19-0604; Rev 1; 2/09 KIT ATION EVALU E L B AVAILA CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support The MAX9513 CVBS video filter amplifier with SmartSleep and bidirectional video support is ideal for portable DVD players and portable media players (PMPs). The input can be directly connected to the digital-to-analog converter (DAC) output. The reconstruction filter removes high-frequency signals above 6.75MHz. The amplifiers have 6dB of gain, and the outputs can be DC-coupled to a load of 75Ω, which is equivalent to two video loads, or can be AC-coupled to a load of 150Ω. The SmartSleep circuitry intelligently reduces power consumption based on the presence of the input signal and the output loads. When the MAX9513 does not detect the presence of sync on the input video signal, the supply current is reduced to less than 7µA. The device only enables a video amplifier when there is an active video input signal and an attached load. The video amplifier remains on while a load is connected. If the load is disconnected, the video amplifier is turned off. The MAX9513 contains one reconstruction filter, two video amplifiers, and a pulldown switch at one of the two CVBS outputs. The MAX9513 has the ability to control the bidirectional video signals at the CVBS video connections without the need for separate switches or relays. This feature is particularly useful for portable DVD players, which often use the same connector to drive a composite video output and to accept an external video signal to display on the LCD panel. The MAX9513 operates from a 2.7V to 3.6V single supply and is offered in a small 16-pin TQFN (3mm x 3mm) package. The device is specified over the -40°C to +125°C automotive temperature range. Features ♦ SmartSleep Feature Detects Input Signal and Output Load Status to Reduce Power Consumption ♦ Standard-Definition Video Reconstruction Filter with 6.75MHz Passband ♦ Two Composite Inputs and Outputs ♦ Integrated Support for a Bidirectional Composite Video Signal ♦ Supports Two Video Loads at Each Output (DC-Coupled) ♦ 2.7V to 3.6V Single-Supply Operation Ordering Information PART MAX9513ATE+ PIN-PACKAGE TOP MARK 16 TQFN-EP* (3mm x 3mm) AFC Note: The device is specified over the -40°C to +125°C operating temperature range. +Denotes lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. Block Diagrams INT/EXT MAX9513 Applications SMARTSLEEP CONTROL LOGIC SHDN Portable DVD Players LOAD SENSE Portable Set-Top Boxes ACTIVE VIDEO DETECT Personal Video Recorders (PVRs) CVBSOUT1 6dB Portable Media Players (PMPs) Portable Video CVBSIN BUFFER LPF EXTCVBSIN CLAMP LOAD SENSE 6dB CVBSOUT2 Block Diagrams continued at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX9513 General Description MAX9513 CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support ABSOLUTE MAXIMUM RATINGS (Voltages with respect to GND.) VDD ..........................................................................-0.3V to +4V SMARTSLEEP, SHDN, INT/EXT, CVBSIN, EXTCVBSIN ..........................................-0.3V to +4V Duration of Short Circuit to VDD or GND (CVBSOUT1, CVBSOUT2)................Continuous Continuous Input Current EXTCVBSIN, CVBSIN, SMARTSLEEP, SHDN, INT/EXT ....................................±20mA Continuous Power Dissipation (TA = +70°C) 16-Pin TQFN (derate 15.6mW/°C above +70°C)..........1250mW Operating Temperature Range .........................-40°C to +125°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +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 (VDD = VSHDN = 3.3V, VSMARTSLEEP = VINT/EXT = VGND = 0V, RL = no load. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL Supply Voltage Range Supply Current Shutdown Supply Current VDD IDD ISHDN CONDITIONS Guaranteed by PSRR MIN TYP 2.7 MAX UNITS 3.6 V INT/EXT = GND, VCVBSIN = 0.3V 13 16 INT/EXT = VDD, EXTCVBSIN is unconnected 4.3 6 SMARTSLEEP = VDD, CVBSIN has no active video signal 7 14 SMARTSLEEP = VDD, CVBSIN has a blackburst video signal with sync tip at GND (Note 2) 17 mA µA SHDN = GND 0.01 10 µA 5.2 % VDD 200 Ω SMARTSLEEP CHARACTERISTICS Minimum Line Frequency CVBSIN 14.3 Sync Slice Level CVBSIN 4.1 Output Load Detect Threshold Sync pulse present, RL to GND kHz DC CHARACTERISTICS Input Voltage Range VIN CVBSIN, guaranteed by output voltage swing 2.7V < VDD < 3.6V 0 1.05 3.0V < VDD < 3.6V 0 1.2 V Input Current IIN VCVBSIN = 0V 2 Input Resistance RIN CVBSIN 20 2 _______________________________________________________________________________________ 5 µA MΩ CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support (VDD = VSHDN = 3.3V, VSMARTSLEEP = VINT/EXT = VGND = 0V, RL = no load. