Fairchild ML6429 75â ¦ quad video cable drivers and filters with switchable input Datasheet

ML6429
75Ω Quad Video Cable Drivers and Filters
with Switchable Inputs
GENERAL DESCRIPTION
FEATURES
The ML6429 is a quad 4th-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.
■
Cable drivers for Peritel (SCART), Enhanced Video
Connector (EVC), and standard video connectors, 75Ω
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 4th-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
1VP-P input signals from DACs are AC coupled into the
ML6429, where they are DC restored. Outputs are AC
coupled, and drive 2VP-P into a 150Ω 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.
■
■
2kV ESD guaranteed
Master-slave configuration allows up to 8 multiplexed,
filtered output signals
BLOCK DIAGRAM
2
CVINF/Y1*
REQUIRED
SYNC STRIP
FILTERED CHANNEL
SYNC
TIMER
SYNCIN
4th-ORDER
FILTER
17
22
6
VCCORGB
VCCOCV
VCC
14
SWAP CVF
13
SWAP CVU
+
–
TRANSCONDUCTANCE
ERROR AMP
0.5V
23
SYNCOUT
SYNC
TIMER
24
3
4
7
8
9
10
11
12
×2
CVINUA/Y2*
CVINUB/Y3*
MUX
TRANSCONDUCTANCE
ERROR AMP
RINA/Y4
RINB/Y5
TRANSCONDUCTANCE
ERROR AMP
BINA/C1
BINB/C2
–
+
–
–
20
+
–
*CAN ALSO INPUT SYNC ON GREEN SIGNALS
4th-ORDER
FILTER
×2
4th-ORDER
FILTER
×2
4th-ORDER
FILTER
×2
ROUT/YOUTC
18
GOUT/YOUTD
16
0.5V
MUX
TRANSCONDUCTANCE
ERROR AMP
CVOUT2/YOUTB
0.5V
+
A/B MUX
1
0.5V
MUX
TRANSCONDUCTANCE
ERROR AMP
×2
21
+
MUX
GINA/Y6
GINB/Y7
SWAP
MUX
CVOUT1/YOUTA
BOUT/COUT
15
0.75V
GNDO
GND
19
5
REV. 1.1 2/8/2001
ML6429
PIN CONFIGURATION
ML6429
24-Pin SOIC (S24)
A/B MUX
1
24
SYNCOUT
CVINF/Y1
2
23
SYNCIN
CVINUA/Y2
3
22
VCCOCV
CVINUB/Y3
4
21
CVOUT1/YOUTA
GND
5
20
CVOUT2/YOUTB
VCC
6
19
GNDO
RINA/Y4
7
18
ROUT/YOUTC
RINB/Y5
8
17
VCCORGB
GINA/Y6
9
16
GOUT/YOUTD
GINB/Y7
10
15
BOUT/COUT
BINA/C1
11
14
SWAP CVF
BINB/C2
12
13
SWAP CVU
TOP VIEW
PIN DESCRIPTION
PIN
1
2
3
4
2
NAME
FUNCTION
A/B MU X
CVINF/Y1
PIN
NAME
FUNCTION
Logic input pin to select between Bank
<A> or <B> of the CV, RGB, or Y/C
inputs. Internally pulled high.
5
GND
Analog ground
6
VCC
Analog 5V supply
Filtered analog composite video or
luma video input.
7
RINA/Y4
Filtered analog RED video or luma
video input for Bank <A>
8
RINB / Y5
Filtered analog RED video or luma
video input for Bank <B>
9
GINA/Y6
Filtered analog GREEN video or
luma video input for Bank <A>
10
GINB/Y7
Filtered analog GREEN video or
luma video input for Bank <B>
11
BINA/C1
Filtered analog BLUE video or
chroma video input for Bank <A>
12
BINB/C2
Filtered analog BLUE video or
chroma video input for Bank <B>
13
SWAP CVU
Logic input pin to select whether
the outputs of CVOUT1/YOUTA and
CVOUT2/YOUTB are from filtered
or unfiltered CV sources. See Table
1. Internally pulled low.
14
SWAP CVF
Logic input pin to select whether
the outputs of CVOUT1/YOUTA and
CVOUT2/YOUTB are from filtered
or unfiltered CV sources. See Table
1. Internally pulled low.
CVINUA/Y2 Unfiltered analog composite video or
luma video input for Bank <A>.
