Analog video switch and amplifier with direct coupled output


Posted on Feb 5, 2014

This circuit shows a CA3256 switch/amplifier connected for a direct-coupled output. One of four channels can be selected in parallel with channel 5. The analog switches of channels 1 to 4 are digitally controlled by logic (Fig. 3-35B). A VEE of -5 V is required. Vcc can be from +5 to +12 V. Amplifier gain is determined by the external resistor Rf,


Analog video switch and amplifier with direct coupled output
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as shown by the equaeion.




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