Title:
HIGH BANDWIDTH HALL SENSOR
Document Type and Number:
WIPO Patent Application WO/2017/219037
Kind Code:
A3
Abstract:
In described examples, a high bandwidth Hall sensor (500) includes a high bandwidth path (510, 530, 550, 560) and a low bandwidth path (520, 540). The relatively high offset (from sensor offset) of the high bandwidth path (510, 530, 550, 560) is estimated using a relatively low offset generated by the low bandwidth path (520, 540). The relatively high offset of the high bandwidth path (510, 530, 550, 560) is substantially reduced by combining (570) the output of the high bandwidth path (510, 530, 550, 560) with the output of the low bandwidth path (520, 540) to generate a high bandwidth, low offset output. The offset can be further reduced by including transimpedance amplifiers (540) in the high bandwidth sensors to optimize the frequency response of high bandwidth Hall sensor (500).
Inventors:
POLLEY ARUP (US)
RAMASWAMY SRINATH (US)
HAROUN BAHER (US)
MUKHOPADHYAY RAJARSHI (US)
RAMASWAMY SRINATH (US)
HAROUN BAHER (US)
MUKHOPADHYAY RAJARSHI (US)
Application Number:
PCT/US2017/038180
Publication Date:
August 15, 2019
Filing Date:
June 19, 2017
Export Citation:
Assignee:
TEXAS INSTRUMENTS INC (US)
TEXAS INSTRUMENTS JAPAN LTD (JP)
TEXAS INSTRUMENTS JAPAN LTD (JP)
International Classes:
G01R33/07; H03F3/45
Foreign References:
| US8542010B2 | 2013-09-24 | |||
| DE10062292A1 | 2002-03-07 | |||
| US4037150A | 1977-07-19 | |||
| US7425821B2 | 2008-09-16 |
Attorney, Agent or Firm:
DAVIS, Michael, A. et al. (US)
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