User Module Datasheet: Two-Pole Low-Pass Filter Datasheet LPF2 V 4.00 (CY8C29/27/24xxx, CY8C23x33, CY8CLED04/08/16, CY8CLED0xD, CY8CLED0xG, CY8CTST120, CY8CTMG120, CY8CTMA120, CY8C28x45, CY8CPLC20, CY8CLED16P01, CY8C28x43, CY8C28x52)
Last Updated: 10/23/2012
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Version: 4.00
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Features and Overview
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User-programmable corner frequency and damping ratio
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Corner frequency ranging from 20 Hz to 180 kHz
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Automated design for Bessel, Butterworth, and Chebychev filters
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User-selected oversample ratio (OSR), ratio of sample frequency to corner frequency
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Built-in polarity control
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Built-in modulator for use in full-wave detection and frequency translation
The LPF2 User Module uses two switched-capacitor blocks to implement a general-purpose second order low-pass filter. Corner frequency and damping ratio are functions of the ratios of programmable on-chip capacitors and clock frequency; no external components are required. Selects your filter characteristics and clock frequency; capacitor and clock divider values are automatically calculated in the design tool (wizard). Multiple low-pass filters can be cascaded or combined with band-pass filters to achieve more complex transfer functions.
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これらの文献はあくまでもご参考のためのみに日本語翻訳されています。誤訳によるトラブルが発生した場合、Cypress Semiconductor Corp. 全ての子会社、関連会社、役員、従業員、販売代理店は一切の責任を負いかねます。
最新の英語版オリジナル文献を必ずご参照いただくことをお勧め致します。
Translated documents are for reference only. We recommend that you refer to the English-language version of a document if you are engaged in development of a design.
Spec No: 001-13572;
Sunset Owner: DHA;
Secondary Owner: LHO;
Sunset Date: 06/06/11
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