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.
KeywordsNeural Recording 29th Annual International Conference Thermal Noise Voltage Refer Voltage Noise Voltage Noise Spectrum
Unable to display preview. Download preview PDF.
- Holleman J, Otis B (2007) A sub-microwatt low-noise amplifier for neural recording. In: 29th annual international conference of the IEEE Engineering in Medicine and Biology Society (EMBS 2007), Lyon, pp 3930–3933Google Scholar
- Wu H, Xu Y (2006) A 1V 2.3mW biomedical signal acquisition IC. In: Proceedings of the 2006 IEEE international conference on solid-state circuits, Digest of Technical Papers, San Francisco, CA, pp 119–128Google Scholar