Timeline for Making a pure R-2R resistor ladder DAC with adjustable offset
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 13, 2015 at 22:14 | comment | added | pipe | @user36129 A fraction of a bit can be useful if you only have three bits, and you won't get much more than that when doing a ladder like this. | |
| Dec 13, 2015 at 20:32 | answer | added | Bob Larson | timeline score: 0 | |
| Nov 6, 2015 at 9:41 | answer | added | aiveng0 | timeline score: 0 | |
| May 12, 2014 at 7:59 | comment | added | user36129 | You do only lose a fraction of a bit if you go from 0-5 to 1-5V or such range differences. I highly doubt it's worth the hassle and nonlinearity to try this. | |
| Dec 12, 2013 at 18:15 | answer | added | Andy aka | timeline score: 1 | |
| Dec 12, 2013 at 16:54 | comment | added | Jemenake | I think PWM was the first way I was going to do it but I couldn't get the output to be smooth enough. This is all part of a circuit to measure AC ripple in DC power supplies under varying current loads. This DAC is driving the transistor which is putting the load on the power supply. If there were any ripple in this voltage, it would ripple the load current and affect my readings. | |
| Dec 12, 2013 at 16:12 | comment | added | Joe Hass | Is there some reason you don't want to use a PWM signal and a low-pass filter to generate the analog voltages? | |
| Dec 12, 2013 at 16:07 | history | asked | Jemenake | CC BY-SA 3.0 |