A composite or luma or green signal
must be present on CVINUA/Y2 or
CVINUB/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)
CVINUB/Y3 Unfiltered analog composite video or
luma video input input for Bank <B>.
A composite or luma or green signal
must be present on CVINUA/Y2 or
CVINUB/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)
REV. 1.1 2/8/2001
ML6429
PIN DESCRIPTION
PIN
NAME
15
BOUT/COUT Analog BLUE video output or chroma
output from either BINA/C1 or BINB/C2
21
CVOUT1/YOUTA Composite video output for
channel 1 or luma output.
16
GOUT/YOUTD Analog GREEN video output or luma
output from either GINA/Y6 or GINB/
Y7
22
VCCOCV
5V power supply for output buffers
of the CV drivers.
23
SYNCIN
17
VCCORGB
18
ROUT/YOUTC Analog RED video output or luma
output from either RINA/Y4 or RINB/Y5
Input for an external H-sync logic
signal for CVU and RGB channels.
TTL or CMOS. For normal
operation, SYNCOUT is
connected to SYNCIN.
24
SYNCOUT
19
GNDO
20
CVOUT2/YOUTB
Composite video output for
channel 2 or luma output.
Logic output for H-sync detect for
CVINUA/Y2 or CVINUB/Y3. TTL or
CMOS. For normal operation,
SYNCOUT is connected to
SYNCIN.
REV. 1.1 2/8/2001
FUNCTION
PIN
NAME
5V power supply for output buffers of
the RGB drivers
Ground for output buffers
FUNCTION
3
ML6429
ABSOLUTE MAXIMUM RATINGS
Storage Temperature Range...................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ..................... 260°C
Thermal Resistance (θJA) ...................................... 80°C/W
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.
OPERATING CONDITIONS
VCC .................................................................................................. 6V
Junction Temperature ............................................. 150°C
ESD ..................................................................... >2000V
Temperature Range ........................................ 0°C to 70°C
VCC Range ................................................... 4.5V to 5.5V
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, VCC = 5V ±10%, TA = Operating Temperature Range (Note 1)
SYMBOL
PARAMETER
CONDITIONS
ICC
Supply Current
No Load (VCC = 5V)
AV
Low Frequency Gain (All Channels)
VIN = 100mVP-P at 300kHz
VSYNC
TYP
MAX
90
UNITS
mA
5.34
6.0
6.65
dB
Channel Sync Output Level CV/Y, R/Y, G/Y Sync Present and Clamp Settled
0.7
0.9
1.1
V
B/C
Sync Present and Clamp Settled
1.2
1.4
1.5
V
Unfiltered
Sync Present and Clamp Settled
0.8
1.0
1.2
V
t CLAMP
Clamp Response Time
Settled to Within 10mV, CIN=0.1µF
10
ms
f 0.5dB
0.5dB Bandwidth
(Flatness. All Filtered Channels)
All Outputs
4.5
MHz
fC
–3dB Bandwidth
(Flatness. All Filtered Channels)
All Outputs (with no Peaking Cap.
