Rail-to-rail differential input circuit
A differential input circuit, differential pair technology, applied in differential amplifiers, improved amplifiers to reduce temperature/power supply voltage changes, DC-coupled DC amplifiers, etc. The effect of small current variation, reducing variation and improving load capacity
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[0042] In order to make the content of the present invention clearer and easier to understand, the content of the present invention will be further described below in conjunction with the accompanying drawings. Of course, the present invention is not limited to this specific embodiment, and general replacements known to those skilled in the art are also covered within the protection scope of the present invention.
[0043] In this specification and in the claims, it will be understood that when an element is referred to as being "connected to" or "connected to" another element, it can be directly connected to the other element or intervening elements may be present. .
[0044] image 3 It is a schematic circuit diagram of a rail-to-rail differential input circuit according to an embodiment of the present invention. The rail-to-rail differential input circuit can be used as an input stage of an operational amplifier, such as a rail-to-rail operational amplifier applied in a 55...
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