August 1999 PRELIMINARY ML6429 75W 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, 75W 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 150W 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 1 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) ML6429 PIN DESCRIPTION PIN NAME FUNCTION 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. 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 (qJA) ...................................... 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 MIN TYP MAX ICC Supply Current No Load (VCC = 5V) AV Low Frequency Gain (All Channels) VIN = 100mVP-P at 300kHz 5.34 6.0 6.65 dB Channel Sync Output Level CV/Y, R/Y, G/Y Sync Present and Clamp Settled 0.6 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 0.7 1.0 1.2 V VSYNC 90 UNITS mA 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. 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 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 % dF 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 6.7 See Figures 1 and 12) 35 pF 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 Dtpd 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. 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 150W video loads, with up to 35pF of load capacitance at the output pin. Likewise, they are capable of driving a 75W 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 75W 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 150W load at 2VP-P or 1VP-P into a 75W 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. 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 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 (75W 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 75W 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 75W 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 150W 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. 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 CV/Y 20 MODULATOR ML6429 GINA/Y6 ROUT/YOUTC GINB/Y7 GOUT/YOUTD BINA/C1 BINB/C2 SYNCIN 23 75Ω BOUT/COUT 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 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 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 TO SCART CONNECTOR 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 V R 10 0.1µF 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 11 ML6429 80ns±10ns DELAY UNFILTERED 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 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 2.5 220pF 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 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 CVOUT2 YOUT1 330pF 18 C4 220µF R21 75Ω YOUT2 16 P2—EVC 13 14 15 C5 220µF 15 R20 75Ω COUT1 SW1-C 5 4 SW1-A 23 5V SW1-B 5 13 17 JP3 21 2 3 1 1 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 16 2 7 3 11 20 C6 220µF R17 75Ω C7 220µF R16 75Ω C8 220µF R15 75Ω C9 220µF R14 75Ω CVOUT+ Y+ R9 1kΩ BIN C24 0.1µF C25 0.1µF C26 0.1µF R10 1kΩ GIN R11 75Ω 6 C27 RIN R13 75Ω 22 18 16 15 19 5 0.1µF R12 75Ω C28 17 0.1µF C29 1µF C30 0.1µF VCCA C31 0.1µF C32 0.1µF 19 15 X2 MUX 1 21 MUX 3 4 2 JP4 U2 VCCO Figure 13. Schematic 14 R22 75Ω C34 X2 GND 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 BOUT GOUT ROUT P1—SCART 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) Micro Linear Corporation 2092 Concourse Drive San Jose, CA 95131 Tel: (408) 433-5200 Fax: (408) 432-0295 www.microlinear.com © Micro Linear 1999. respective owners. is a registered trademark of Micro Linear Corporation. All other trademarks are the property of their 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. 15 DS6429-01