August 1999

PRELIMINARY

ML6429

W Quad Video Cable Drivers and Filters

with Switchable Inputs

GENERAL DESCRIPTION

The ML6429 is a quad 4

-order Butterworth lowpass

reconstruction filter plus quad video amplifier optimized
for minimum overshoot and flat group delay. Each filter
channel has a two-input multiplexer that switches between
two groups of quad video signals. Applications driving
SCART and EVC cables are supported for composite,
component, and RGB video.

P-P

input signals from DACs are AC coupled into the

ML6429, where they are DC restored. Outputs are AC
coupled, and drive 2V

P-P

into a 150

W load. The ML6429

can be used with DC coupled outputs for certain
applications.

A fifth unfiltered channel is provided to support an
additional analog composite video input. A swapping
multiplexer between the two composite channels allows
the distribution amplifiers to output from either input.

Several ML6429s can be arranged in a master-slave
configuration where an external sync can be used for CV
and RGB outputs.

BLOCK DIAGRAM

CVINF/Y1*

SYNCIN

SYNCOUT

CVINUA/Y2*

CVINUB/Y3*

GINA/Y6

GINB/Y7

A/B MUX

BINA/C1

BINB/C2

RINA/Y4

RINB/Y5

CVOUT1/YOUTA

CVOUT2/YOUTB

ROUT/YOUTC

GOUT/YOUTD

BOUT/COUT

TRANSCONDUCTANCE

ERROR AMP

4th-ORDER

FILTER

4th-ORDER

FILTER

4th-ORDER

FILTER

4th-ORDER

FILTER

SYNC

TIMER

REQUIRED
SYNC STRIP

SWAP

MUX

TRANSCONDUCTANCE

ERROR AMP

TRANSCONDUCTANCE

ERROR AMP

TRANSCONDUCTANCE

ERROR AMP

TRANSCONDUCTANCE

ERROR AMP

GNDO

VCCORGB

VCCOCV

VCC

SWAP CVF

SWAP CVU

GND

SYNC

TIMER

FILTERED CHANNEL

0.5V

0.75V

*CAN ALSO INPUT SYNC ON GREEN SIGNALS

FEATURES

Cable drivers for Peritel (SCART), Enhanced Video
Connector (EVC), and standard video connectors, 75

cable drivers for CV, S-video, and RGB

7.1MHz cutoffs CV, RGB, and S-video, NTSC or PAL
filters with mux inputs and output channel mux

7.1MHz to 8.4MHz cutoffs achievable with peaking
capacitor

Quad 4

-order reconstruction or dual anti-aliasing filter

41dB stopband attenuation at 27MHz, 0.5dB flatness
up to 4.5MHz

12ns group delay flatness up to 10MHz

0.4% differential gain, 0.4º differential phase on all
channels, 0.4% total harmonic distortion on all channels

2kV ESD guaranteed

Master-slave configuration allows up to 8 multiplexed,
filtered output signals

ML6429

PIN

NAME

FUNCTION

MU X

Logic input pin to select between Bank
<A> or of the CV, RGB, or Y/C
inputs. Internally pulled high.

INF

/Y1

Filtered analog composite video or
luma video input.

INU

A/Y2 Unfiltered analog composite video or

luma video input for Bank <A>.
A composite or luma or green signal
must be present on CV

INU

A/Y2 or

INU

B/Y3 inputs to provide

necessary sync signals to other
channels (R,G,B,Y,C). Otherwise, sync
must be provided at SYNCIN. For RGB
applications, the green channel with
sync can be used as an input to this
pin. (see RGB Applications section)

INU

B/Y3 Unfiltered analog composite video or

luma video input input for Bank .
A composite or luma or green signal
must be present on CV

