• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer

Electrical Engineering News and Products

Electronics Engineering Resources, Articles, Forums, Tear Down Videos and Technical Electronics How-To's

  • Products / Components
    • Analog ICs
    • Connectors
    • Microcontrollers
    • Power Electronics
    • Sensors
    • Test and Measurement
    • Wire / Cable
  • Applications
    • Automotive
    • Industrial
    • IoT
    • Medical
    • Telecommunications
    • Wearables
    • Wireless
  • Resources
    • Covid-19
    • DesignFast
    • Ebooks / Tech Tips
    • EE Forums
      • EDABoard.com
      • Electro-Tech-Online.com
    • FAQs
    • 2020 LEAP Awards
    • Oscilloscope Product Finder
    • Podcasts
    • Webinars / Digital Events
    • White Papers
  • Videos
    • Teardown Videos
  • Lee’s Teardowns
    • Teardown Videos
  • Learning Center
  • 5G
  • Women in Engineering

Filters offer ‘brick-wall’ performance to 7 GHz for semiconductor and IC testing

March 10, 2021 By Lee Teschler

Two new filter series for high frequency testing applications–-LC17 and HC17-–provide brick wall characteristics and performance to 7 GHz making them candidates for audio-digital-conversion and digital-audio-conversion (ADC/DAC) test set ups. Such signal conditioning testing is especially important for semiconductor chips and integrated circuits where testing frequencies continue to trend higher and higher. Relevant markets include commercial, industrial, medical, military/defense and test & measurement.

TTE’s new filters leverage the steep roll-off response of Chebyshev topology in 17th-order low-pass tte(LC) and high-pass (HC) designs to address gigahertz frequencies–-much higher than traditional brick wall anti-aliasing elliptical function filters which are typically limited to less than 500 MHz.

These new LC17 and HC17 filters, while not true brick-wall filters, are designed in a way that their steep roll-offs closely resemble brick-wall filters. Moreover, because TTE’s new filters are based on Chebyshev topology, they have a slight ripple in the passband and no ripple in the stopband, unlike elliptical designs which have ripple in both the passband and stopband. Thus TTE’s filters provide desirable stopband performance at high frequency with limited passband ripple.

The passband-to-stopband ratio for the LC17 filter is -50 dBc at 1.19 fo and -60 dBc at 1.27 fo . That ratio for the HC17 filter is -50 dBc at 0.84 fo and -60 dBc at 0.78 fo. The frequency range for both filters is 1 MHz to 7 GHz. Standard or custom cases are available.

A Summary Datasheet for TTE’s LC and HC series (both combined into one PDF) provides additional information about the new LC17 and HC17 filters. Complete technical information is available at the company’s website at, respectively, the Lowpass Chebyshev (LC) page and the Highpass Chebyshev (HC) page. TTE offers low Total Harmonic Distortion (THD) versions of its filters – including the LC17T and HC17T – to improve ADC/DAC testing by reducing the harmonics inherently present in signal generators.

A technical discussion about brick wall filters – and the LC17 and HC17 series – was recently issued by TTE (an affiliate of GCG) entitled “The Need for High Frequency Brick Wall Filters“.

 

Filed Under: Aerospace & Defense, Applications, Industrial, Medical, Test and Measurement Tips Tagged With: ttefilters

Primary Sidebar

EE Training Center Classrooms

“ee

“ee

“ee

“ee

“ee

Featured Resources

  • NEW! EE World Online Learning Center
  • CUI Devices – CUI Insights Blog
  • EE Classroom: Power Delivery
  • EE Classroom: Building Automation
  • EE Classroom: Aerospace & Defense
  • EE Classroom: Grid Infrastructure

February 2021 Special Edition: Power Electronics Handbook

RSS Current EDABoard.com discussions

  • CMOS inverter basic questions
  • usb info
  • LR8 linear regulator running off 510V when 480V is abs max?
  • Whirlpool washing machine l1961
  • ESL of ceramic capacitor seems too high, at 8.8uH

RSS Current Electro-Tech-Online.com Discussions

  • Question PS2 slim 90000 components
  • Keep battery hot
  • laptop car charger
  • Sampling an AC signal
  • Tesla coil progress

Oscilloscopes Product Finder

Follow EE World on Twitter

Tweets by @EEWorldOnline

Footer

EE World Online

EE WORLD ONLINE NETWORK

  • DesignFast
  • EDABoard Forums
  • Electro-Tech-Online Forums
  • Microcontroller Tips
  • Analog IC Tips
  • Connector Tips
  • Engineer's Garage
  • Power Electronic Tips
  • Sensor Tips
  • Test and Measurement Tips
  • Wire & Cable Tips
  • 5G Technology World

EE WORLD ONLINE

  • Subscribe to our newsletter
  • Lee's teardown videos
  • Advertise with us
  • Contact us
  • About Us
Follow us on TwitterAdd us on FacebookFollow us on YouTube Add us on Instagram

Copyright © 2021 · WTWH Media LLC and its licensors. All rights reserved.
The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media.

Privacy Policy