bicmos technology – Japanese Translation – Keybot Dictionary

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  5 Hits www.st.com  
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Today, ST’s BiCMOS technology can be found in most of the wireless base stations and optical transceivers around the world as well as in wireless terminals, automotive radars and instrumentation solutions.
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また、車載用レーダー（24/77GHz）、衛星通信、LAN RFトランシーバ（60GHz）、Point-to-Point無線（V帯/E帯）、防衛、セキュリティ、計装などの新たなマイクロ波アプリケーションも、RF性能や動作条件に関する要求が極めて厳しくなりつつあります。
  www.maximintegrated.com  
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In most pipelined ADCs designed with CMOS or BiCMOS technology, the S&H, DAC, summation node, and gain amplifier are usually implemented as a single switched-capacitor circuit block called a multiplying DAC (MDAC).
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Calibration starts from the MDAC in the third stage; beyond the third stage the MDAC error terms are small enough that calibration is not needed. The third-stage output is digitized by the remaining pipelined ADC, and the error terms are stored in on-chip RAM. Once the third MDAC is calibrated, it can be used to calibrate the second MDAC in a similar fashion. Likewise, once the second and third MDAC are calibrated, they are used to calibrate the first MDAC. Averaging is used (especially in the first and second MDAC) to ensure that the calibration is noise-free. During normal conversions, those error terms are recalled from the RAM and used to adjust the outputs from the digital-error-correction logic.