INU

A/Y2 or

INU

B/Y3 inputs to provide

PIN CONFIGURATION

A/B MUX

CVINF/Y1

CVINUA/Y2

CVINUB/Y3

GND

VCC

RINA/Y4

RINB/Y5

GINA/Y6

GINB/Y7

BINA/C1

BINB/C2

SYNCOUT

SYNCIN

VCCOCV

CVOUT1/YOUTA

CVOUT2/YOUTB

GNDO

ROUT/YOUTC

VCCORGB

GOUT/YOUTD

BOUT/COUT

SWAP CVF

SWAP CVU

TOP VIEW

ML6429

24-Pin SOIC (S24)

PIN DESCRIPTION

PIN

NAME

FUNCTION

GND

Analog ground

Analog 5V supply

A/Y4

Filtered analog RED video or luma
video input for Bank <A>

B / Y5

Filtered analog RED video or luma
video input for Bank

A/Y6

Filtered analog GREEN video or
luma video input for Bank <A>

B/Y7

Filtered analog GREEN video or
luma video input for Bank

A/C1

Filtered analog BLUE video or
chroma video input for Bank <A>

B/C2

Filtered analog BLUE video or
chroma video input for Bank

SWAP CVU

Logic input pin to select whether
the outputs of CV

OUT

1/Y

OUT

A and

OUT

2/Y

OUT

B are from filtered

or unfiltered CV sources. See Table
1. Internally pulled low.

SWAP CVF

Logic input pin to select whether
the outputs of CV

OUT

1/Y

OUT

A and

OUT

2/Y

OUT

B are from filtered

or unfiltered CV sources. See Table
1. Internally pulled low.

ML6429

ELECTRICAL CHARACTERISTICS

Unless otherwise specified, V

= 5V ±10%, T

= Operating Temperature Range (Note 1)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Current

No Load (V

= 5V)

Low Frequency Gain (All Channels)

= 100mV

P-P

at 300kHz

5.34

6.0

6.65

SYNC

Channel Sync Output Level

CV/Y, R/Y, G/Y

Sync Present and Clamp Settled

0.6

0.9

1.1

B/C

Sync Present and Clamp Settled

1.2

1.4

1.5

Unfiltered

Sync Present and Clamp Settled

0.7

1.0

1.2

CLAMP

Clamp Response Time

Settled to Within 10mV, C

=0.1µF

0.5dB

0.5dB Bandwidth

All Outputs

4.5

MHz

(Flatness. All Filtered Channels)

3dB Bandwidth

All Outputs

(with no Peaking Cap.

6.7

7.1

MHz

(Flatness. All Filtered Channels)

See Figures 1 and 12)

0.8f

0.8 x f

Attenuation, All Filtered Channels

All Outputs

1.5

Stopband Rejection

All Filtered Channels

= 27MHz to 100MHz worst case

(See Figures 2 and 13)

Input Signal Dynamic Range (All Channels) AC Coupled

1.25

1.35

P-P

NOISE

Output Noise (All Channels)

Over a Frequency Band

RMS

of 25Hz-50MHz

Peak Overshoot (All Channels)

P-P

Output Pulse

4.3

Output Short Circuit Current (All Channels) Note 2

120

Output Shunt Capacitance (All Channels)

Load at the Output Pin

Differential Gain (All Channels)

All Outputs

0.4

Differential Phase (All Channels)

All Outputs

0.4

Output Distortion (All Channels)

OUT

= 1.8V

P-P

at 3.58/4.43MHz

0.4

TALK

Crosstalk

Input of .5V

P-P

at 3.58/4.43MHz

on any channel to output of any
other channel

Input A/

MUX Crosstalk

Input of 0.5V

P-P

at 3.58/4.43MHz

Swap Mux Crosstalk

Input of 0.5V

P-P

at 3.58/4.43MHz

ABSOLUTE MAXIMUM RATINGS

Absolute maximum ratings are those values beyond which
the device could be permanently damaged. Absolute
maximum ratings are stress ratings only and functional
device operation is not implied.

CC ..................................................................................................

