ML6424 Micro Linear, ML6424 Datasheet - Page 3

• Manufacturer Part Number: ML6424
• Description: CCIR601 Video Lowpass Filter with Optional Sinx/x Correction
• Manufacturer: Micro Linear

PIN DESCRIPTION
Pin #
1,3,
5,11
2,10,
14
4
6,7
8
9
MODE
Float
High
Low
Name
V
GND
PULSE I/O U/V clamp switch control input/output
V
V
RANGE
R
EXT
CC
IN
IN
P,
M
Description
Positive supply voltages
(4.75V to 5.25V).
Ground voltages.
pin. When MODE is low, U/V clamp
control pulse can be applied to this
input pin. When MODE is high, the
internal circuit generates a U/V clamp
control signal to produce an output
pulse at this pin. When MODE is
floating, do not apply any voltage to
this pin since it is internally tied low in
this case. (See table below)
Input to the filter. The input voltage for
the filter is applied to V
respect to V
grounded. (With no connection to
MODE pin, input signal range should
be from V
RANGE = Low, V
RANGE = High). There is a 100 A
internal current source connected to
each of these inputs.
Input signal range control when
MODE is floating. When RANGE is
low, the input signal range is 0.5V to
1.5V, when RANGE is tied high the
input signal range is 0V to 1V.
Precision resistor to ground that
defines the cutoff frequency of the
filter. (Typical value = 10k )
10% change in R
change in f
Pulse Mode Table
INPUT COUPLING
AC for U/V
AC for Y
DC
IN
C
IN
= 0.5V to 1.5V when
(Fig. 28).
M pin which is
EXT
IN
= 0V to 1V when
produces a 10%
Internally biased
IN
P pin with
Output
PULSE
Input
Pin #
12
13
15,16
SELECT
GAIN INPUT INPUT
Float
High
Low
Name
MODE
GAIN
V
V
1V
1V
1V
OUT
OUT
PP
PP
PP
M
P,
BUFFER
GAIN
0.75
0.75
1.50
Description
Input coupling mode control pin.
When MODE is low, U/V signal can
be applied through an external ac
coupling capacitor to V
MODE is high, Y signal can be applied
through an external AC coupling
capacitor to V
internal circuitry clamps the sinc tip of
the video input signal. When MODE is
set to mid supply or left floating, input
signal can be directly applied to the
input without an AC coupling capacitor.
Three state gain control pin. GAIN tied
low sets the input amplifier gain to 3/4
(0.75) and the output amplifier gain to
4/3 (1.333). When GAIN is tied high,
the input amplifier gain is 3/2 (1.5) and
the output amplifier gain is 4/3. When
GAIN is set to mid supply or left to
float, the input amplifier gain is 3/4
and the output gain is 8/3 (2.666).
(See table below)
The output from the filter is derived
from the V
the V
typically. It can drive 1V
to 1.5V) or 2V
If the ouput common-mode level
needs to be increased, it can be done
by raising the potential of V
this case, the output is measured from
V
OUT
OUT
Gain Table
P with respect to GND.
OUTPUT
ML6424/ML6425
BUFFER
GAIN
1.333
2.666
1.333
M pin which is grounded
OUT
IN
PP
P pin with respect to
/150 (0.5V to 2.5V).
P. In this case, an
OUTPUT OPTIMIZES
1V
2V
2V
PP
PP
PP
IN
PP
P. When
/75
OUT
Differential
& Gain
Phase
Noise
(0.5V
M. In
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