ML6429CS-1

ML6429 75Ω Quad Video Cable Drivers and Filters with Switchable Inputs GENERAL DESCRIPTION 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. 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. FEATURES I 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 2kV ESD guaranteed Master-slave configuration allows up to 8 multiplexed, filtered output signals I I I I I I I I BLOCK DIAGRAM 17 2 CVINF/Y1* REQUIRED SYNC STRIP FILTERED CHANNEL 4th-ORDER FILTER VCCORGB + – 22 VCCOCV 6 VCC SWAP CVF 14 13 SWAP CVU SYNCIN 23 SYNCOUT 24 3 4 7 8 9 10 11 12 CVINUA/Y2* CVINUB/Y3* RINA/Y4 RINB/Y5 GINA/Y6 GINB/Y7 BINA/C1 BINB/C2 MUX MUX MUX MUX SYNC TIMER TRANSCONDUCTANCE ERROR AMP 0.5V SYNC TIMER SWAP MUX TRANSCONDUCTANCE ERROR AMP + – ×2 CVOUT1/YOUTA 21 ×2 CVOUT2/YOUTB 20 0.5V 4th-ORDER FILTER 0.5V 4th-ORDER FILTER 0.5V 4th-ORDER FILTER 0.75V GNDO 19 GND 5 ×2 ×2 ×2 ROUT/YOUTC 18 TRANSCONDUCTANCE ERROR AMP + – GOUT/YOUTD 16 TRANSCONDUCTANCE ERROR AMP + – BOUT/COUT 15 TRANSCONDUCTANCE ERROR AMP A/B MUX + – 1 *CAN ALSO INPUT SYNC ON GREEN SIGNALS REV. 1.1 2/8/2001 ML6429 PIN CONFIGURATION ML6429 24-Pin SOIC (S24) A/B MUX CVINF/Y1 CVINUA/Y2 CVINUB/Y3 GND VCC RINA/Y4 RINB/Y5 GINA/Y6 GINB/Y7 BINA/C1 BINB/C2 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 SYNCOUT SYNCIN VCCOCV CVOUT1/YOUTA CVOUT2/YOUTB GNDO ROUT/YOUTC VCCORGB GOUT/YOUTD BOUT/COUT SWAP CVF SWAP CVU TOP VIEW PIN DESCRIPTION PIN NAME FUNCTION PIN NAME FUNCTION 1 A/B MU X Logic input pin to select between Bank or of the CV, RGB, or Y/C inputs. Internally pulled high. Filtered analog composite video or luma video input. 5 6 7 8 9 10 11 12 13 GND VCC RINA/Y4 RINB / Y5 GINA/Y6 GINB/Y7 BINA/C1 BINB/C2 SWAP CVU Analog ground Analog 5V supply Filtered analog RED video or luma video input for Bank Filtered analog RED video or luma video input for Bank Filtered analog GREEN video or luma video input for Bank Filtered analog GREEN video or luma video input for Bank Filtered analog BLUE video or chroma video input for Bank Filtered analog BLUE video or chroma video input for Bank 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. 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. 2 3 CVINF/Y1 CVINUA/Y2 Unfiltered analog composite video or luma video input for Bank . 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 . 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) 4 14 SWAP CVF 2 REV. 1.1 2/8/2001 ML6429 PIN DESCRIPTION PIN NAME FUNCTION PIN NAME FUNCTION 15 16 BOUT/COUT Analog BLUE video output or chroma output from either BINA/C1 or BINB/C2 GOUT/YOUTD Analog GREEN video output or luma output from either GINA/Y6 or GINB/ Y7 VCCORGB 5V power supply for output buffers of the RGB drivers 21 22 23 CVOUT1/YOUTA Composite video output for channel 1 or luma output. VCCOCV SYNCIN 5V power supply for output buffers of the CV drivers. Input for an external H-sync logic signal for CVU and RGB channels. TTL or CMOS. For normal operation, SYNCOUT is connected to SYNCIN. Logic output for H-sync detect for CVINUA/Y2 or CVINUB/Y3. TTL or CMOS. For normal operation, SYNCOUT is connected to SYNCIN. 