both are considered to be hi impedance inputs.
If a sensor requires a high impedance in order to maintain accuracy, we usually connect that sensor to the positive (+) input terminal of the op-amp.
Because op amp consist differential amplifier and they posses high input impedance so that op-amp also posses high input impedance.
Output impedance in an op-amp is not high - it is low - input impendance is high, and this is because the input stage transistors have high gain.
no. input impedance is low & output impedance is high
FET s have very high input impedance when compared with Bipolar transistors.
That depends on the output impedance. In electronic we use voltage bridging, that is a relative low output impedance to a higher input impedance. Usualy the input impedance is more than ten times higher then the output impedance. An input impedance is called also a load impedance or an external impedance. An output impedance is called also a source impedance or an internal impedance.
In a Common Base (CB) configuration, the input terminal is the emitter, where the input signal is applied, and the output terminal is the collector, where the output signal is taken. The base terminal is common to both the input and output circuits, hence the name "common base." This configuration is known for providing high-frequency response and low input impedance.
For the successful amplification of the input signal the opamp should have ideally infinite input impedance . It should act like a buffer amplifierBUFFER amplifier--------------------->1.input impedance infinity2.output impedance zerothe reason is thatAny signal source will have source impedancefor the signal not to get lost and dropped across source impedance we ideally insert infinite impedance in series with it which makes the whole drop across the infinite impedance but not across the sourcesimilarly at the output zero impedance is used where in no part of the signal should be left behind in the op amp as a drop
it has high input impedance
because it has high input impedance and low output impedance
A circuit (an amplifier) typically has a high input impedance so that it does not unduly load the input circuit. Any such load could cause distortion, and that is generally not desired.
FET has very high input impedanceBJT has very low input impedance
To get all the voltage from a source to a target without loss you need voltage bridging, that is a relative low output impedance to a higher input impedance. Usualy the input impedance is more than ten times higher then the output impedance.An input impedance is called also a load impedance or an external impedance.An output impedance is called also a source impedance or an internal impedance.