Junction Temperature ............................................. 150°C
ESD ..................................................................... >2000V

Storage Temperature Range...................... 65°C to 150°C
Lead Temperature (Soldering, 10 sec) ..................... 260°C
Thermal Resistance (

) ...................................... 80°C/W

OPERATING CONDITIONS

Temperature Range ........................................ 0°C to 70°C
V

Range ................................................... 4.5V to 5.5V

ML6429

FUNCTIONAL DESCRIPTION

The ML6429 is a quad monolithic continuous time analog
video filter designed for reconstructing signals from four
video D/A sources. The ML6429 is intended for use in AC
coupled input and output applications.

The filters approximate a 4

-order Butterworth

characteristic with an optimization toward low overshoot
and flat group delay. All outputs are capable of driving
2V

P-P

into AC coupled 150

W video loads, with up to 35pF

of load capacitance at the output pin. Likewise, they are
capable of driving a 75

W load at 1V

P-P

All channels are clamped during sync to establish the
appropriate output voltage swing range. Thus the input
coupling capacitors do not behave according to the
conventional RC time constant. Clamping for all channels
settles within 10ms of a change in video sources.

Input coupling capacitors of 0.1µF are reccommended for
all channels. During sync, a feedback error amplifier
sources/sinks current to restore the DC level. The net result
is that the average input current is zero. Any change in the
input coupling capacitors value will linearly affect the
clamp response times.

The RGB channels have no pulldown current sources and
are essentially tilt-free. The CV channel's inputs sink less
than 1µA during active video, resulting in a tilt of less than
1mV for a 220 µF. Up to 1000µF recommended to reude
tilt for TV applications.

SWAP MULTIPLEXER CONTROL

Output pins CV

OUT

1/Y

OUT

and CV

OUT

2/Y

OUT

B are each

independently selectable between three input sources
(CV

INF,

and CV

INU

A, CV

INU

B) depending on the digital

inputs SWAP CVF, SWAP CVU, and A/

MUX. This allows

the two outputs to remain independent and pass straight
through, to remain independent but swapped, or for both
outputs to have the same signal sourcing from either CV

INF

or CV

INF

A, CV

INU

B (See Table 1). If SWAP CVF is forced

to logic low, then CV

OUT2

OUT

B sources from CV

INU

Y2, CV

INU

B/Y3. If SWAP CVU is logic low, CV

OUT1

OUT

outputs video from the CV

INU

A, CV

INU

input. If

SWAP CVF is logic high, CV

OUT2

/YOUTB

outputs from

INF

/Y1 input. If SWAP CVU is high, CV

OUT1

OUT

outputs from CV

INU

A/Y2 or CV

INU

B/Y3. Both SWAP CVF

and SWAP CVU will pull low if they are not driven.

The ML6429 is robust and stable under all stated load and
input conditions. Bypassing both V

pins directly to

ground ensures this performance. Two ML6429's can be
connected in a master-slave sync configuration. When
using this configuration, only the "master" ML6429 is
required to have a signal with embedded sync present on
the CV

INU

A, CV

INU

input. In the absence of sync on the

INU

A or CV

INU

input of the "slave" ML6429, the

"slave" IC will have its SYNC IN input connected to the
SYNC OUT output of the "master" ML6429.

SYNCIN AND SYNCOUT PINS

Each ML6429 has two sync detectors which control the
DC restore functions. The filtered channel has its own
detector, which controls the DC restore function during
the horizontal sync period of the CV

INF

/Y1 input. The

other sync detector controls the DC restore functions for
the filtered channels based upon the composite or luma
input at the CV

INU

A/Y2 or CV

INU

B/Y3 pins.

Required Setup: A composite or luma or green signal
must be present on CV

INU

A/Y2 or CV

INU

B/Y3 inputs to

provide necessary sync signals to other channels
(R,G,B,Y,C). Otherwise, sync must be provided at the
SYNCIN pin. For RGB applications, the green channel
with sync can be used as an input to CV

INU

A/Y2 or

INU

B/Y3.

The SYNCOUT pin outputs a logic high when it detects
the horizontal sync of either the CV

INU

A/Y2 or CV

INU

B/Y3

input (note that one input is selected by the A/B MUX pin).

