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- Path: sparky!uunet!elroy.jpl.nasa.gov!ucla-cs!ucla-se!python.icsl.ucla.edu
- From: inyup@python.icsl.ucla.edu (Ian Knight)
- Newsgroups: comp.lsi
- Subject: DELAY LINE?
- Message-ID: <7858@lee.SEAS.UCLA.EDU>
- Date: 18 Aug 92 22:34:40 GMT
- Sender: news@SEAS.UCLA.EDU
- Organization: UCLA Integrated Circuits & Systems Laboratory
- Lines: 26
-
-
- Hi, folks.
-
- Is there anybody who designed a delay line(DL, continuous time, digital)
- using CMOS ?
-
- Its specifications are as follows:
-
- 1. the output is delayed version of input.
- 2. it's desirable to have the symmetric delay
- (that is, rising propagation delay == falling propagation delay)
- 3. the delay must be controllable from "0.5ns" to "10ns"
- using only circuit parameter(let's say, using gate cap. or ratio...)
- 4. the total area of the DL must be minimal.
- (it can be included inside the usual Digital VLSI,
- in quantity of 10 or more)
- ....
-
- I think somebody in the DRAM business might be using DL
- as a control signal for the RAS/CAS,
- my application is totally different, though.
-
- Any hints really will be appreciated.
-
-
- - Ian Knight
-