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Amplifier Circuits:  Variable Gain , Page 2
Variable Gain Amplifiers:  #'s - A      B - F      G - O      P - Z
Last Updated on: Thursday, May 15, 2008 09:07 AM
Amplifier -- Main Page
Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Biasing and 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 and Op Amps Combine to Build Programmable Gain Amplifier, Part 1:  AN-320A Analog Devices Application Notes  (app note added 2/06)

CMOS Multiplying DACs and Op Amps Combine to Build Programmable Gain Amplifier, Part 1:  AN-320B Analog Devices Application Notes  (app note added 2/06)

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 / (added 4/02)   -digitally control an amplifiers gain over a ±40-dB range gain Resolution of1.25 dB

Diode Compensates Distortion in Amplifier Stage:  09/16/04 EDN Design Ideas  /  (added 1/05)  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, ......

Errors and 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 2/06) 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.

Find Op Amp Noise with Spreadsheet:  AN-253 Analog Devices Application Notes  (app note added 2/06)

Force/Sense Connection Eliminates Multiplexer on Resistance Error:  01/22/04 EDN Design Ideas  /  (added 1/05)  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....

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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