Hi all,
I'm trying to use an EL5166 as a CCD clock driver running at 28MHz which needs a voltage swing from -4.5 to 1.5V and a rise time of 3ns or less. I selected this op amp for it's 6000V/us slew rate and high output current which are the limits I've hit before. However I get a small 200mVpp highly distorted output waveform at any frequency by holding the inverting input at 1.5V and applying a 3.3V square wave signal from the FPGA into the non inverting input. I'm using a +/-4V supply for this test.
I'd appreciate some advice for driving CCD clocks. Here are the requirements:
- High slew rate needs 8V in 4ns rise and fall.
- Maximum 10V working voltage.
- Current output of at least 100mA peak.
This means a lot of high speed voltage comparators are out due to working at a maximum of 5.5V, and MOSFET gate drivers are too slow. Buffered op amps are difficult to get the speed and limit cross conduction.
Thanks!