I am using a high-speed op-amp (700 MHz unity gain bandwidth). I have got two questions.
1) It has voltage supply marked Vs+, and Vs- but no ground. So say I supply with say +5, and -5V. But there is no ground connection. The circuit which will feed this circuit, has a ground reference. But the op-amp does not have one. So how it can judge when the input voltage is negative.
2) To test, I have set the negative voltage supply to GND. and set it up as voltage follower. The diagram is the output. Yellow is the input, and green is the output. You can see lot of jitter in input and output, the moment I connect the sine wave input to op-amp. But before connecting input was smooth. Input frequency is 4KHz.
Can someone please tell me why?
OP-AMP Part # OPA2652U (Texas Instruments)