See Figures 1 and 12)
7.1
MHz
0.8 x fC Attenuation, All Filtered Channels
All Outputs
1.5
dB
fSB
Stopband Rejection
All Filtered Channels
fIN = 27MHz to 100MHz worst case
(See Figures 2 and 13)
–35
–41
dB
Vi
Input Signal Dynamic Range (All Channels) AC Coupled
1.25
1.35
VP-P
1
mVRMS
4.3
%
120
mA
0.8fC
NOISE
6.8
Output Noise (All Channels)
Over a Frequency Band
of 25Hz-50MHz
OS
Peak Overshoot (All Channels)
2VP-P Output Pulse
ISC
Output Short Circuit Current (All Channels) Note 2
CL
Output Shunt Capacitance (All Channels)
Load at the Output Pin
dG
Differential Gain (All Channels)
All Outputs
0.4
%
dΦ
Differential Phase (All Channels)
All Outputs
0.4
º
THD
Output Distortion (All Channels)
VOUT = 1.8VP-P at 3.58/4.43MHz
0.4
%
Crosstalk
Input of .5VP-P at 3.58/4.43MHz
on any channel to output of any
other channel
–55
dB
Input of 0.5VP-P at 3.58/4.43MHz
–54
dB
Input of 0.5VP-P at 3.58/4.43MHz
–52
dB
XTALK
Input A/B MUX Crosstalk
Swap Mux Crosstalk
4
MIN
35
pF
REV. 1.1 2/8/2001
ML6429
ELECTRICAL CHARACTERISTICS
SYMBOL
PSRR
(Continued)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
PSRR (All Channels)
0.5VP-P (100kHz) at VCC
–39
dB
t pd
Group Delay (All Channels)
at 100kHz
60
ns
∆tpd
Group Delay Deviation from Flatness
to 3.58MHz (NTSC)
4
ns
(See Figures 3 and 14)
to 4.43MHz (PAL)
7
ns
(All Channels)
to 10MHz
12
ns
V IH
Input Voltage Logic High
A/B MUX, SWAP CVU, SWAP CVF
VIL
Input Voltage Logic Low
A/B MUX, SWAP CVU, SWAP CVF
Note 1:
Limits are guaranteed by 100% testing, sampling, or correlation with worst case test conditions.
Note 2:
Sustained short circuit protection limited to 10 seconds.
REV. 1.1 2/8/2001
2.5
V
1
V
5
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 4th-order Butterworth
characteristic with an optimization toward low overshoot
and flat group delay. All outputs are capable of driving
2VP-P into AC coupled 150Ω video loads, with up to 35pF
of load capacitance at the output pin. Likewise, they are
capable of driving a 75Ω load at 1VP-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 CVOUT1/YOUTA and CVOUT2/YOUTB are each
independently selectable between three input sources
(CVINF, and CVINUA, CVINUB) depending on the digital
inputs SWAP CVF, SWAP CVU, and A/B 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 CVINF
or CVINFA, CVINUB (See Table 1). If SWAP CVF is forced
to logic low, then CVOUT2/YOUTB sources from CVINUA/
Y2, CVINUB/Y3. If SWAP CVU is logic low, CVOUT1/
YOUTA outputs video from the CVINUA, CVINUB input. If
SWAP CVF is logic high, CVOUT2/YOUTB outputs from
CVINF/Y1 input. If SWAP CVU is high, CVOUT1/YOUTA
outputs from CVINUA/Y2 or CVINUB/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 VCC 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 CVINUA, CVINUB input. In the absence of sync on the
CVINUA or CVINUB input of the “slave” ML6429, the
“slave” IC will have its SYNC IN input connected to the
SYNC OUT output of the “master” ML6429.
6
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 CVINF/Y1 input. The
other sync detector controls the DC restore functions for
the filtered channels based upon the composite or luma
input at the CVINUA/Y2 or CVINUB/Y3 pins.
Required Setup: A composite or luma or green signal
must be present on CVINUA/Y2 or CVINUB/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 CVINUA/Y2 or
CVINUB/Y3.
The SYNCOUT pin outputs a logic high when it detects
the horizontal sync of either the CVINUA/Y2 or CVINUB/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 CVINUdoes 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 75Ω 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 150Ω load at 2VP-P or
1VP-P into a 75Ω 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/B MUX is forced to logic high, it will select Bank<A>
of video inputs (CVINUA/Y2, RINA/Y4, GINA/Y6, BINA/C1)
to be enabled. If A/B MUX is logic low, then Bank<B> of
video inputs (CVINUB/Y3, RINB/Y5,GINB/Y7, BINB/C2) will
be selected. If the A/B MUX is open, it will pull to logic
high.
