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TIPD160

Digitally Tunable MDAC Based State Variable Filter Reference Design

Design files

TIPD160

Design files

Overview

This MDAC based state variable filter offers highly accurate digital tuning of gain, center/cut off frequency, and quality factor. This circuit provides three separate filter outputs: low pass, band pass, and high pass that can be accessed simultaneously.  This circuit is suitable for a broad range of applications requiring accurate digital filter tuning from audio to industrial and more!

Features
  • Contains Theory, Component Selection, TINA-TI Simulation, Measured Results, PCB Layout, Modifications
  • Digitally tunable high, band, or low pass filter
    • Gain range -53.13 dB to 6.01 dB
    • Frequency range 1.99 Hz to 28.76 kHz
    • Quality factor range 0.46 to 2.14
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

download Schematic — TIPD160
TIDC710.ZIP (2108 K)

Detailed schematic diagram for design layout and components

download Schematic — TIPD160
TIDRBE7.PDF (193 K)

Detailed schematic diagram for design layout and components

download Bill of materials (BOM) — TIPD160
TIDRBE8.PDF (185 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

download Gerber file — TIPD160
TIDC711.ZIP (1823 K)

Design file that contains information on physical board layer of design PCB

Products

Includes TI products in the design and potential alternatives.

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OPA277 — Dual, 36-V, 10µV offset, 0.1µV/˚C drift, bipolar, operational amplifier

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Technical documentation

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* User guide Digitally Tunable MDAC-Based State Variable Filter Reference Design (TIPD160) Sep. 19, 2014

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