19-2750; Rev 0; 1/03 6-Channel Integrated Video Reconstruction Filters Applications STB PVR DVDs SCART Video Applications Hard Disk Recorders General Video Filtering Features ♦ Replace 30 or More Discrete Components ♦ Ideal for CVBS, Y/C (S-Video), and RGB or Y Pb Pr Applications ♦ 45dB Attenuation at 27MHz ♦ -0.2dB Passband Response ♦ Ideal for STBs with SCART Interface ♦ +5V Single-Supply Voltage ♦ Input Common-Mode Range Includes GND ♦ DC-Coupled Input, DC/AC-Coupled Output ♦ 14-Pin SO Package Ordering Information MAX7440ESD -40°C to +85°C 14 SO HIGHFREQUENCY BOOST No MAX7441ESD -40°C to +85°C 14 SO Yes PART TEMP RANGE PINPACKAGE MAX7442ESD* -40°C to +85°C 14 SO *Future product—contact factory for availability. Yes Typical Application Circuit +5V 0.1µF 1µF ENCODER D/A D/A D/A D/A D/A D/A A/V SWITCHING DEVICE (MAX4399) OR BUFFERS MAX7440 MAX7441 MAX7442 IN1 LOWPASS FILTER WITH HF BOOST* A = +1V/V LOWPASS FILTER A = +1V/V LOWPASS FILTER A = +1V/V LOWPASS FILTER A = +1V/V IN5 LOWPASS FILTER WITH HF BOOST* A = +1V/V IN6 LOWPASS FILTER WITH HF BOOST* A = +1V/V IN2 IN3 IN4 OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 75Ω 75Ω 75Ω 75Ω 75Ω 75Ω 75Ω 75Ω 75Ω 75Ω 75Ω 75Ω *MAX7440 HAS FLAT RESPONSE, MAX7441/MAX7442 INCLUDES HF BOOST. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX7440/MAX7441/MAX7442 General Description The MAX7440/MAX7441/MAX7442 six-channel video reconstruction filters replace 30 or more discrete components. The devices are ideal for digital-to-analog converter (DAC) video reconstruction applications, when analog video is reconstructed from a digital data stream. The MAX7440/MAX7441/MAX7442 operate from a single +5V power supply. The inputs are DCcoupled from the DAC and the output can either be ACor DC-coupled. The DC-IN, DC-OUT architecture, leads to a perfect line-time distortion performance (zero tilt). The filters have a cutoff frequency optimized for PAL, NTSC, and SDTV video applications and offer three high-frequency boost options. The MAX7440 offers a flat passband response on all six channels; the MAX7441/MAX7442 offer high-frequency boost on the three channels used for CVBS and Y/C. The MAX7440/ MAX7441/MAX7442 are available in a 14-pin SO package and are fully specified over the extended temperature range. MAX7440/MAX7441/MAX7442 6-Channel Integrated Video Reconstruction Filters ABSOLUTE MAXIMUM RATINGS VCC to GND ...........................................................................+6V All Other Pins to GND.................................-0.3V to (VCC + 0.3V) Maximum Current into Any Pin .........................................±50mA Continuous Power Dissipation (TA = +70°C) 14-Pin SO (derate 8.3mW/°C above +70°C)..............666.7mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Junction Temperature ......................................................+150°C Lead Temperature (soldering, 10s) .................................+300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (VCC = +5V ±5%, RL = 5kΩ, CL = 0 to 20pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS DC to 3.5MHz, MAX7440/MAX7441 (channels 2, 3, 4) MIN TYP MAX -0.40 -0.2 +0.10 dB Passband Response DC to 5MHz, MAX7440/MAX7441 (channels 2, 3, 4) Stopband Attenuation UNITS Asb f = 27MHz +1dB HF boost, MAX7441 Boost Amplitude -0.80 -0.5 37 45 0.4 0.60 0 dB 0.91 f = 4.5MHz dB +2dB HF boost, MAX7442 1.2 Differential Gain dG 5-step modulated staircase 0.05 % Differential Phase dB 5-step modulated staircase 0.05 Degrees 71 dB Signal-to-Noise Ratio Group Delay Matching Group Delay Deviation SNR tg(MATCH) ∆g Peak signal (1VP-P) to RMS noise, f = 10Hz to 100MHz Low-frequency channel-to-channel matching, f = 200kHz Deviation from 100kHz to 4.5MHz Channels 2, 3, 4 2 Channels 1, 5, 6 2 MAX7440/MAX7441/ MAX7442 10 MAX7441 (channels 1, 5, 6) 17 MAX7442 (channels 1, 5, 6) 17 ns Line-Time Distortion Hdist 18µs, 100IRE bar -3 +3 mV Field-Time Distortion Vdist 130 lines, 