NTE715

NTE715 Integrated Circuit TV Chroma IF Amp Description: The NTE715 is a combined two–stage chroma amplifier and functional control circuit. The input signal is received from the video amplifier and applied to Pin2 of the input amplifier stage. The first amplifier stage is part of the ACC system and is controlled by differential adjustment from the ACC input Pin1 and Pin14. The output of the 1st amplifier is directed to Pin6 from where the signal may be applied to the ACC detection system of the NTE714 or an equivalent circuit. The output at Pin6 is also applied to Pin7 which is the input to the 2nd amplifier stage. Another output of the 1st amplifier at Pin13 is directed to the killer adjustment circuit. The DC voltage level at Pin13 rises as the ACC differential voltage decreases with a reduction in the burst amplitude. At a pre–set conditions determined by the killer adjustment resistor the killercircuit is activated and causes the 2nd chroma amplifier stage to be cut off. The 2nd chroma amplifier stage is also gain controlled by the adjustment of DC voltage at Pin10. The output of the 2nd chroma amplifier stage is available at Pin9. Both amplifier outputs utilize emitter–followers with short–circuit protection. Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) DC Supply Voltage (Pin8 to Pin4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30V Device Dissipation (Up to TA = +70°C), PD . . . . . . . . ....