GT4124

A B The GT4124 multiplier is a monolithic dual-channel video multiplier for use in the professional broadcast field. It incorporates a very fast and accurate strobed clamp to insure black level accuracy. Featuring two wideband video inputs and a single control input, the GT4124 achieves high quality video mixing of the two synchronized video input signals to a single output by implementing the transfer function:

V_OUT = V_IN • V_C + V_IN (1 - V_C)

where VC is the control input voltage, which may be varied over the control range, and VINA and VINB are the video input signals. The GT4124 operates with power supply voltages of ± 9 to ±12 volts. At a nominal supply of ± 10 volts, it draws an average of 20 mA of current.

The GT4124 is available in 20 pin PDIP and 20 pin SOIC packages. An application note entitled "Using the GT4122 and GT4124 Video Mixer ICs" (Document 520-44) is available from Gennum Corporation.