Features:
o Very high input sensitivity
o Very low intermodulation
products
0 Minimal differential error
0 Constant input impedance in-
dependent of AGC
0 Video signal hardly affected
by supply voltage variations
0 Fixed video output voltage
with small tolerance range
o Very few external components
0 Positive or negative gating pulse
o Extreme fast AGC action, optimised
for fast search tuning systems
0 Positive as well as neg. video sig-
nal available from low-impedance
outputs
o TDA 4440 with PNP tuners
0 TDA 4450 with NPN tuners