Question regarding: HAVDD, HVIN, VONE, VOFFE
Hello people!
My knowledge so far:
AVDD = positive voltage of analog circuit
VIN = input voltage
But what does the "H" prefix mean? I heard two different things:
1. It stands for HIGH, meaning HAVDD is an upscaled version of AVDD.
2. It stands for HALF, meaning HAVDD is AVDD/2.
Both explanations make no sense when I look at my PCB and find the following markings: VIN_12V and HVIN_12V. That obviously tells us explicitly that both points have "12V" and VIN was not just Halfed nor High'ed, so I am confused.
I also have no clue what VONE and VOFFE mean. I also have two theories about them:
1. V=voltage (duh!) and "o" means OUTPUT! So both are voltages created by the circuit, not inputted. But then what do "NE" and "FFE" mean?? I also saw both markings without the trailing "E".
2. Its a voltage that, if present, turns something ON or in case of "VOFFE" it turns something OFF.
Does anyone actually know what these four acronyms stand for? The terminology drives me insane. Please help.
Bye bye!
My knowledge so far:
AVDD = positive voltage of analog circuit
VIN = input voltage
But what does the "H" prefix mean? I heard two different things:
1. It stands for HIGH, meaning HAVDD is an upscaled version of AVDD.
2. It stands for HALF, meaning HAVDD is AVDD/2.
Both explanations make no sense when I look at my PCB and find the following markings: VIN_12V and HVIN_12V. That obviously tells us explicitly that both points have "12V" and VIN was not just Halfed nor High'ed, so I am confused.
I also have no clue what VONE and VOFFE mean. I also have two theories about them:
1. V=voltage (duh!) and "o" means OUTPUT! So both are voltages created by the circuit, not inputted. But then what do "NE" and "FFE" mean?? I also saw both markings without the trailing "E".
2. Its a voltage that, if present, turns something ON or in case of "VOFFE" it turns something OFF.
Does anyone actually know what these four acronyms stand for? The terminology drives me insane. Please help.
Bye bye!
Comment