M65830P reverb chip

[sean k]

I just found an ol' magazine from 2000 that has a schematic in it for a digital reverb which uses two M65380P chips. On the datasheet is says these chips can be setup for delay times, in .5ms increments, up to 64ms, which may be quite useful for us here. The schematic I have uses two with one at 20ms and the other set at 32ms using a bunch of logic chips. Have we been interested in these kinda chips for TV's and surround systems for Reverb duties or is it just easier to use PT2399's.

[mth5044]

I think they are discontinued chips, so if you haven't started to look for one yet, you might be out of luck.

[scratch]

Sean,

Which magazine and what month? I'm curious around the rest of the circuit as to what might be going on with the logic components.

[sean k]

It's Silicon chip, which is an Australian magazine, and the issue was December 2000. I can copy it out if you like, at least the logic stuff and which pins it goes to on the second delay chip.
A 4060, a 4093, a 4022 and a 74HC165.

[scratch]

Sean, sure I'd appreciate that!

[sean k]

E-mail me to remind me if you would please. I'm an awfully forgetful fellow. artiwon@gmail.com

[Thomeeque]

I just found an ol' magazine from 2000 that has a schematic in it for a digital reverb which uses two M65380P (M65830P) chips. On the datasheet is says these chips can be setup for delay times, in .5ms increments, up to 64ms, which may be quite useful for us here. The schematic I have uses two with one at 20ms and the other set at 32ms using a bunch of logic chips. Have we been interested in these kinda chips for TV's and surround systems for Reverb duties or is it just easier to use PT2399's.

Hi!

For these delay times (if not reachable by PT2399) you can try to get Princeton's PT2398 or ERSO/ ITRI equivalent ES56028 (some of my experiences /and datasheets/ here and here). It would be even easier than with M65830P, because it does not need any other logic around (same concept as PT2399).

M65830P would be sweet for flanger projects, shortest delay time I've got from PT2398 was 2.4ms and that's too much.

Good luck, T.

[sean k]

[scratch]

Sean,thanks for posting that.