REV. 1.1 2/8/2001
1
20
0
0
AMPLITUDE (dB)
AMPLITUDE (dB)
ML6429
–1
–2
–3
–4
–20
–40
–60
0
0.1
1
–80
0.01
10
0.1
FREQUENCY (MHz)
1
10
100
FREQUENCY (MHz)
Figure 1. Passband Flatness (Normalized)
All outputs. Passband is ripple-free.
Figure 2. Passband/Stopband Rejection Ratios
(Normalized) All outputs.
90
DELAY (ns)
70
50
30
10
1
2
3
4
5
6
7
8
9
10
11
FREQUENCY (MHz)
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.
A/B MUX
INPUTS
SWAP CVF
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
SWAP CVU CVOUT1/YOUTA CVOUT2/YOUTB
0
1
0
1
0
1
0
1
CVINF/Y1
CVINF/Y1
CVINUB/Y3
CVINUB/Y3
CVINF/Y1
CVINF/Y1
CVINUA/Y2
CVINUA/Y2
CVINUB/Y3
CVINF/Y1
CVINUB/Y3
CVINF/Y1
CVINUA/Y2
CVINF/Y1
CVINUA/Y2
CVINF/Y1
OUTPUTS
ROUT/YOUTC
GOUT/YOUTD
BOUT/COUT
RINB/Y5
RINB/Y5
RINB/Y5
RINB/Y5
RINA/Y4
RINA/Y4
RINA/Y4
RINA/Y4
GINB/Y7
GINB/Y7
GINB/Y7
GINB/Y7
GINA/Y6
GINA/Y6
GINA/Y6
GINA/Y6
BINB/C2
BINB/C2
BINB/C2
BINB/C2
BINA/C1
BINA/C1
BINA/C1
BINA/C1
Table 1. Selecting Composite, Luma, RGB, and Chroma Outputs
REV. 1.1 2/8/2001
7
ML6429
TYPICAL APPLICATIONS
BASIC APPLICATIONS
CHANNEL MULTIPLEXING
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 (75Ω 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.
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/B MUX,
SWAP CVU, and SWAP CVF signals can be used to select
and route from various input sources.
EVC CABLE DRIVING
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 75Ω 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
swap–mux and 5th line driver can be configured to enable
the filtered composite signal on both the 4th and 5th line
drivers. Thus, the composite load driving requirement is
divided into two line drivers versus one.
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 4th-order Butterworth filters and driven through
internal 75Ω 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).
8
DC COUPLED APPLICATIONS
The 220µF capacitor coupled with the 150Ω 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.
Required Setup: A composite or luma or green signal must
be present on CVINUA/Y2 or CVINUB/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 CVINUA/Y2 or CVINUB/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.
