connect remote sensors to a central process controller, a simple, robust, and commonly used interface is the 4to 20-mA loop. The advantages of this current loop include the simplicity of just two twisted wires that share both power and signal, the loop's high noise immunity in harsh environments,.....(design idea added 9/03)

User's Guide to Applying & Measuring Operational Amplifier Specifications - AN-356 Analog Devices Application Notes  (app note added 6/06)

Voltage to Current Converter Makes a Flexible Current Reference - 09/18/03 EDN-Design Ideas: The voltage-to-current converter in Figure 1 can both source and sink current. The circuit is more flexible than some traditional current references that require different topologies for current sourcing and sinking. Also, you can easily adjust the value of the current reference by simply adjusting the circuit's input voltage.....(design idea added 12/04)

Ways to Optimize the Performance of a Difference Amplifier - AN-589 Analog Devices Application Notes  (app note added 6/06) This Application Note presents several ways to build and optimize the performance of a discrete difference amplifier. It also recommends amplifiers that will make the overall solution cost/performance competitive with monolithic instrument amplifiers.