17 18 19 20 ROUT/YOUTC Analog RED video output or luma output from either RINA/Y4 or RINB/Y5 GNDO Ground for output buffers 24 SYNCOUT CVOUT2/YOUTB Composite video output for channel 2 or luma output. REV. 1.1 2/8/2001 3 ML6429 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. VCC .................................................................................................. 6V Junction Temperature ............................................. 150°C ESD ..................................................................... >2000V Storage Temperature Range...................... –65°C to 150°C Lead Temperature (Soldering, 10 sec) ..................... 260°C Thermal Resistance (θJA) ...................................... 80°C/W OPERATING CONDITIONS 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 ICC AV VSYNC PARAMETER Supply Current Low Frequency Gain (All Channels) CONDITIONS No Load (VCC = 5V) VIN = 100mVP-P at 300kHz 5.34 0.7 1.2 0.8 MIN TYP 90 6.0 0.9 1.4 1.0 10 4.5 6.8 7.1 1.5 –35 –41 6.65 1.1 1.5 1.2 MAX UNITS mA dB V V V ms MHz MHz dB dB Channel Sync Output Level CV/Y, R/Y, G/Y Sync Present and Clamp Settled B/C Unfiltered Sync Present and Clamp Settled Sync Present and Clamp Settled Settled to Within 10mV, CIN=0.1µF All Outputs All Outputs (with no Peaking Cap. See Figures 1 and 12) All Outputs t CLAMP f 0.5dB fC 0.8fC fSB Clamp Response Time 0.5dB Bandwidth (Flatness. All Filtered Channels) –3dB Bandwidth (Flatness. All Filtered Channels) 0.8 x fC Attenuation, All Filtered Channels Stopband Rejection All Filtered Channels fIN = 27MHz to 100MHz worst case (See Figures 2 and 13) Vi NOISE OS ISC CL dG dΦ THD XTALK Input Signal Dynamic Range (All Channels) AC Coupled Output Noise (All Channels) Peak Overshoot (All Channels) Over a Frequency Band of 25Hz-50MHz 2VP-P Output Pulse 1.25 1.35 1 4.3 120 35 0.4 0.4 0.4 –55 VP-P mVRMS % mA pF % º % dB Output Short Circuit Current (All Channels) Note 2 Output Shunt Capacitance (All Channels) Differential Gain (All Channels) Differential Phase (All Channels) Output Distortion (All Channels) Crosstalk Load at the Output Pin All Outputs All Outputs VOUT = 1.8VP-P at 3.58/4.43MHz Input of .5VP-P at 3.58/4.43MHz on any channel to output of any other channel Input A/B MUX Crosstalk Swap Mux Crosstalk Input of 0.5VP-P at 3.58/4.43MHz Input of 0.5VP-P at 3.58/4.43MHz –54 –52 dB dB 4 REV. 1.1 2/8/2001 ML6429 ELECTRICAL CHARACTERISTICS SYMBOL PSRR t pd ∆tpd PARAMETER PSRR (All Channels) Group Delay (All Channels) Group Delay Deviation from Flatness (See Figures 3 and 14) (All Channels) V IH VIL Note 1: Note 2: (Continued) CONDITIONS 0.5VP-P (100kHz) at VCC at 100kHz to 3.58MHz (NTSC) to 4.43MHz (PAL) to 10MHz A/B MUX, SWAP CVU, SWAP CVF A/B MUX, SWAP CVU, SWAP CVF 2.5 1 MIN TYP –39 60 4 7 12 MAX UNITS dB ns ns ns ns V V Input Voltage Logic High Input Voltage Logic Low Sustained short circuit protection limited to 10 seconds. Limits are guaranteed by 100% testing, sampling, or correlation with worst case test conditions. REV. 1.1 2/8/2001 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. 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 of video inputs (CVINUA/Y2, RINA/Y4, GINA/Y6, BINA/C1) to be enabled. If A/B MUX is logic low, then Bank 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. 6 REV. 1.1 2/8/2001 ML6429 1 20 0 0 AMPLITUDE (dB) –1 AMPLITUDE (dB) 0 0.1 1 10 –20 –2 –40 –3 –60 –4 –80 0.01 0.1 1 FREQUENCY (MHz) 10 100 FREQUENCY (MHz) Figure 1. Passband Flatness (Normalized) All outputs. Passband is ripple-free. 90 Figure 2. Passband/Stopband Rejection Ratios (Normalized) All outputs. 