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User Module Datasheet: Two-Pole Band-Pass Filter Datasheet BPF2V 6.00 (CY8C29/27/24xxx, CY8C23x33, CY8CLED04/08/16, CY8CLED0xD, CY8CLED0xG, CY8CTST120, CY8CTMG120, CY8CTMA120, CY8C28x45, CY8CPLC20, CY8CLED16P01, CY8C28x43, CY8C28x52) | Cypress Semiconductor

User Module Datasheet: Two-Pole Band-Pass Filter Datasheet BPF2V 6.00 (CY8C29/27/24xxx, CY8C23x33, CY8CLED04/08/16, CY8CLED0xD, CY8CLED0xG, CY8CTST120, CY8CTMG120, CY8CTMA120, CY8C28x45, CY8CPLC20, CY8CLED16P01, CY8C28x43, CY8C28x52)

Last Updated: 
Jun 10, 2013
Version: 
6.00

Features and Overview

  • User programmable center frequency, Q, and Gain
  • No external components required
  • Center frequency 20 Hz to 200 kHz
  • Automated design using wizard
  • User-selected over-sample ratio (OSR), a ratio of sample frequency to corner frequency
  • Built-in polarity control
  • Built-in comparator output for use in full-wave detection and communication applications
  • Built-in modulator for use in frequency translation and signal generation

The BPF2 User Module uses two switched-capacitor blocks to implement a general-purpose second order band-pass filter. Center frequency and Q are functions of the ratios of programmable on-chip capacitors and clock frequency; no external components are required. The user selects filter characteristics and clock frequency. Capacitor and clock divider values are automatically calculated in the design tool (wizard). BPF2 can be cascaded or combined with other filter types to make more complex filter structures.

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