Pin 1 (RF AGC DELAY)
1
internal
driving current : 3mA
Pin 2 (APC FILTER)
Bias
2
12kΩ
Pin 3 (EQ INPUT)
3
MITSUBISHI ICs (TV)
M52334FP
PLL-SPLIT VIF/SIF IC
An output amplitude is positive 2.2VP-P in the case of 87.5%
video modulation.
1.4VO-P
In the locked state, the cut-off frequency of the filter is
adjusted effectively by an external resistor so that it will be
in the range of around 30 to 200kHz.
In case the cut-off frequency is lower, the pull-in speed
becomes slow. On the other hand, a higher cut-off frequency
widen the pull-in range and band width, which results
in a degradation in the S/N ratio. So, in the actual TV system
design, the appropriate constant should be chosen for getting
desirable performance considering above conditions.
[V2]
3.0VO-P
fo
[IF input frequency]
[Pin 2 output]
[FM mod. frequency]
100kHz
It is an open-base input.
The IF AGC does not work correctly, unless a DC element
of pin 8 output is applied to it.
Pin 4 (REG. OUTPUT)
4
10.5kΩ
3.8kΩ
It is a regulated 5V output which has current drive
capability of approximately 10mA.
8