| Electronics > Projects, Designs, and Technical Stuff |
| Anyone know what this thing is? |
| (1/2) > >> |
| jeffheath:
Google turned no datasheets. Someone said I could have anything I wanted from their parts bin, so I chose this, because it looked cool. |
| pigrew:
It's a DAC (digital to analog converter) made by the PMI company. The part number is DAC-01. It is a 6-bit design, and uses a R-2R ladder circuit. I found a few books containing datasheets for it: 1986 PMI 1976 PMI The datasheet even has a photo of the top metal layer (attached). |
| jeffheath:
--- Quote from: pigrew on February 17, 2019, 05:12:42 am ---It's a DAC (digital to analog converter) made by the PMI company. The part number is DAC-01. It is a 6-bit design, and uses a R-2R ladder circuit. I found a few books containing datasheets for it: 1986 PMI 1976 PMI The datasheet even has a photo of the top metal layer (attached). --- End quote --- Thanks! I guess I came to the right place :-+ Out of all the uses on the datasheet, "telephone system digitizing" definitely sounds the coolest, I didn't know they were already doing that in 76. |
| KE5FX:
--- Quote from: jeffheath on February 17, 2019, 05:39:13 am ---Thanks! I guess I came to the right place :-+ Out of all the uses on the datasheet, "telephone system digitizing" definitely sounds the coolest, I didn't know they were already doing that in 76. --- End quote --- They were doing that in 46. 8) |
| jeffheath:
--- Quote from: KE5FX on February 17, 2019, 05:41:35 am --- --- Quote from: jeffheath on February 17, 2019, 05:39:13 am ---Thanks! I guess I came to the right place :-+ Out of all the uses on the datasheet, "telephone system digitizing" definitely sounds the coolest, I didn't know they were already doing that in 76. --- End quote --- They were doing that in 46. 8) --- End quote --- So basically it was a 6 bit dac with a sampling rate of 50hz? I wonder what it sounded like... [edit] could something like sigsaly even have bit depth? |
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