Symmetrically-folded MOS (metal oxide semiconductor) transistor cascade amplifier with broadband and low-power consumption
A MOS transistor and cascode technology, which is applied in the field of broadband low-power symmetrical folded MOS transistor cascode amplifiers, can solve the problems of unused transmission of small signal current, difficulty in achieving high bandwidth performance, and high static power consumption. , to achieve the effect of symmetrical positive and negative conversion rates, increased bandwidth, and high CMRR
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[0020] The present invention provides a broadband low-power symmetrical folded MOS tube cascode amplifier. in figure 2 Wherein, the broadband low power consumption symmetrical folded MOS tube cascode amplifier includes:
[0021] The shunt input stage is composed of PMOS tubes MP1a, MP1b, MP2a, and MP2b. The sizes of MP1a, MP1b, MP2a, and MP2b are the same;
[0022] The intermediate stage for amplifying and recovering current includes a first current mirror composed of NMOS tubes MN6, MN5, and MN3, and is connected to the MP2b tube of the input stage, where MN6 is connected to MN12 and MN9 at the same time, and MN12 and MN9 are connected to MP1a at the same time. And a second current mirror composed of NMOS transistors MN4, MN7, MN8, and connected to the MP1b tube of the input stage, where MN8 is connected to MN10 and MN11 at the same time, and MN11 and MN10 are connected to MP2a at the same time;
[0023] Rail-to-rail output stage, composed of NMOS tubes MN10, MN12 and PMOS tubes M...
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