Closed-loop Bio-signal Amplifiers: Experimental Results
In this chapter, we will present the measurement results of the telescopic-cascode and complementary low-noise amplifiers discussed in the previous chapter. In order to compare and contrast the performance of these two LNA designs, we fabricated both LNAs in a 0.13 μm CMOS process. As the analog front-end of a neuralrecording channel, each LNA is followed with a variable-gain amplifier (VGA) to accommodate signals of various amplitudes. Fig. 5.1 illustrates one recording channel with the complementary LNA followed by a VGA.
KeywordsDition Kelly Bide
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