Searching for an IC or the Graal ? - Page 1
Forum section: electronics / beginners

author: enitalp
author_rank: Newbie
timestamp: April 29, 2022, 10:56:38 pm
content: Hi all.i'm searching for an IC with let's say randonlyi have 50 Analog 3.3v input, and the IC have 50 Analog 3.3v output,But i can configure it, in i2c, spi, whatever, that, pin 0 is now connected to output 15.Kind of a big matrix , trying to make a hardware an software driver for different input.Tell me something like that exist, don't tell me pal,gal,fpga. just a simple ic, that can handle exactly that ;p

author: pigrew
author_rank: Frequent Contributor
timestamp: April 29, 2022, 11:14:57 pm
content: An FPGA or such won't work because they are digital, and you request analog.It's only 32x32, but something like Analog Devices ADV3201 might work for you.Otherwise, you could layout a large array of analog switches/multiplexers (or even relays). 50x50 is big.

author: inse
author_rank: Super Contributor
timestamp: April 30, 2022, 05:56:20 am
content: ADV3201 $132, Eval board $3294.50 WOW!I wonder what your application is.For one random connection at a time, you would need 100 switches, for any random combination, 2500 switches.This does not sound like a project for the Beginners section, tell us more, please.

author: brucehoult
author_rank: Super Contributor
timestamp: April 30, 2022, 06:37:01 am
content: Quote from: enitalp on April 29, 2022, 10:56:38 pmReally an impossible question to answer without knowing the necessary precision of the analog signals, the frequency response, and the delay between input and output.

author: BrianHG
author_rank: Super Contributor
timestamp: April 30, 2022, 07:39:04 am
content: Quote from: inse on April 30, 2022, 05:56:20 amFor a 32x32 matrix mux with 300MHz bandwidth, this is actually an excellent price.I would not pay less for even 30MHz bandwidth.And I do not expect it to cost less going about it discretely with a mountain of analog CMOS switches with buffer amps to eliminate cross-glitching when switching.

author: enitalp
author_rank: Newbie
timestamp: April 30, 2022, 02:34:35 pm
content: Ok.I want to have an LCD on my project.And it's a magic world full of different "standards".So I'm making for test a board with a 30 pin 40 pin 50 pin and 6 pins for the touch, so I can connect every screen I bought on the Chinese market.All those pins are connected to regular pin 2.54 pitch. so I can piggyback on a breadboard and my microcontroller. that can drive on paper all those screens, for the most part, it the same 20 pins on the micro that are configured differently by soft that compose most of the 30 or 40 or 50 pins, at the different position according to the screen or manufacturer.So I want to be able to support them all, by saying that besides my mode (MIPI, RGB, LVDS ) of my pins I want to connect the pin 38 of my microcontroller sometimes to pin 20 on the 30 pins connector or pin 25.I want to be able to any configuration of connector size and pinout of every LCD I can find, and just make them work with a "software change" and a hardware change in my routing of pins.I hope it's clear ;p

author: inse
author_rank: Super Contributor
timestamp: April 30, 2022, 03:42:17 pm
content: A clear case of insanity - sorry

author: Siwastaja
author_rank: Super Contributor
timestamp: April 30, 2022, 03:54:44 pm
content: What are you actually doing? I.e., what is the project?