Gm-C Chopper Amplifiers for Implantable Medical Devices
نویسندگان
چکیده
In this paper two different Gm-C chopper amplifiers, aimed for signal amplification in implantable devices are presented. The first one is a pre-amplifier for ENG signals that was fabricated in a 1.5 μm technology. Measurements of this amplifier showed input noise of 1.2 nVHz and 2.5 μV offset with a power consumption of 28 mW. The second is a complete amplifier for EEG signals designed in a 0.35 μm technology. This amplifier, currently being fabricated, has 1 μVrms input noise in the 0.5 to 100 Hz band, at only 1.2 μW of power consumption.
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