Non-Inverting Amplifier - Freecircuits.net

Electronic circuits schematics diagrams FreeCircuits.net [category-12.html] Non-Inverting Amplifier By internum The Non-Inverting Amplifier, a high input impedance non-inverting circuit. Figure 1 shows a high input impedance non-inverting circuit. This circuit gives a closed-loop gain equal to the ratio of the sum of R1 and R2 to R1 and a closed-loop 3 dB bandwidth equal to the amplifier unity-gain frequency divided by the closed-loop gain. Figure 1. Non-Inverting Amplifier The primary differences between this connection and the inverting circuit are that the output is not inverted and that the input impedance is very high and is equal to the differential input impedance multiplied by loop gain. (Open loop gain/Closed loop gain.) In DC coupled applications, input impedance is not as important as input current and its voltage drop across the source resistance. Applications cautions are the same for this amplifier as for the inverting amplifier with one exception. The amplifier output will go into saturation if the input is allowed to float. This may be important if the amplifier must be switched from source to source. The compensation trade off discussed for the inverting amplifier is also valid for this connection. 1 09 December 2007 See also: Precision Current Source Precision Current Sink and Precision Current Source. Low Drift Sample and Hold circuit A sample-and-hold circuit which combines the low input current of FETТs with the low offset voltage of monolithic amplifiers. Triangle-Wave Generator This circuit provides a variable frequency triangular wave whose amplitude is independent of frequency. Home Audio Video & TV Power RF Digital Computer Telephone Measurement Security Lights & LED Oscillators Op Amplifiers Other Search Copyright © 2007 freecircuits.net