Driving PIN Diodes: The Op-Amp Alternative
PIN diodes, which sandwich a lightly doped intrinsic region between heavily doped P and N regions, are used extensively in RF and microwave applications. PIN diode drivers--which provide a controlled forward bias current and reverse bias voltage--use discrete designs or specialized ICs. As an alternative, widely available op amps can be used. Op amps in this class feature wide bandwidth, high slew rate, and enough steady-state current to drive PIN diodes.
posted by Analog Dialogue @ 2:32 PM
2 comments
2 Comments:
Ad. Fig.6.:
With a Q3 of an NPN type, with its emitter connected to V_ line; much better dynamic properties could be expected.
Yes you are correct, it should have be an NPN, we'll correct that error.
Thanks
John Ardizzoni
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