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105 Threads found on Output Swing Amplifier
How to select voltage supply value for LM324 op-amp? what is the relation between output voltage of op-amp and the supply voltage? I am doing a schematic that has supplied 12V to the op-amp, but i want to use 5V, what will be the difference? Also can i connect the ground of the 5V chip IC and ground of 12V supply to the same ground? making sure
Are there any more specifications? What is the minimum load value allowed on the output? Are you limited to one active device per stage? What is the maximum output swing expected? Maximum output distortion allowed? Frequency bandwidth of operation? - - - Updated - - - It would be much easier if
You discussing output stage saturation voltage which can be found with any amplifier, it has nothing to do with reference or differential input voltage level.
A bipolar transistor is in the linear mode when it is biased so that its output can swing equally up and down like an amplifier. It is in the saturated mode when it ios turned on hard like a switch. A Mosfet is the opposite. It is in the linear mode when it is turned on hard like a switch with a low value resistance. It is saturated when it (...)
I presume there are other criteria than gain that have to be considered too when choosing a suitable bias point, e.g. output swing.
Hi, I need to built a circuit to subtract a reference voltage of 4V from a variable signal from 4 to 4,25V This interval 250mV must be amplified 4 times. I need output variable from 0 to 1V Can someone help me designing this circuit and resistor values Any one knows a low power ampop single supply operating from 2,8V to 5V? 1289
The key is to find a proper operating point for the transistor. You need to adjust things so the output voltage swings inside a middle range between the supply rails. Attach a potentiometer (say, 50k) to the bias terminal. Dial bias current up or down, to shift the output voltage up or down, until your audio signal comes through clearly. Of (...)
An OP amp set up as an comparator ought to work - provided the OP amp output can swing to the rails. You might be able to get away with using a bjt configured as a common emitter amplifier.
Hi, I have a question about the voltage amplification stage of an (audio) amplifier. I just took this attached schematic as an example. The VAS transistor Q4 is driven by the output current from the input pair. It is said the VAS (Voltage Amplification Stage) is a transimpedance stage, converting a current input into a voltage output. But (...)
An amplifier transistor is biased so that with no signal, its output voltage is about half of the supply voltage so it can swing symmetrically up and down for the maximum amount of output swing when it has a strong input signal. An audio signal feeding the input (capacitor-coupled to the base of the (...)
Hi all, this is the basic concept..i have designed the circuit to amplify the 0.002v to 5 v.. according to the formula for non inverting amplifier the Rf and Rin values are 1.5M ohms and produce 5v as output.. i have simulated this circuit in Ltspice. but i get the waveforms like this.what is the reason for this? can u suggest me whe
Hi! I'm building the microphone amplifier found at this page: a bit of a newb to waveform amplifiers, I was just wondering what polarity is the output? If I wanted it to drive a pair of headphones by connectin
Hey guys, just as the title says, is there a way to increase the output voltage range of a mosfet 2 stage op-amp without changing any of the components but rather add components? Assuming the op-amp can handle max input of 1.8v and has a supply of single rail 1.8v and needs to increase to 8v output swing? any input is appreciated. Thanks!
what could be most efficient way of amplifying a 100mV sinusoidal signal...?? i am using class D amplifier but stuck in designing output filter. coz i have to choose between Phase Delay and Ripples.
I am trying to drive 50 Ohm load from output of a accelerometer. The output of accelerometer is a differential signal max 3V across common mode 2.5V. I used a differential to single ended unity gain amplifier as shown in fig, reference set to 2.5 V. but with this circuit I am getting output swing of +-1 V (...)
I guessed at your schematic and simulated your circuit. I increased the input level until the output clipped. I changed your 40.8k resistor to 51k for a symmetrical output swing. There is no voltage gain, it is less than a piece of wire.
Hi BartiebyScrivener I think: Vb2 = Vtn + Vdsat7 + Vdsat9 Vb1 = VDD - (Vdsat4 + Vdsat5 + Vtp) Choose Vdsat 7 + vdsat9 and (vdsat5 + vdsat9) small if want high output swing
Here is a very old graph showing the typical gain and frequency response of an ordinary Cmos inverter used as an amplifier. The gain and frequency response are affected a lot by changes in the supply voltage. The distortion is very high if the output swing gets anywhere near VCC or VSS.
Q4 is not biased properly for a high output swing. It is almost saturated. The 600 ohm load is overloading Q4 that has a 2000 ohm collector resistor. Use a load of 3.9k ohms. Bias Q4 so that its collector voltage is about +3V then it can swing up to +10.5V and swing down to -5V without a load. Use a load (3.9k ohms) (...)
I agree that it doesn't make much sense to use an OP amplifier as digital level converter. In case you want though, the OP must provide rail-to-rail output swing, LM358 doesn't.