70 DELAY (ns) 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 0 0 0 0 1 1 1 1 INPUTS SWAP CVF 0 0 1 1 0 0 1 1 OUTPUTS ROUT/YOUTC RINB/Y5 RINB/Y5 RINB/Y5 RINB/Y5 RINA/Y4 RINA/Y4 RINA/Y4 RINA/Y4 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 GOUT/YOUTD GINB/Y7 GINB/Y7 GINB/Y7 GINB/Y7 GINA/Y6 GINA/Y6 GINA/Y6 GINA/Y6 BOUT/COUT 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 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. 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 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). 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/B 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 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. 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. 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. 8 REV. 1.1 2/8/2001 ML6429 2 3 4 7 8 9 10 11 12 19 GNDO CVINF/Y1 CVINUA/Y2 CVINUB/Y3 RINA/Y4 RINB/Y5 GINA/Y6 GINB/Y7 BINA/C1 BINB/C2 SYNCIN 23 5 GND 17 VCCORGB 22 VCCOCV 6 VCC CVOUT1/YOUTA 21 220µF 75Ω VIDEO CABLES CV/Y MODULATOR 220µF CVOUT2/YOUTB ML6429 ROUT/YOUTC GOUT/YOUTD BOUT/COUT SYNCOUT 24 A/B MUX 1 SWAP CVU SWAP CVF 13 14 220µF 18 220µF 16 220µF 15 75Ω CV/Y 20 75Ω MODULATOR R/Y 75Ω G/Y 75Ω B/C OPTIONAL FOR DC COUPLED APPLICATIONS H SYNC OUT INPUTS Bank A: Bank B: Other: RGB, CV filtered path RGB, CV filtered path 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) 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 CVINUA/Y2 CVINUB/Y3 RINA/Y4 RINB/Y5 GINA/Y6 GINB/Y7 BINA/C1 BINB/C2 SYNCIN 23 5 GND 17 VCCORGB 22 VCCOCV 6 VCC CVOUT1/YOUTA 21 COMPOSITE VIDEO OUT CVOUT2/YOUTB ML6429 ROUT/YOUTC GOUT/YOUTD BOUT/COUT SYNCOUT 24 A/B MUX 1 SWAP CVU SWAP CVF 13 14 H SYNC OUT 18 LUMA OUT S-VIDEO OUT CHROMA OUT TO EVC CONNECTOR 20 16 15 Figure 5. EVC (Enhanced Video Connector) Application: S-Video, Composite, plus H-Sync out REV. 1.1 2/8/2001 9 ML6429 19 GNDO CVINF/Y1 CVINUA/Y2 CVINUB/Y3 RINA/Y4 RINB/Y5 GINA/Y6 GINB/Y7 BINA/C1 BINB/C2 5 GND 17 VCCORGB 22 VCCOCV 6 VCC CVOUT1/YOUTA 2 COMPOSITE VIDEO IN 3 4 LUMA IN 7 8 9 10 CHROMA IN 11 12 21 COMPOSITE VIDEO OUT CVOUT2/YOUTB ML6429 20 ROUT/YOUTC GOUT/YOUTD BOUT/COUT 18 LUMA OUT S-VIDEO OUT CHROMA OUT 16 15 SYNCIN 23 SYNCOUT 24 A/B MUX 1 SWAP CVU SWAP CVF 13 14 H SYNC OUT TO SCART CONNECTOR 24 SYNC OUT CVINF/Y1 CVINUA/Y2 CVINUB/Y3 RINA/Y4 RINB/Y5 GINA/Y6 GINB/Y7 BINA/C1 BINB/C2 23 SYNC IN 17 VCCORGB 22 VCCOCV 6 VCC CVOUT1/YOUTA 2 3 4 R INPUT 7 8 RGB INPUT G INPUT 9 10 B INPUT 11 12 21 CVOUT2/YOUTB ML6429SLAVE 20 ROUT/YOUTC GOUT/YOUTD BOUT/COUT 18 R OUTPUT G OUTPUT B OUTPUT RGB VIDEO OUT 16 15 GNDO 19 GND 5 A/B MUX 1 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 VCR 1kΩ VIDEO RECORDER CV R G MODULATOR B G R DIGITAL PLAYER OR MPEG-2 DECODER 1kΩ B 0.1µF 19 GNDO CV1 2 COMPOSITE VIDEO IN 0.1µF 0.1µF Y 0.1µF 0.1µF U 0.1µF 9 0.1µF V 0.1µF 0.1µF B R 10 11 12 G CV2 3 CV3 4 7 8 CVINF/Y1 CVINUA/Y2 CVINUB/Y3 RINA/Y4 RINB/Y5 GINA/Y6 GINB/Y7 BINA/C1 BINB/C2 ROUT/YOUTC GOUT/YOUTD BOUT/COUT 18 ROUT MODULATOR GOUT TV BOUT TV ML6429 220µF CVOUT2/YOUTB 5 GND 17 VCCORGB 22 VCCOCV 6 VCC CVOUT1/YOUTA 220µF 21 CVOUT1 20 COMPOSITE VIDEO