M52334FP
Pin Description
Pin 1 (EQ OUT)
An output amplitude is positive 2.2 V
P-P
in the case of 87.5%
video modulation.
1
Internal driving current: 3 mA
1.4 V
O-P
Pin 2 (APC FILTER)
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 200 kHz.
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)
(Pin 2 output)
Bias
12 k
2
+
3.0 V
O-P
(FM mod. frequency)
fo
(IF input frequency)
100 kHz
Pin 3 (EQ IN)
3
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 (Vreg. OUT)
4
10.5 k
3.8 k
+
It is a regulated 5 V output which has current drive capability
of approximately 10 mA.
Rev.2.00 Jun 14, 2006 page 13 of 18
RENESAS [ RENESAS TECHNOLOGY CORP ]