The SYNCIN pin is an input for an external H-sync logic
signal to enable or disable the internal DC restore loop for
the filtered channels. When SYNCIN is logic high, the DC
restore function is enabled.

For normal operation, the SYNCOUT pin is connected to
the SYNCIN pin (see Figure 4). If the CV

INU

does not have

an embedded sync, an external sync can be applied on
the SYNCIN pin. In master-slave configurations, the
SYNCOUT of a ML6429 master can be used as the
SYNCIN of a ML6429 slave.

VIDEO I/O DESCRIPTION

Each input is driven by either a low impedance source or
the output of a 75

W terminated line. The input is required

to be AC coupled via a 0.1µF coupling capacitor which
gives a nominal clamping time of 10ms. All outputs are
capable of driving an AC coupled 150

W load at 2V

P-P

into a 75

W load. At the output pin, up to 35pF of

load capacitance can be driven without stability or slew
issues. A 220µF AC coupling capacitor is recommended at
the output to reduce power consumption.

ANALOG MULTIPLEXER CONTROL

The four filter channels each have two input multiplexers
which are paired to select between two four-channel
video sources (

i.e., composite video plus RGB component

video).

If A/

MUX is forced to logic high, it will select Bank<A>

of video inputs (CV

INU

A/Y2, R

A/Y4, G

A/Y6, B

A/C1)

to be enabled. If A/

MUX is logic low, then Bank of

video inputs (CV

INU

B/Y3, R

B/Y5,G

B/Y7, B

B/C2) will

be selected. If the A/

MUX is open, it will pull to logic

high.

ML6429

Figure 1. Passband Flatness (Normalized)

All outputs. Passband is ripple-free.

Figure 2. Passband/Stopband Rejection Ratios

(Normalized) All outputs.

Figure 3. Group Delay, all Outputs

Low frequency group delay is 62ns. At 3.58MHz group

delay increases by only 4ns. At 4.43MHz group delay

increases by only 7ns. The maximum deviation from flat

group delay of 12ns occurs at 6MHz.

DELA

Y (ns)

FREQUENCY (MHz)

INPUTS

OUTPUTS

MUX

SWAP CVF

SWAP CVU CV

OUT

1/Y

OUT

A CV

OUT

2/Y

OUT

INF

/Y1

INU

B/Y3

B/Y5

B/Y7

B/C2

INF

/Y1

INF

/Y1

B/Y5

B/Y7

B/C2

INU

B/Y3

INU

B/Y3

B/Y5

B/Y7

B/C2

INU

B/Y3

INF

/Y1

B/Y5

B/Y7

B/C2

INF

/Y1

INU

A/Y2

A/Y4

A/Y6

A/C1

INF

/Y1

INF

/Y1

A/Y4

A/Y6

A/C1

INU

A/Y2

INU

A/Y2

A/Y4

A/Y6

A/C1

INU

A/Y2

INF

/Y1

A/Y4

A/Y6

A/C1

Table 1. Selecting Composite, Luma, RGB, and Chroma Outputs

AMPLITUDE (dB)

FREQUENCY (MHz)

0.1

20

40

60

80

AMPLITUDE (dB)

FREQUENCY (MHz)

0.01

0.1

100

ML6429

TYPICAL APPLICATIONS

BASIC APPLICATIONS

The ML6429 provides channels for two banks of inputs for
RGB and composite video. The R and G channels can be
used as luma inputs while the B channel can be used as a
chroma input. Composite outputs and an H-sync output is
also provided. There are several configurations available
with the ML6429. Figure 4 includes a list of basic output
options for composite, S-video, TV modulator, and RGB
outputs. Note that each composite channel can drive a CV
load or a channel modulator simultaneously. The ML6429
standalone can be used as an EVC or SCART cable driver
with nine video sources (75

W or low impedance buffer)

and seven video outputs. All inputs and outputs are AC
coupled. When driving seven loads, power dissipation
must be measured to ensure that the junction temperature
doesn't exceed 120ºC.

