Skip to main content
. Author manuscript; available in PMC: 2016 Jan 1.
Published in final edited form as: Methods Mol Biol. 2015;1256:123–137. doi: 10.1007/978-1-4939-2172-0_9

Fig. 3.

Fig. 3

Electronics to process the micro-Hall signal. (a) The hall resistance R was measured versus the applied magnetic field B, and a sensitivity of 78 Ω/T was calculated. (b) The input-referred noise of the μHall sensors as measured with a spectrum analyzer. (c) A schematic of the electronics to condition the μHall signal prior to software analysis. Each pair of μHall sensors are driven with a current source. The differential output of each μHall sensor is AC coupled to a two-stage amplifier (gain = 30 × 30) before analog-to-digital conversion ADC. Once digitized the signal is sent to either a computer or mobile device for software analysis