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(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 |
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開催期間 | 2007/6/18(から1日開催) |
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講演論文情報詳細 | |
申込み研究会 | Electron Devices (ED) |
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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 |