EVC CABLE DRIVING

The ML6429 can be configured to drive composite video,
S-video, and horizontal sync through an EVC connector
(Figure 5). Composite video and S-video inputs are filtered
through 4

-order Butterworth filters and driven through

internal 75

W cable drivers. A buffered H-sync output is

also available.

SCART CABLE DRIVING

The ML6429 can be configured either as a SCART cable
driver (Figure 4) or as a SCART cable driver and S-video
driver (Figure 6). A horizontal sync output is also available.
Note that the ML6429 can be used in a master-slave mode
where the sync-out from the master is used as the sync-in
of the slave; this allows the CV, S-video, and RGB channels
to operate under the same sync signals.

Note that in SCART applications, it is not always necessary
to AC couple the outputs. Systems using SCART
connectors for RGB and composite video can typically
handle between 0 and 2V DC offset (see DC Coupled
Applications section).

RGB APPLICATIONS

RGB video can be filtered and driven through the
ML6429. For sync suppressed RGB, the sync signal can be
derived from SYNCIN PIN.

OSD (ON-SCREEN DISPLAY) APPLICATIONS

Unfiltered RGB video from an OSD processor needs to be
filtered and then synchronized to a fast blanking interval
or alpha-key signal for later video processing. With the
total filter delay being 80ns ±10ns, a D flip-flop or similar
delay element can be used to delay the fast blanking
interval or alpha-key signal, which synchronizes the RGB
and OSD signals (Figure 9).

CHANNEL MULTIPLEXING

The ML6429 can be configured for multiple composite
channel multiplexing (Figure 8). Composite and RGB
sources such as VCRs, and digital MPEG 2 sources can be
selected using the ML6429 swap mux controls. A/

MUX,

SWAP CVU, and SWAP CVF signals can be used to select
and route from various input sources.

DC COUPLED APPLICATIONS

The 220µF capacitor coupled with the 150

W termination

forms a highpass filter which blocks the DC while passing
the video frequencies and avoiding tilt. Lower values such
as 10µF would create a problem. By AC coupling, the
average DC level is zero. Thus, the output voltages of all
channels will be centered around zero.

Alternately, DC coupling the output of the ML6429 is
allowable. There are several tradeoffs: The average DC
level on the outputs will be 2V; Each output will dissipate
an additional 40mW nominally; The application will need
to accommodate a 1V DC offset sync tip; And it is
recommended to limit one 75

W load per output. However,

if two loads are required to be driven at a time on the
composite output while DC coupling is used, then the
swapmux and 5

line driver can be configured to enable

the filtered composite signal on both the 4

and 5

line

drivers. Thus, the composite load driving requirement is
divided into two line drivers versus one.

Required Setup: A composite or luma or green signal must
be present on CV

INU

A/Y2 or CV

INU

B/Y3 inputs to provide

necessary sync signals to other channels (R,G,B,Y,C).
Otherwise, sync must be provided at the SYNCIN pin. For
RGB applications, the green channel with sync can be
used as an input to CV

INU

A/Y2 or CV

INU

B/Y3.

USING THE ML6429 FOR PAL APPLICATIONS

The ML6429 can be optimized for PAL video by adding
frequency peaking to the composite and S-video outputs.
Figure 10 illustrates the use of a additional external
capacitor (300pF), added in parallel to the output source
termination resistor. This raises the frequency response
from 1.0dB down at 4.8MHz (for no peaking cap) to 0.2dB
down at 4.8MHz (for 300 pF), which allows for accurate
reproduction of the upper sideband of the PAL subcarrier.
Figure 11 shows the frequency response of PAL video with
various values of peaking capacitors (0pF, 220pF, 270pF,
300pF) between 0 and 10MHz.

