Video DC level restoration

[eTechs]

Hi,
I want to digitize an analog video signal that has 1.6V video signal amplitude and 2V DC offset (2+1.6 = 3.6V Peak). The ADC has 2.5V Peak range. I need only 2~3.6V signal with DC level restored so that t it has 0~1.6V (3.6V-2V) video signal amplitude, i.e. the DC offset subtracted from this signal. Kindly suggest video level restorer IC or discrete components solution for this application.
Thanks.

 

[betwixt]

This is normally done with a simple diode and capacitor arrangement. The capacitor charges to peak video level and that voltage is then referenced to a fixed voltage.

A good source of information is the CQ-TV archive at www.batc.org.uk but it seems to be linking to the article software rather than the magazine PDFs at the moment, I'll report it to their webmaster.

Brian.