M52334FP

Rev.2.00 Jun 14, 2006 page 13 of 18

Pin Description

Pin 1 (EQ OUT)

Internal driving current: 3 mA

1

video modulation.

Pin 2 (APC FILTER)

2

Bias

+

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)

fo

(IF input frequency)

(FM mod. frequency)

100 kHz

(Pin 2 output)

12 k

Pin 3 (EQ IN)

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.

3

Pin 4 (Vreg. OUT)

It is a regulated 5 V output which has current drive capability

of approximately 10 mA.

+

10.5 k

3.8 k

4