A Signal and Offset T&H Frontend for Spinning Hall Sensors with Ping-Pong and Chopping Techniques
| Autor: | Yongjia Li, Leneesh Raghavan, Mario Motz |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Physics Offset (computer science) Comparator business.industry Amplifier 020208 electrical & electronic engineering Electrical engineering 02 engineering and technology 01 natural sciences Overcurrent law.invention law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Hall effect sensor Resistor business Spinning Temperature coefficient |
| Zdroj: | ESSCIRC |
| Popis: | A spun Hall sensor with continuous-time chopping and ping-pong sampling techniques for fast overcurrent detection application is presented in this paper. The proposed background track-and-hold ping-pong comparator continuously tracks the input Hall signal while cancels the Hall offset and the amplifier offset without shorting the input amplifier. In addition to the spinning-current technique, a system chopping and a chopped 6-bit DAC with temperature coefficient (TC) correction guarantee an overcurrent threshold drift of 1.06A (0.7% of the typical full-scale range 150A) from −50°C to 125°C. |
| Databáze: | OpenAIRE |
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