DESCRIPTION
STV5725 is intended for 4 heads VCR applications. Record or Playback Mode can be selected through SWR Pin. SWH allows to select the video head input (H1SP or H2SP, H1LP or H2LP), while SWM will select the mode SP or LP. Playback Mode Signals applied on H1SP, H2SP, H1LP and H2LP input pins will be amplified by 60dB voltage gain. IOUTSP and IOUTLP Pins are AC short-circuited to ground. The input signal can be selected through SWH and SWM inputs and the corresponding output signal will be available on Pin CPB. The offset voltage between the two selected heads is automatically cancelled after 32 switching head cycles. A constant output signal will be available on Pin YPB thanks to an AGC function (Automatic Gain Control). The time constant of the AGC is determined by the capacitor value connected to CAGC Pin. For Automatic Tracking, a signal which is a ORDER CODE : STV5725 PIN CONNECTIONS H1SP GNDSP H2SP IOUTSP CCOM IOUTLP H2LP GNDLP H1LP NC 1 2 3 4 5 6 7 8 9 10 20 SWR 19 SWIN...
STMicroelectronics