For NTSC applications without the peaking capacitor, the
rejection at 27MHz is 40dB (typical). For PAL applications
with the peaking capacitor, the rejection at 27MHz is
34dB (typical). (Figure 12). The differential group delay is
shown in Figure 13 with and without a peaking capacitor
(0pF, 220pF, 270pF, and 300pF) varies slightly with
capacitance; from 8ns to 13ns.

ML6429

Figure 4. Basic Application for NTSC

Figure 5. EVC (Enhanced Video Connector) Application: S-Video, Composite, plus H-Sync out

INPUTS

Bank A:

RGB, CV filtered path

Bank B:

RGB, CV filtered path

Other:

CV unfiltered path, Sync IN (slave mode)

OUTPUTS

Option 1: 2 CV outputs + 2 TV modulator outputs, 1 RGB output
Option 2: 2 CV outputs + 1 TV modulator output, 1 S-video output
Other:

Sync output (buffered stripped sync)

220µF

VIDEO CABLES

CV/Y

MODULATOR

220µF

R/Y

220µF

G/Y

220µF

B/C

H SYNC OUT

OPTIONAL FOR DC COUPLED APPLICATIONS

220µF

CV/Y

MODULATOR

CVOUT1/YOUTA

CVOUT2/YOUTB

ROUT/YOUTC

GOUT/YOUTD

BOUT/COUT

CVINUA/Y2

GINA/Y6

GINB/Y7

BINA/C1

BINB/C2

RINA/Y4

RINB/Y5

CVINUB/Y3

CVINF/Y1

SYNCIN

SYNCOUT

SWAP CVU SWAP CVF

A/B MUX

GNDO

VCCORGB VCCOCV

VCC

GND

ML6429

CVOUT1/YOUTA

H SYNC OUT

S-VIDEO
OUT

CHROMA

OUT

CHROMA IN

LUMA

OUT

LUMA IN

COMPOSITE
VIDEO OUT

TO EVC
CONNECTOR

COMPOSITE

VIDEO IN

CVOUT2/YOUTB

ROUT/YOUTC

GOUT/YOUTD

BOUT/COUT

CVINUA/Y2

GINA/Y6

GINB/Y7

BINA/C1

BINB/C2

RINA/Y4

RINB/Y5

CVINUB/Y3

CVINF/Y1

SYNCIN

SYNCOUT

SWAP CVU SWAP CVF

A/B MUX

GNDO

VCCORGB VCCOCV

VCC

GND

ML6429

ML6429

Figure 6. SCART (Peritel) + S-Video Application: S-Video, RGB, Composite, plus H-Sync out