REV. 1.1 2/8/2001
ML6429
2
3
4
7
8
9
10
11
12
19
GNDO
CVINF/Y1
5
GND
17
VCCORGB
22
VCCOCV
6
VCC
220µF
CVOUT1/YOUTA
CVINUA/Y2
VIDEO CABLES
75Ω
CV/Y
21
MODULATOR
CVINUB/Y3
220µF
RINA/Y4
CVOUT2/YOUTB
RINB/Y5
75Ω
CV/Y
20
MODULATOR
ML6429
GINA/Y6
ROUT/YOUTC
GINB/Y7
GOUT/YOUTD
BINA/C1
BINB/C2
BOUT/COUT
SYNCIN
23
SYNCOUT
24
A/B MUX
1
220µF
75Ω
R/Y
18
220µF
75Ω
G/Y
16
220µF
75Ω
B/C
15
SWAP CVU SWAP CVF
13
14
OPTIONAL FOR DC COUPLED APPLICATIONS
H SYNC OUT
INPUTS
Bank A:
Bank B:
Other:
OUTPUTS
RGB, CV filtered path
RGB, CV filtered path
CV unfiltered path, Sync IN (slave mode)
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)
Figure 4. Basic Application for NTSC
2
COMPOSITE
VIDEO IN
3
4
LUMA IN
7
8
9
10
CHROMA IN
11
12
19
GNDO
CVINF/Y1
5
GND
17
VCCORGB
22
VCCOCV
6
VCC
CVOUT1/YOUTA
CVINUA/Y2
21
CVINUB/Y3
COMPOSITE
VIDEO OUT
RINA/Y4
CVOUT2/YOUTB
RINB/Y5
ROUT/YOUTC
GINB/Y7
BINA/C1
GOUT/YOUTD
BINB/C2
BOUT/COUT
SYNCIN
23
20
ML6429
GINA/Y6
SYNCOUT
24
A/B MUX
1
18
LUMA
OUT
S-VIDEO
OUT
16
15
TO EVC
CONNECTOR
CHROMA
OUT
SWAP CVU SWAP CVF
13
14
H SYNC OUT
Figure 5. EVC (Enhanced Video Connector) Application: S-Video, Composite, plus H-Sync out
REV. 1.1 2/8/2001
9
ML6429
19
GNDO
2
COMPOSITE
VIDEO IN
3
4
LUMA IN
7
8
9
10
CHROMA IN
11
12
5
GND
17
VCCORGB
22
VCCOCV
CVINF/Y1
6
VCC
CVOUT1/YOUTA
CVINUA/Y2
21
COMPOSITE
VIDEO OUT
CVINUB/Y3
RINA/Y4
CVOUT2/YOUTB
RINB/Y5
20
ML6429
GINA/Y6
ROUT/YOUTC
GINB/Y7
GOUT/YOUTD
BINA/C1
BOUT/COUT
BINB/C2
SYNCIN
23
SYNCOUT
24
A/B MUX
1
18
LUMA
OUT
S-VIDEO
OUT
16
15
CHROMA
OUT
SWAP CVU SWAP CVF
13
14
TO SCART
CONNECTOR
H SYNC OUT
24
SYNC OUT
2
3
4
R INPUT
7
8
RGB INPUT
G INPUT
9
10
B INPUT
11
12
23
SYNC IN
17
VCCORGB
CVINF/Y1
22
VCCOCV
6
VCC
CVOUT1/YOUTA
CVINUA/Y2
21
CVINUB/Y3
RINA/Y4
CVOUT2/YOUTB
RINB/Y5
20
ML6429SLAVE
GINA/Y6
ROUT/YOUTC
GINB/Y7
GOUT/YOUTD
BINA/C1
BOUT/COUT
BINB/C2
GNDO
19
GND
5
A/B MUX
1
18
R OUTPUT
16
G OUTPUT
15
B OUTPUT
RGB
VIDEO
OUT
SWAP CVU SWAP CVF
13
14
Figure 6. SCART (Peritel) + S-Video Application: S-Video, RGB, Composite, plus H-Sync out
10
REV. 1.1 2/8/2001
ML6429
CV
VCR
1kΩ
R
VIDEO RECORDER
G
MODULATOR
B
G
R
B
1kΩ
DIGITAL PLAYER
OR MPEG-2 DECODER
0.1µF
19
GNDO
CV1
2
COMPOSITE VIDEO IN
0.1µF
CV2
3
CV3
0.1µF
4
0.1µF
Y
7
0.1µF
G
8
0.1µF
U
9
0.1µF
R
10
0.1µF
V
11
0.1µF B
12
5
GND
17
VCCORGB
CVINF/Y1
22
VCCOCV
6
VCC
