M
Mook Johnson
- Jan 1, 1970
- 0
I need to make a high curent driver (say 500mA peak) that I can adjust the
slew from say 50nS to 500nS in both directings. The input is 3.3V digital
and the ouput is a 0- 10V square wave driving about 200ft of wire. I figure
the lump capacitance is about 1000pF. I need to adjust he slew rate to
reduce the amount of cross coupling from this wire to its parellel neighbor
but I need the edges as sharp as I an get them.
I'm looking at lower end FET drivers with resistors between the output and
the line. Is there a way to make these have a linear slew from 0 - 10Vover
the 25 - 250nS range mentioned?
Any other circuit ideas for intentionally limiting the slew?
slew from say 50nS to 500nS in both directings. The input is 3.3V digital
and the ouput is a 0- 10V square wave driving about 200ft of wire. I figure
the lump capacitance is about 1000pF. I need to adjust he slew rate to
reduce the amount of cross coupling from this wire to its parellel neighbor
but I need the edges as sharp as I an get them.
I'm looking at lower end FET drivers with resistors between the output and
the line. Is there a way to make these have a linear slew from 0 - 10Vover
the 25 - 250nS range mentioned?
Any other circuit ideas for intentionally limiting the slew?