CVOUT1/YOUTA

H SYNC OUT

R OUTPUT

G OUTPUT

B OUTPUT

S-VIDEO
OUT

CHROMA
OUT

CHROMA IN

LUMA
OUT

LUMA IN

COMPOSITE
VIDEO OUT

COMPOSITE

VIDEO IN

CVOUT2/YOUTB

ROUT/YOUTC

GOUT/YOUTD

BOUT/COUT

CVINUA/Y2

GINA/Y6

GINB/Y7

BINA/C1

BINB/C2

RINA/Y4

RINB/Y5

CVINUB/Y3

CVINF/Y1

SYNCIN

SYNCOUT

SWAP CVU SWAP CVF

A/B MUX

GNDO

VCCORGB VCCOCV

VCC

GND

ML6429

CVOUT1/YOUTA

RGB
VIDEO
OUT

B INPUT

G INPUT

RGB INPUT

R INPUT

CVOUT2/YOUTB

ROUT/YOUTC

GOUT/YOUTD

BOUT/COUT

CVINUA/Y2

GINA/Y6

GINB/Y7

BINA/C1

BINB/C2

RINA/Y4

RINB/Y5

CVINUB/Y3

CVINF/Y1

GNDO

GND

SWAP CVU SWAP CVF

A/B MUX

SYNC OUT

VCCORGB VCCOCV

VCC

SYNC IN

ML6429SLAVE

TO SCART
CONNECTOR

ML6429

INPUTS

OUTPUTS

MUX

SWAP CVU

SWAP CVF

OUT

Digital Player

VCR

Digital Player

Digital

Player

Figure 7. Multi-Source CV and RGB Channels

COMPOSITE VIDEO OUT, CVOUT2

CVOUT1

ROUT

GOUT

BOUT

CVOUT1/YOUTA

CV1

CV2

CV3

COMPOSITE VIDEO IN

MODULATOR

DIGITAL PLAYER

OR MPEG-2 DECODER

VIDEO RECORDER

VCR

CVOUT2/YOUTB

ROUT/YOUTC

GOUT/YOUTD

BOUT/COUT

CVINUA/Y2

GINA/Y6

GINB/Y7

BINA/C1

BINB/C2

RINA/Y4

RINB/Y5

CVINUB/Y3

CVINF/Y1

SYNCIN

SYNCOUT

SWAP CVU SWAP CVF

A/B MUX

GNDO

VCCORGB VCCOCV

VCC

GND

ML6429

0.1µF

220µF

B
G

ML6429

Figure 8. Synchronizing the Filter Delay with Fast Blanking or Alpha-Key Signals in OSD Applications

INPUTS

Bank A:

RGB, CV filtered path

Bank B:

RGB, CV filtered path

Other:

CV unfiltered path, Sync IN (slave mode)

Figure 9. Basic Application for PAL

OUTPUTS

Option 1: 2 CV outputs + 2 TV modulator outputs, 1 RGB output
Option 2: 2 CV outputs + 1 TV modulator output, 1 S-video output
Other:

Sync output (buffered stripped sync)

OSD

(ON-SCREEN DISPLAY)

