| ??? 11/17/11 18:27 Read: times |
#184785 - Same-same Responding to: ???'s previous message |
Zeeshan said:
This might sound stupid, but i was wondering what if multiple Sample-and-hold amplifiers are used in front of a DAC and the DAC is run at a high speed to output a voltage that is "latched" in a Sample and Hold amp ? Lets say we talk about 8x SnH amps at front of a DA ? Erik said:
however clumsy and imprecise id possible if your device receiveing the analogs has a reasonably high input impedance use analog switches to switch between caps connected to the high impedance analog inputs. Zeeshan said:
However, i just dont get how u justify the CAP approach ! It sounds more dumbfounded than the S&H theory. But capacitors + analog switches are just a specific implementation of a S/H solution. It's just that you can have it all integrated in a chip, or build it with discrete components. http://en.wikipedia.org/wiki/Sample_and_hold |
| Topic | Author | Date |
| Multiple Analog Outputs. | 01/01/70 00:00 | |
| Don't dismiss single DACs | 01/01/70 00:00 | |
| Resolution/precision | 01/01/70 00:00 | |
| RE: #184777 - Resolution/precision | 01/01/70 00:00 | |
| But is 4k steps needed when you have play? | 01/01/70 00:00 | |
| not for commercial use | 01/01/70 00:00 | |
| RE: #184778 - not for commercial u | 01/01/70 00:00 | |
| how else would you ... | 01/01/70 00:00 | |
| RE: #184782 - how else would you ... | 01/01/70 00:00 | |
| Same-same | 01/01/70 00:00 | |
| RE: #184785 - Same-same | 01/01/70 00:00 | |
| why do you think I said "high input impedance"? | 01/01/70 00:00 | |
| Similar stuff ! | 01/01/70 00:00 | |
| State the actual requirement! | 01/01/70 00:00 | |
| RE:#184789 - State the actual requirement! | 01/01/70 00:00 | |
| Still no answer to "need" | 01/01/70 00:00 | |
| No, that is not a requirement! | 01/01/70 00:00 | |
| Very interesting how this always comes up | 01/01/70 00:00 | |
| RE: #184792 - No, that is not a requirement! | 01/01/70 00:00 | |
Yes, bits matter | 01/01/70 00:00 |