User Module Datasheet: Two-Pole Low-Pass Filter Datasheet LPF2 V 4.10 (CY8C29/27/24xxx, CY8C23x33, CY8CLED04/08/16, CY8CLED0xD, CY8CLED0xG, CY8CTMG120, CY8CTMA120, CY8C28x45, CY8CPLC20, CY8CLED16P01, CY8C28x43, CY8C28x52) | Cypress Semiconductor
User Module Datasheet: Two-Pole Low-Pass Filter Datasheet LPF2 V 4.10 (CY8C29/27/24xxx, CY8C23x33, CY8CLED04/08/16, CY8CLED0xD, CY8CLED0xG, CY8CTMG120, CY8CTMA120, CY8C28x45, CY8CPLC20, CY8CLED16P01, CY8C28x43, CY8C28x52)
Last Updated:
May 31, 2013
Version:
4.10
Features and Overview
- User-programmable corner frequency and damping ratio
- Corner frequency ranging from 20 Hz to 180 kHz
- Automated design for Bessel, Butterworth, and Chebychev filters
- User-selected oversample ratio (OSR), ratio of sample frequency to corner frequency
- Built-in polarity control
- 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.
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.
Related Files
| File Title | Language | Size | Last Updated |
|---|---|---|---|
 LPF2_V4.10_001-13572.pdf |
English | 1.14 MB | 05/31/2013 |
|
001-13572_LPF2.pdf |
Chinese | 638.92 KB | 02/09/2011 |
|
001-13572_LPF2.pdf |
Japanese | 755.85 KB | 02/09/2011 |