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Article #427Re: How do I make a zero-crossing detector that works at 13 MHz?
From: Richard Karlquist
Date: Tue, 03 Nov 1992 21:42
Date: Tue, 03 Nov 1992 21:42
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1628 bytes
: bwood@diva.Berkeley.EDU (Blake Philip Wood) writes:
:
: )I need to turn a 13.56 MHz sinusoid with sub-volt magnitude into a
: )a square wave oscillating between 0 and 5 V. A zero-crossing detector
: )seems like the way to do it, but the 74393 is WAY too slow. I'm
: )currently doing it with a 7414 Schmitt trigger, which is fast enough,
: )but it only works with sinusoids of at least 2 V magnitude. I'd like
: )it to switch at no more than 50 mV.
:
: )Any suggestions?
Use a high-speed TTL comparator, such as a Maxim MAX901 or a Linear
Technology LT1016.
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| Rick Karlquist |
| Hewlett-Packard Santa Clara Division |
| Precision Time and Frequency R&D |
| |
| email: rkarlqu@scd.hp.com |
| landline: (408)-553-2194 |
| radio: N6RK |
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Path: arc1-ca.pugleaf.net!sparky!uunet!ogicse!decwrl!sdd.hp.com!scd.hp.com!hpscdm!rkarlqu From: rkarlqu@scd.hp.com (Richard Karlquist) Newsgroups: sci.electronics Subject: Re: How do I make a zero-crossing detector that works at 13 MHz? Message-ID: <1d6rolINN27c@hpscdf.scd.hp.com> Date: 3 Nov 92 21:42:45 GMT Article-I.D.: hpscdf.1d6rolINN27c References: <51764@donald.WichitaKS.NCR.COM> Organization: Hewlett Packard Santa Clara Division Lines: 25 NNTP-Posting-Host: hpscrj.scd.hp.com X-Newsreader: TIN [version 1.1.4 PL6]