A BETTER FLANGER - Electronics Today January 1987 [documentation]
Well, I am being retrenched from my job after over twenty years.
So while packing up my considerable belongings (like moving house, really), I happened to find this 30-year old Electronics Today International magazine still at the bottom of my side chair.
Looks like a pretty good design. Based on the TDA1022.
It seems the TDA1022 has quite high distortion and a low noise replacement is the MN3004 or SAD512.
So while packing up my considerable belongings (like moving house, really), I happened to find this 30-year old Electronics Today International magazine still at the bottom of my side chair.
Looks like a pretty good design. Based on the TDA1022.
It seems the TDA1022 has quite high distortion and a low noise replacement is the MN3004 or SAD512.
- uncleboko
- Cap Cooler
No there are not, only TDA 1022 will do unless you have a............. (temp memory loss!) - you know what it's called - an adapter board I think!Tham wrote:Does anyone know if there are direct pin-for-pin substitutes
for the TDA 1022 ?
TDA 1022 is a 16-pin IC while MN 3004 is 14-pin, and
SAD 512 is an 8-pin chip, and their pin layouts are different.
I adapted this for SAD 1024 but never kept the details.
- Dirk_Hendrik
- Old Solderhand
Information
Why "adapt"? The TDA1022 is one of the few BBD's that is rather easy to source.
- uncleboko
- Cap Cooler
And it's good for the brain to adapt. I much prefer shorter delay of SAD 1024. A Hoax Flanger would be interesting with SAD 1024s.Dirk_Hendrik wrote:Why "adapt"? The TDA1022 is one of the few BBD's that is rather easy to source.
- Fender3D
- Cap Cooler
SAD1024 has not a shorter delay.
you may set it up to half chip or parallel-mux to have the same "buckets" as TDA1022. Otherwise it is a ...1024 stages BBD.
Parallel-mux will have a better resolution though....
you may set it up to half chip or parallel-mux to have the same "buckets" as TDA1022. Otherwise it is a ...1024 stages BBD.
Parallel-mux will have a better resolution though....
- Fender3D
- Cap Cooler
SAD1024 has not a shorter delay.
you may set it up to half chip or parallel-mux to have the same "buckets" as TDA1022. Otherwise it is a ...1024 stages BBD.
Parallel-mux will have a better resolution though....
BTW
unless you have a reasonable cache of SAD chips (and you'd better keep very secret your address, in this case...)
I wouldn't waste a SAD1024 for a magazine project, I'd keep it for "vintage" repair or EBay
you may set it up to half chip or parallel-mux to have the same "buckets" as TDA1022. Otherwise it is a ...1024 stages BBD.
Parallel-mux will have a better resolution though....
BTW
unless you have a reasonable cache of SAD chips (and you'd better keep very secret your address, in this case...)
I wouldn't waste a SAD1024 for a magazine project, I'd keep it for "vintage" repair or EBay
- uncleboko
- Cap Cooler
I thank innit!!!Fender3D wrote:SAD1024 has not a shorter delay.
you may set it up to half chip or parallel-mux to have the same "buckets" as TDA1022. Otherwise it is a ...1024 stages BBD.
Parallel-mux will have a better resolution though....
- uncleboko
- Cap Cooler
Ah but you can clock SAD 1024 considerably higher than TDA 1022, especially if double buffered by a couple of 4049 inverter arrays. So minimum delay is in the microseconds range, so a converted Flanger Hoax may benefit!!