Small signal combination IC for colour TV

• Gain controlled vision IF amplifier
• Synchronous demodulator for
negative and positive demodulation
• AGC detector operating on peak
sync amplitude for negative
demodulation and on vision peak
white level for positive
demodulation
• Tuner AGC
• AFC circuit with on/off-switch
• Video preamplifier
• Video switch to select either the
internal video signal or an external
video signal
• Horizontal oscillator and
synchronization circuit with two
control loops
• Vertical synchronization (divider
system), ramp generator and driver
with automatic amplitude
adjustment for 50 and 60 Hz
• Transmitter identification (mute)
• Sandcastle pulse generation
• Auto VCR switch
• 50/60 Hz identification