CVOUT1/YOUTA
CVINUA/Y2
220µF
21
CVOUT1
CVINUB/Y3
RINA/Y4
CVOUT2/YOUTB
RINB/Y5
20
COMPOSITE VIDEO OUT, CVOUT2
ML6429
220µF
GINA/Y6
ROUT/YOUTC
GINB/Y7
GOUT/YOUTD
BINA/C1
BOUT/COUT
BINB/C2
SYNCIN
23
SYNCOUT
24
A/B MUX
INPUTS
SWAP CVU
SWAP CVF
CVOUT1
0
1
0
0
0
1
Digital Player
Digital Player
A/B MUX
1
18
16
15
ROUT
MODULATOR
GOUT
TV
BOUT
TV
SWAP CVU SWAP CVF
13
14
OUTPUTS
CVOUT2
VCR
Digital Player
ROUT
GOUT
BOUT
VCR
Digital
Player
VCR
Digital
Player
VCR
Digital
Player
Figure 7. Multi-Source CV and RGB Channels
REV. 1.1 2/8/2001
11
ML6429
UNFILTERED
80ns±10ns DELAY
R
OSD
(ON-SCREEN DISPLAY)
PROCESSOR
ML6429
SCART/QUAD VIDEO
FILTER AND DRIVER
G
B
FAST BLANKING INTERVAL
OR ALPHA-KEY SIGNAL
ML6431
GENLOCK/CLOCK
GENERATOR
13.5MHz/
27MHz
FILTERED
ROUTPUT
TO MUX OR
OTHER
PROCESSING
GOUTPUT
BOUTPUT
FAST BLANKING
INTERVAL
OR ALPHA-KEY
SIGNAL
D
Q
Standard
74XX
D'FF
DELAY AT 13.5MHz IS APPROXIMATELY 74ns
Figure 8. Synchronizing the Filter Delay with Fast Blanking or Alpha-Key Signals in OSD Applications
2
3
4
7
8
9
10
11
12
19
GNDO
CVINF/Y1
5
GND
17
VCCORGB
22
VCCOCV
6
VCC
CVOUT1/YOUTA
CVINUA/Y2
220µF
75Ω
VIDEO CABLES
CV/Y
21
330pF
MODULATOR
CVINFB/Y3
220µF
RINA/Y4
CVOUT2/YOUTB
RINB/Y5
ROUT/YOUTC
GINB/Y7
GOUT/YOUTD
BINA/C1
BINB/C2
SYNCIN
23
CV/Y
20
330pF
ML6429
GINA/Y6
BOUT/COUT
SYNCOUT
24
A/B MUX
1
SWAP CVF SWAP CVU
13
14
75Ω
220µF
MODULATOR
75Ω
R/Y
18
220µF
75Ω
G/Y
16
220µF
75Ω
B/C
15
NOT REQUIRED FOR DC COUPLED APPLICATIONS
H SYNC OUT
INPUTS
Bank A:
Bank B:
Other:
OUTPUTS
RGB, CV filtered path
RGB, CV filtered path
CV unfiltered path, Sync IN (slave mode)
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)
Figure 9. Basic Application for PAL
12
REV. 1.1 2/8/2001
ML6429
–0.5
0
1
2
3
4
5
6
7
8
9
10
0.2dB WITH PEAKING
0
1dB
WITHOUT
PEAKING
AMPLITUDE (dB)
0.5
1
1.5
2
300pF
270pF
220pF
2.5
0pF
3
0
1
2
3
4
5
6
7
8
9
10
FREQUENCY (MHz)
Figure 10. NTSC/PAL Video Frequency Response With and Without Peaking Capacitor
0
AMPLITUDE (dB)
–10
NTSC/PAL
–34dB
WITH
PEAKING
–20
–30
NTSC/PAL
–40dB
WITHOUT
PEAKING
300pF
–40
270pF
220pF
0pF
–50
0
3
6
9
12
15
18
21
24
27
30
FREQUENCY (MHz)
Figure 11. Stopband Rejection at 27MHz With and Without Peaking Capacitor
10
8ns
GROUP
DELAY
WITHOUT
PEAKING
DELAY (ns)
0
13ns GROUP
DELAY
WITH 330pF
PEAKING
–10
300pF
270pF
220pF
0pF
–20
0
1
2
3
4
5
6
7
8
9