PROCESSOR

ML6431

GENLOCK/CLOCK

GENERATOR

ML6429

SCART/QUAD VIDEO

FILTER AND DRIVER

ROUTPUT

GOUTPUT

BOUTPUT

Standard

74XX

D'FF

TO MUX OR
OTHER
PROCESSING

UNFILTERED

DELAY AT 13.5MHz IS APPROXIMATELY 74ns

FAST BLANKING INTERVAL
OR ALPHA-KEY SIGNAL

FAST BLANKING
INTERVAL
OR ALPHA-KEY
SIGNAL

13.5MHz/
27MHz

80ns±10ns DELAY

FILTERED

220µF

330pF

VIDEO CABLES

CV/Y

MODULATOR

220µF

R/Y

220µF

G/Y

220µF

B/C

H SYNC OUT

NOT REQUIRED FOR DC COUPLED APPLICATIONS

220µF

CV/Y

MODULATOR

CVOUT1/YOUTA

CVOUT2/YOUTB

ROUT/YOUTC

GOUT/YOUTD

BOUT/COUT

CVINUA/Y2

GINA/Y6

GINB/Y7

BINA/C1

BINB/C2

RINA/Y4

RINB/Y5

CVINFB/Y3

CVINF/Y1

SYNCIN

SYNCOUT

SWAP CVF SWAP CVU

A/B MUX

GNDO

VCCORGB VCCOCV

VCC

GND

ML6429

330pF

ML6429

Figure 13. Schematic

VCCA

VCCO

3
4

7
8

11
12

FOURTH

ORDER

FILTER

MUX

FOURTH

ORDER

FILTER

MUX

FOURTH

ORDER

FILTER

MUX

FOURTH

ORDER

FILTER

MUX

C21

0.1µF

220µF

P1--SCART

P2--EVC

C22

0.1µF

C23

0.1µF

C24

0.1µF

C25

0.1µF

C26

0.1µF

C27

0.1µF

C28

CIN2

0.1µF

C31

0.1µF

C29

1µF

R11 75

R9 1k

R10 1k

R17 75

CVOUT+

Y+

R8 1k

R7
1k

RIN

GIN

BIN

GND

HSYNCIN

220µF

R16 75

BOUT

220µF

R15 75

GOUT

220µF

R14 75

ROUT

SW1-B

SW1-C

SW1-A

3
4

7
8

11
12

FOURTH

ORDER

FILTER

MUX

FOURTH

ORDER

FILTER

MUX

FOURTH

ORDER

FILTER

MUX

FOURTH

ORDER

FILTER

MUX

220µF

C14

0.1µF

C15

0.1µF

C18

0.1µF

C17

0.1µF

C19

0.1µF

C20

R5 75

CIN1

0.1µF

R4 75

R23 75

CVOUT2

YOUT1

CVOUT1

R3 75

CVIN2

CVIN1

R2 75

R1 75

YIN1

YIN2

MOVABLE

JUMPER

PERMANENT
SHORT

220µF

R21 75

YOUT2

220µF

R20 75

COUT1

C30

0.1µF

C32

0.1µF

JP6

JP1

JP2

2 3

JP5

3 2

R12 75

R13 75

R6 1k

JP4

JP3

C33

330pF

C11

0.1µF

C10

1µF

C13

0.1µF

C12

1µF

220µF

R22 75

CVOUT2

YOUT1

C34

330pF

R24 75

VCCA

FB2

VCCO

FB1

GND

LEGEND

JPx

C16

0.1µF

ML6429

DS6429-01

PHYSICAL DIMENSIONS

inches (millimeters)

Micro Linear Corporation

2092 Concourse Drive

San Jose, CA 95131

Tel: (408) 433-5200

Fax: (408) 432-0295

www.microlinear.com

SEATING PLANE

0.291 - 0.301

(7.39 - 7.65)

PIN 1 ID

0.398 - 0.412

(10.11 - 10.47)

0.600 - 0.614

(15.24 - 15.60)

0.012 - 0.020

(0.30 - 0.51)

0.050 BSC
(1.27 BSC)

0.022 - 0.042

(0.56 - 1.07)

0.095 - 0.107

(2.41 - 2.72)

0.005 - 0.013

(0.13 - 0.33)

0.090 - 0.094

(2.28 - 2.39)

0.009 - 0.013

(0.22 - 0.33)

0º - 8º

0.024 - 0.034

(0.61 - 0.86)

(4 PLACES)

Package: S24

24-Pin SOIC

is a registered trademark of Micro Linear Corporation. All other trademarks are the property of their

respective owners.

Products described herein may be covered by one or more of the following U.S. patents: 4,897,611; 4,964,026; 5,027,116; 5,281,862; 5,283,483;
5,418,502; 5,508,570; 5,510,727; 5,523,940; 5,546,017; 5,559,470; 5,565,761; 5,592,128; 5,594,376; 5,652,479; 5,661,427; 5,663,874; 5,672,959;
5,689,167; 5,714,897; 5,717,798; 5,742,151; 5,747,977; 5,754,012; 5,757,174; 5,767,653; 5,777,514; 5,793,168; 5,798,635; 5,804,950; 5,808,455;
5,811,999; 5,818,207; 5,818,669; 5,825,165; 5,825,223; 5,838,723; 5.844,378; 5,844,941. Japan: 2,598,946; 2,619,299; 2,704,176; 2,821,714. Other
patents are pending.

Micro Linear makes no representations or warranties with respect to the accuracy, utility, or completeness of the contents of this publication and
reserves the right to makes changes to specifications and product descriptions at any time without notice. No license, express or implied, by estoppel
or otherwise, to any patents or other intellectual property rights is granted by this document. The circuits contained in this document are offered as
possible applications only. Particular uses or applications may invalidate some of the specifications and/or product descriptions contained herein.
The customer is urged to perform its own engineering review before deciding on a particular application. Micro Linear assumes no liability
whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Micro Linear products including liability or warranties
relating to merchantability, fitness for a particular purpose, or infringement of any intellectual property right. Micro Linear products are not designed
for use in medical, life saving, or life sustaining applications.

ORDERING INFORMATION

PART NUMBER

TEMPERATURE RANGE

PACKAGE

ML6429CS-1

0°C to 70°C

24 Pin SOIC (S24)

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: ML6429

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: ML6429