I have some questions about AD8015. The figure and the question were written to attached PPT.
Please see attached PPT and please give me a reply.
Below are the answers to your questions.
1. The typical output current of AD8015 with a single-ended output is 6mA (600mV/50Ohm/2).
2. Unused output pin should not be left floating. It should be terminated with a DC block capacitor (0.1uF) and a 50Ohm resistor to signal ground.
3. The output pin that you will use depends on your expected output for a certain input current. For example, you injected an input current of 60uA and you're expecting to have an output voltage of +3.2V for a supply voltage of +5V so, the output pin that you should use is pin7. If you want an output voltage of +4.2V for the same supply, then use pin6. The +3.2V and +4.2V are derived from +Vs minus output voltage from Figure 7 of the AD8015 datasheet. Please refer to that figure for further details on choosing the right output pin.
4. One application for blocking capacitors is coupling the output of one amplifier stage to the next. If you don't use a blocking capacitor, the DC offset in the output of the first stage will affect the biasing of the following stage.
Hope this helps!
Could you provide the questions in text form? Not all of us have powerpoint (or particularly want to open powerpoint files from people we don't know)
I'm looking at your question now. I'll get back to you on this.
Thank you for the detailed reply. I have understood AD8015 well.
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