講演名 2007/6/18
An In-plane 3-axis Inertial Measurement Unit with 16-bit Over-Sampled Capacitive Readout ASIC
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抄録(和)
抄録(英) A high performance inertial measurement unit (IMU) with fully differential, 16-bit over-sampled capacitive readout circuit is presented. The IMU can measure the x and y axis accelerations and z axis rotation. The MEMS sensing elements are fabricated using the sacrificial bulk micromachining (SBM) process. The sensor interface circuit is fabricated using a standard 0.18-μm CMOS process. The input capacitive amplifier adopts a fully-differential, chopper-stabilized switched capacitor (SC) architecture to obtain low noise characteristics. The output of input amplifier, modulated with the chopping frequency, is converted to a digital signal by 12-bit algorithmic analog-to-digital converter (ADC), to achieve a high resolution while maintaining a low power. The digital signal is demodulated in a digital demodulator, which removes non-ideal behaviors of a multiplier. The white-noise level of the demodulated signal is effectively reduced by a subsequent decimation filter, and then 16-bit acceleration and rotation signals are obtained. The SPI and I2C interface are integrated to enhance the user-connectivity. The fabricated system is applicable for automotive systems, such as electronic stability program (ESP).
キーワード(和)
キーワード(英) MEMS / SBM / IMU / accelerometer / gyroscope
資料番号 ED2007-118,SDM2007-123
発行日

研究会情報
研究会 ED
開催期間 2007/6/18(から1日開催)
開催地(和)
開催地(英)
テーマ(和)
テーマ(英)
委員長氏名(和)
委員長氏名(英)
副委員長氏名(和)
副委員長氏名(英)
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幹事補佐氏名(和)
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講演論文情報詳細
申込み研究会 Electron Devices (ED)
本文の言語 ENG
タイトル(和)
サブタイトル(和)
タイトル(英) An In-plane 3-axis Inertial Measurement Unit with 16-bit Over-Sampled Capacitive Readout ASIC
サブタイトル(和)
キーワード(1)(和/英) / MEMS
第 1 著者 氏名(和/英) / Taedong Ahn
第 1 著者 所属(和/英)
SML Electronics, Inc.
発表年月日 2007/6/18
資料番号 ED2007-118,SDM2007-123
巻番号(vol) vol.107
号番号(no) 110
ページ範囲 pp.-
ページ数 4
発行日