OUT, CVOUT2 16 15 SYNCIN 23 SYNCOUT 24 A/B MUX 1 SWAP CVU SWAP CVF 13 14 A/B MUX 0 1 INPUTS SWAP CVU 0 0 SWAP CVF 0 1 CVOUT1 Digital Player Digital Player OUTPUTS CVOUT2 VCR Digital Player ROUT VCR Digital Player GOUT VCR Digital Player BOUT VCR Digital Player Figure 7. Multi-Source CV and RGB Channels REV. 1.1 2/8/2001 11 ML6429 UNFILTERED R OSD (ON-SCREEN DISPLAY) PROCESSOR G B 80ns±10ns DELAY FILTERED ROUTPUT GOUTPUT BOUTPUT ML6429 SCART/QUAD VIDEO FILTER AND DRIVER TO MUX OR OTHER PROCESSING FAST BLANKING INTERVAL OR ALPHA-KEY SIGNAL ML6431 GENLOCK/CLOCK GENERATOR 13.5MHz/ 27MHz D Q Standard 74XX D'FF FAST BLANKING INTERVAL OR ALPHA-KEY SIGNAL 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 CVINUA/Y2 CVINFB/Y3 RINA/Y4 RINB/Y5 GINA/Y6 GINB/Y7 BINA/C1 BINB/C2 SYNCIN 23 5 GND 17 VCCORGB 22 VCCOCV 6 VCC CVOUT1/YOUTA 21 220µF 75Ω VIDEO CABLES CV/Y 330pF MODULATOR 220µF CVOUT2/YOUTB ML6429 ROUT/YOUTC GOUT/YOUTD BOUT/COUT SYNCOUT 24 A/B MUX 1 SWAP CVF SWAP CVU 13 14 220µF 18 220µF 16 220µF 15 75Ω CV/Y 20 330pF 75Ω MODULATOR R/Y 75Ω G/Y 75Ω B/C NOT REQUIRED FOR DC COUPLED APPLICATIONS H SYNC OUT INPUTS Bank A: Bank B: Other: RGB, CV filtered path RGB, CV filtered path 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) Figure 9. Basic Application for PAL 12 REV. 1.1 2/8/2001 ML6429 –0.5 0 0.5 1dB WITHOUT PEAKING 0 1 2 3 4 5 6 7 8 9 10 0.2dB WITH PEAKING AMPLITUDE (dB) 1 1.5 2 2.5 3 0 1 2 3 4 5 6 7 8 9 10 FREQUENCY (MHz) 300pF 270pF 220pF 0pF Figure 10. NTSC/PAL Video Frequency Response With and Without Peaking Capacitor 0 –10 AMPLITUDE (dB) NTSC/PAL –34dB WITH PEAKING –20 –30 300pF NTSC/PAL –40dB WITHOUT PEAKING –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 0 DELAY (ns) 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 5V GND C12 1µF FB1 VCCA FB2 C10 1µF 220µF R24 75Ω CVOUT1 MOVABLE JUMPER 1 JPx PERMANENT SHORT 3 2 C13 0.1µF VCCO C11 0.1µF CVIN1 C14 R1 75Ω C15 R2 75Ω C16 R3 75Ω C17 0.1µF 6 17 22 19 5 X2 21 C2 220µF R23 75Ω C33 330pF CVOUT2 YOUT1 U2 0.1µF 2 FOURTH ORDER FILTER MUX FOURTH ORDER FILTER FOURTH ORDER FILTER FOURTH ORDER FILTER 14 13 MUX X2 CVIN2 20 C3 220µF YIN1 0.1µF 0.1µF 0.1µF 3 4 7 8 R22 75Ω C34 330pF CVOUT2 YOUT1 YIN2 C18 R4 75Ω MUX X2 18 C4 16 220µF R21 75Ω YOUT2 9 10 P2—EVC 13 14 15 MUX X2 CIN1 C19 0.1µF 11 12 MUX X2 24 23 15 C5 220µF R20 75Ω COUT1 5 4 C20 JP5 32 1 JP2 1 23 R5 75Ω R6 1kΩ JP1 1 GND 2 3 0.1µF SW1-C 1 SW1-A SW1-B 5V 5 9 13 17 21 3 19 16 7 11 15 JP3 1 1 14 13 24 23 JP4 21 C6 220µF 1 2 3 2 HSYNCIN U2 C21 R7 1kΩ 1 R8 1kΩ JP6 2 BIN R10 1kΩ C25 GIN R11 75Ω C26 0.1µF 0.1µF 3 R9 1kΩ C23 C24 0.1µF 0.1µF 7 8 MUX FOURTH ORDER FILTER FOURTH ORDER FILTER FOURTH ORDER FILTER 17 1µF 0.1µF C31 C32 VCCO X2 C22 0.1µF 3 4 MUX 0.1µF 2 FOURTH ORDER FILTER X2 MUX X2 20 R17 75Ω CVOUT+ Y+ P1—SCART 18 C7 220µF R16 75Ω BOUT 9 10 MUX X2 16 C8 220µF R15 75Ω GOUT 11 12 MUX 6 X2 22 0.1µF 0.1µF 19 5 15 C9 220µF R14 75Ω ROUT RIN C27 R12 75Ω C28 R13 75Ω 0.1µF C29 C30 VCCA CIN2 0.1µF 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 0.090 - 0.094 (2.28 - 2.39) 0.012 - 0.020 (0.30 - 0.51) 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 ML6429CS-1 TEMPERATURE RANGE 0°C to 70°C PACKAGE 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 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 REV. 1.1 2/8/2001 15