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