18µs, 100IRE bar -4 +4 mV -0.25 +0.25 dB Low-Frequency Gain Variation AV Gain at f = 100kHz tg f = 100kHz Low-Frequency Gain Low-Frequency Gain Matching 0.975 Input Voltage Range Channel-to-Channel Crosstalk Input Leakage Current 2 0 ns XTALK IIN +3 % 0 1.75 V Channel-to-channel crosstalk, DC to 5MHz VIN = 0V V/V -3 71 2 6 _______________________________________________________________________________________ dB 25 µA 6-Channel Integrated Video Reconstruction Filters (VCC = +5V ±5%, RL = 5kΩ, CL = 0 to 20pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS MIN Input Resistance TYP MAX UNITS 200 Input Capacitance kΩ 20 Supply Voltage Range VCC Supply Current ICC Power-Supply Rejection Ratio pF 4.75 VCC = +5.5V, no load PSRR VIN = 100mVP-P DC Level Shift 5.25 V 78 mA 57 DC 39 f = 0 to 1MHz 30 OUT_ to IN_ dB 0.85 1.05 V Typical Operating Characteristics (VCC = +5V, RL = 5kΩ, TA = +25°C, unless otherwise noted.) PASSBAND AMPLITUDE vs. FREQUENCY -10 0 -40 PHASE (DEGREES) AMPLITUDE (dB) -30 -2 -4 -6 -50 50 0 -50 -100 -60 -8 -70 -10 0.1 1 10 100 -150 -200 0.1 1 10 0.1 1 10 FREQUENCY (MHz) FREQUENCY (MHz) FREQUENCY (MHz) GROUP DELAY vs. FREQUENCY 2T RESPONSE (1IRE = 7.14mV) MODULATED 12.5T RESPONSE (1IRE = 7.14mV) MAX7441 (CHANNELS 2, 3, 4) 70 MAX7440 toc06 MAX7440 toc05 MAX7440toc04 80 GROUP DELAY (ns) 150 100 -20 AMPLITUDE (dB) PHASE RESPONSE vs. FREQUENCY 200 MAX7440 toc02 MAX7440 toc01 2 MAX7440 toc03 AMPLITUDE vs. FREQUENCY 0 IN_ 200mV/div IN_ 200mV/div OUT_ 200mV/div OUT_ 200mV/div 60 50 40 0.1 1 10 200ns/div 400ns/div FREQUENCY (MHz) _______________________________________________________________________________________ 3 MAX7440/MAX7441/MAX7442 ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (continued) (VCC = +5V, RL = 5kΩ, TA = +25°C, unless otherwise noted.) SUPPLY CURRENT vs. TEMPERATURE 2 3 4 6 5 7 DIFFERENTIAL PHASE 54 52 50 -40 -15 10 35 60 85 MAX7440 toc09 MAX7440 toc08 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 1 56 4.5 4.0 SIGNAL SWING (VP-P) DIFFERENTIAL GAIN (%) 58 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 DIFFERENTIAL PHASE (DEGREES) MAX7440 toc07 60 SUPPLY CURRENT (mA) SIGNAL SWING vs. LOAD DIFFERENTIAL GAIN 62 3.5 3.0 2.5 2.0 1.5 1.0 0.5 1 2 3 4 6 5 200 7 1000 TEMPERATURE (°C) 4200 5000 30 20 10 1.9 2.0 2.1 2.2 2.3 2.4 2.5 GROUP DELAY (ns) FREQUENCY (MHz) 830 750 1.8 10 870 790 0 -90 910 LEVEL SHIFT (mV) -80 40 MAX7440 toc12 20 SAMPLES PERCENTAGE OF UNITS (%) -75 -85 -40 -15 10 35 TEMPERATURE (°C) MULTIBURST RESPONSE MAX7440 toc13 OUT_ 200mV/div 10µs/div 4 3400 950 MAX7440 toc11 50 MAX7440toc10 -70 1 2600 INPUT/OUTPUT LEVEL SHIFT vs. TEMPERATURE GROUP DELAY MATCHING DISTRIBUTION -65 0.1 1800 LOAD (Ω) CHANNEL-TO-CHANNEL CROSSTALK vs. FREQUENCY AMPLITUDE (dB) MAX7440/MAX7441/MAX7442 6-Channel Integrated Video Reconstruction Filters _______________________________________________________________________________________ 60 85 6-Channel Integrated Video Reconstruction Filters PIN NAME 1 IN1 Channel 1 Filter Input (Optional Boosted Channel) FUNCTION 2 IN2 Channel 2 Filter Input 3 IN3 Channel 3 Filter Input 4 VCC +5V Power Supply. Bypass to GND with a 0.1µF and 1µF capacitor. 5 IN4 Channel 4 Filter Input 6 IN5 Channel 5 Filter Input (Optional Boosted Channel) 7 IN6 Channel 6 Filter Input (Optional Boosted Channel) 8 OUT6 Channel 6 Filter Output 9 OUT5 Channel 5 Filter Output 10 OUT4 Channel 4 Filter Output 11 GND Ground 12 OUT3 Channel 3 Filter Output 13 OUT2 Channel 2 Filter Output 14 OUT1 Channel 1 Filter Output Detailed Description The MAX7440/MAX7441/MAX7442 filter the outputs of DAC encoder chipsets that process digital video information in applications such as set-top boxes, hard disk recorders, DVD players, DVD recorders, and digital VCRs. These devices also filter and clean up analog video signals by rejecting out-of-band noise. Each channel in the MAX7440/MAX7441/MAX7442 includes a 4th-order lowpass filter and a gain of +1V/V output stage, as shown in the Typical Application Circuit. Filter Filter Response Each channel of the reconstruction filter consists of a 4th-order Sallen-Key filter configured as two 2nd-order stages. The filter features a maximally flat passband for NTSC, PAL, and SDTV bandwidths. The stopband offers typically 45dB of attenuation at sampling frequencies of 27MHz and above (see Typical Operating Characteristics). The filter exhibits a Butterworth-type response resulting in excellent group delay deviation performance. High-Frequency Boost The high-frequency (HF) boost compensates for signal degradation and rolloff in the signal path prior to the filter. This performance increases the image sharpness. The MAX7441/MAX7442 offer a high-frequency boost on channels OUT1, OUT5, and OUT6. Output Stage The output stages of the MAX7440/MAX7441/MAX7442 are designed to drive 1VP-P signals into high-impedance (>5kΩ) loads. They require external buffers to drive standard video cables. Most standard audio/ video switching devices include these buffers for STB applications. Applications Information MAX7440/MAX7441/MAX7442 with an A/V Switching Device The MAX7440/MAX7441/MAX7442 are designed to directly interface to an audio/video switching device used in video applications (i.e., STBs) with SCART interfaces (see Typical Application Circuit). The output of the analog filters can drive the high-impedance load of the switching device. The switching device provides the buffering to drive standard 150Ω video loads. MAX7440/MAX7441/MAX7442 with External Buffers External buffering is required for the MAX7440/ MAX7441/MAX7442 to drive standard 150Ω video loads. Figure 1 shows the MAX4394 triple op amp, configured with a gain of +2V/V to drive standard video loads from the MAX7440/MAX7441/MAX7442. _______________________________________________________________________________________ 5 MAX7440/MAX7441/MAX7442 Pin Description MAX7440/MAX7441/MAX7442 6-Channel Integrated Video Reconstruction Filters VCC +5V 0.1µF 1µF ENCODER MAX7440 MAX7441 MAX7442 IN1 D/A LOWPASS FILTER DISABLE A = +1V/V OUT1 IN 75Ω ZO = 75Ω MAX4394 OUT1 75Ω 510Ω 510Ω DISABLE IN6 D/A LOWPASS FILTER A = +1V/V OUT6 IN 75Ω MAX4394 ZO = 75Ω OUT6 75Ω 510Ω 510Ω Figure 1. Typical Application Circuit with External Buffers Pin Configuration TOP VIEW IN1 1 14 OUT1 IN2 2 13 OUT2 IN3 3 12 OUT3 VCC 4 IN4 5 MAX7440 MAX7441 MAX7442 10 OUT4 IN5 6 9 OUT5 IN6 7 8 OUT6 SO 6 11 GND Power-Supply Bypassing and Layout The MAX7440/MAX7441/MAX7442 operate from a single +5V supply. Bypass VCC to GND with a 0.1µF and 1µF capacitor. These capacitors filter all frequencies over 1MHz. Place all external components as close to the devices as possible. To maintain good crosstalk performance ensure that input and output lines do not run parallel for any distance. If it is necessary to have parallel lines, run a ground trace in between each line. Refer to the MAX7440 Evaluation Kit for a proven PC board layout example. Chip Information TRANSISTOR COUNT: 3691 PROCESS: BiCMOS _______________________________________________________________________________________ 6-Channel Integrated Video Reconstruction Filters N E H INCHES MILLIMETERS MAX MIN 0.069 0.053 0.010 0.004 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.016 0.050 MAX MIN 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 1.27 BSC 3.80 4.00 5.80 6.20 0.40 SOICN .EPS DIM A A1 B C e E H L 1.27 VARIATIONS: 1 INCHES TOP VIEW DIM D D D MIN 0.189 0.337 0.386 MAX 0.197 0.344 0.394 MILLIMETERS MIN 4.80 8.55 9.80 MAX 5.00 8.75 10.00 N MS012 8 AA 14 AB 16 AC D A B e C 0 -8 A1 L FRONT VIEW SIDE VIEW PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, .150" SOIC APPROVAL DOCUMENT CONTROL NO. 21-0041 REV. B 1 1 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 7 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. MAX7440/MAX7441/MAX7442 Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.)