| --- Thu Aug 7 2014 | 00:00 | |
| osfd | Hi there ! | 11:37 |
|---|---|---|
| osfd | how do I know a process is only 0..3.3V or -3.3..+3.3V ? | 11:38 |
| SpeedEvil | Voltage is always relative | 11:38 |
| osfd | the process I use mention 3.3V supply voltage and a vds_max of 3.6V | 11:38 |
| SpeedEvil | You can call it 0 and 3.3 or 100 and 103.3 | 11:38 |
| SpeedEvil | your process doesn't care about what you call the voltages - just the maximum relative voltages across the chip | 11:39 |
| osfd | SpeedEvil: well, I know that... | 11:39 |
| SpeedEvil | osfd: sorry - I'm not quite understanding the issue | 11:39 |
| osfd | well, I work with AMS0.35u | 11:40 |
| osfd | most of the asic I can see (IEEE mostly) are all working in positive supply voltage 0-3.3V | 11:41 |
| osfd | and I can't remember of a chip working with different supply rails | 11:41 |
| osfd | so of course, I guess I can work with -1.65..+1.65V | 11:42 |
| osfd | but what if I would need to work with -3.3..+3.3 | 11:42 |
| osfd | ? | 11:42 |
| SpeedEvil | you in general need a bigger process - if you don't want to change the design | 11:57 |
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