10
FREQUENCY (MHz)
Figure 12. Group Delay at 5.5MHz (PAL) With and Without Peaking Capacitor
REV. 1.1 2/8/2001
13
ML6429
LEGEND
JPx
MOVABLE
JUMPER
5V
FB1
GND
C12
1µF
C13
0.1µF
FB2
VCCA
1
C10
1µF
C11
0.1µF
2
PERMANENT
SHORT
3
220µF
R24 75Ω
CVOUT1
220µF
R23 75Ω
CVOUT2
YOUT1
VCCO
C14
CVIN1
C15
0.1µF
C16
0.1µF
C17
0.1µF
C18
5
X2
FOURTH
ORDER
FILTER
2
3
4
MUX
7
8
MUX
9
10
C19
CIN1
C20
R5 75Ω
JP2
X2
C3
0.1µF
11
12
MUX
FOURTH
ORDER
FILTER
X2
MUX
FOURTH
ORDER
FILTER
X2
14
24
0.1µF
1
13
R22 75Ω
C34
X2
CVOUT2
YOUT1
330pF
18
C4
220µF
R21 75Ω
YOUT2
16
P2—EVC
13
14
15
C5
220µF
15
R20 75Ω
COUT1
5
4
SW1-A
23
SW1-C
5V
SW1-B
5
13
17
JP3
21
2
3
1
1
GND
14
13
24
23
C21
0.1µF
2
R8 1kΩ
JP6
3
C22
0.1µF
C23
0.1µF
X2
FOURTH
ORDER
FILTER
7
8
MUX
FOURTH
ORDER
FILTER
X2
9
10
MUX
FOURTH
ORDER
FILTER
X2
11
12
MUX
FOURTH
ORDER
FILTER
X2
3
19
16
2
7
3
11
15
X2
MUX
1
21
MUX
3
4
2
JP4
U2
20
C6
220µF
R17 75Ω
C7
220µF
R16 75Ω
C8
220µF
R15 75Ω
C9
220µF
R14 75Ω
CVOUT+
Y+
P1—SCART
R9 1kΩ
BIN
C24
0.1µF
C25
0.1µF
C26
0.1µF
R10 1kΩ
GIN
R11 75Ω
6
C27
RIN
C28
R13 75Ω
17
22
18
16
15
19
BOUT
GOUT
ROUT
5
0.1µF
R12 75Ω
CIN2
220µF
330pF
JP1
1
2
C33
20
R6 1kΩ
HSYNCIN
1
C2
9
2 3
R7
1kΩ
21
MUX
FOURTH
ORDER
FILTER
0.1µF
R4 75Ω
1
19
R3 75Ω
YIN2
1
22
U2
R2 75Ω
YIN1
3 2
17
R1 75Ω
CVIN2
JP5
6
0.1µF
0.1µF
C29
1µF
C30
0.1µF
VCCA
C31
0.1µF
C32
0.1µF
VCCO
Figure 13. Schematic
14
REV. 1.1 2/8/2001
ML6429
PHYSICAL DIMENSIONS
inches (millimeters)
Package: S24
24-Pin SOIC
0.600 - 0.614
(15.24 - 15.60)
24
0.291 - 0.301 0.398 - 0.412
(7.39 - 7.65) (10.11 - 10.47)
PIN 1 ID
1
0.024 - 0.034
(0.61 - 0.86)
(4 PLACES)
0.050 BSC
(1.27 BSC)
0.095 - 0.107
(2.41 - 2.72)
0º - 8º
0.012 - 0.020
(0.30 - 0.51)
0.090 - 0.094
(2.28 - 2.39)
SEATING PLANE
0.005 - 0.013
(0.13 - 0.33)
0.022 - 0.042
(0.56 - 1.07)
0.009 - 0.013
(0.22 - 0.33)
ORDERING INFORMATION
PART NUMBER
TEMPERATURE RANGE
PACKAGE
ML6429CS-1
0°C to 70°C
24 Pin SOIC (S24)
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO
ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME
ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN;
NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
www.fairchildsemi.com
REV. 1.1 2/8/2001
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
© 2000 Fairchild Semiconductor Corporation
15
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