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Sync-Tip Clamp Level SYMBOL VCLP CONDITIONS MIN EXTCVBSIN 0.25 Input Clamping Current EXTCVBSIN = 500mV + VCLP 0.5 EXTCVBSIN Input Voltage Range Guaranteed by output voltage swing Output Resistance 2 % Ω 300 RL = 150Ω to VDD / 2, 0V ≤ VIN ≤ 1.05V, VDD = 2.7V 5.7 6 6.3 dB RL = 150Ω to VDD / 2, 0V ≤ VIN ≤ 1.05V, VDD = 2.7V -0.2 0 +0.2 dB VCVBSIN = 0V, INT/EXT = GND, RL = 150Ω to GND 0.21 0.3 0.38 CEXTCVBSIN = 0.1µF to GND, INT/EXT = VDD, RL = 150Ω to GND 0.21 0.27 0.38 TA = -40°C to +85°C 2.027 2.1 2.163 TA = -40°C to +125°C 2.006 Measured at output, VDD = 2.7V, 0V ≤ VIN ≤ 1.05V, RL = 150Ω to VDD / 2 2.027 2.1 2.163 TA = -40°C to +85°C 2.316 2.4 2.472 TA = -40°C to +125°C 2.292 Measured at output, VDD = 3V, 0V ≤ VIN ≤ 1.2V, RL = 150Ω to -0.2V ROUT µA VP-P Measured at output, VDD = 2.7V, 0V ≤ VIN ≤ 1.05V, RL = 150Ω to -0.2V Output Voltage Swing 1.5 1.2 EXTCVBSIN Output Level V 3.0V < VDD < 3.6V Maximum Input Source Resistance DC Gain Matching UNITS 0.37 1.05 Sync Crush AV 1 MAX 2.7V < VDD < 3.6V EXTCVBSIN, percentage reduction in sync pulse (0.3VP-P), guaranteed by input clamping current measurement, measured at input DC Voltage Gain TYP V 2.163 2.472 Measured at output, VDD = 3V, 0V ≤ VIN ≤ 1.2V, RL = 150Ω to VDD / 2 2.316 2.4 2.472 Measured at output, VDD = 3.135V, 0V ≤ VIN ≤ 1.05V, RL = 75Ω to -0.2V 2.027 2.1 2.163 VOUT = 1.3V, -5mA ≤ ILOAD ≤ +5mA VP-P 0.47 Ω _______________________________________________________________________________________ 3 MAX9513 ELECTRICAL CHARACTERISTICS (continued) MAX9513 CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support ELECTRICAL CHARACTERISTICS (continued) (VDD = VSHDN = 3.3V, VSMARTSLEEP = VINT/EXT = VGND = 0V, RL = no load. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL Power-Supply Rejection Ratio Output Pulldown Resistance PSRR RPD CONDITIONS 2.7V ≤ VDD ≤ 3.6V, input referred, RL = 150Ω to GND MIN TYP MAX 48 UNITS dB INT/EXT = VDD, CVBSOUT1 Output Shutdown Impedance 3.7 Ω 28 kΩ LOGIC INPUTS (SMARTSLEEP, SHDN, INT/EXT) Logic-Low Threshold VIL Logic-High Threshold VIH Logic Input Current IIL / IIH 0.3 x VDD 0.7 x VDD VI = 0V or VDD V V 0.01 10 µA AC ELECTRICAL CHARACTERISTICS (VDD = VSHDN = 3.3V, VSMARTSLEEP = VINT/EXT = VGND = 0V, RL = 150Ω to GND. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN f = 5.5MHz Standard-Definition Reconstruction Filter Inputs are 1VP-P, reference frequency is 1MHz f = 6.75MHz Differential Gain Differential Phase MAX UNITS -0.1 -1 f = 11MHz f = 27MHz TYP -0.3 -3 -33 +1 dB -41 DC-coupled output, 5-step modulated staircase f = 3.58MHz or 4.43MHz 0.2 AC-coupled output, 5-step modulated staircase f = 3.58MHz or 4.43MHz 0.4 DC-coupled output, 5-step modulated staircase f = 3.58MHz 0.62 f = 4.43MHz 0.75 AC-coupled output, 5-step modulated staircase f = 3.58MHz 0.78 f = 4.43MHz 1.01 DG % DP Degrees 2T Pulse Response 2T = 200ns or 250ns 0.2 K% 2T Bar Response Bar time is 18µs, the beginning 2.5% and the ending 2.5% of the bar time are ignored, 2T = 200ns or 250ns 0.2 K% 2T Pulse-to-Bar K Rating Bar time is 18µs, the beginning 2.5% and the ending 2.5% of the bar time are ignored, 2T = 200ns or 250ns 0.3 K% 4 _______________________________________________________________________________________ CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support (VDD = VSHDN = 3.3V, VSMARTSLEEP = VINT/EXT = VGND = 0V, RL = 150Ω to GND. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Nonlinearity 5-step staircase 0.1 % Group Delay Distortion 100kHz ≤ f ≤ 5MHz, inputs are 1VP-P 10 ns Peak Signal to RMS Noise 100kHz ≤ f ≤ 5MHz, inputs are 1VP-P 67 dB Power-Supply Rejection Ratio f = 100kHz, 200mVP-P, input referred 43 dB Output Impedance f = 5MHz 6 Ω Enable Time CVBSIN = 1V, output settled to within 1% of the final voltage, RL = 150Ω to GND 13 µs Disable Time CVBSIN = 1V, output settled to within 1% of the final voltage, RL = 150Ω to GND 1.1 µs All Hostile Output Crosstalk f = 4.43MHz -70 dB All Hostile Input Crosstalk f = 4.43MHz, SHDN = GND, input termination resistors are 75Ω -69 dB CROSSTALK Note 1: All devices are 100% production tested at TA = +25°C. Specifications over temperature limits are guaranteed by design. Note 2: Specified current is an average over time. _______________________________________________________________________________________ 5 MAX9513 AC ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (VDD = V SHDN = +3.3V, VSMARTSLEEP = VINT/EXT = VGND = 0V. RL = 150Ω to GND. TA = +25°C, unless otherwise noted.) -10 -20 -30 -40 0.4 0.2 0 -0.2 -0.4 MAX9513 toc03 0 -10 -20 -30 -40 -0.6 -50 -50 -0.8 -60 -1.0 -60 100k 1M 10M 10M 100k 100M 1M 10M 100M FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) LARGE-SIGNAL GAIN FLATNESS vs. FREQUENCY GROUP DELAY POWER-SUPPLY REJECTION RATIO vs. FREQUENCY VOUT = 2VP-P 125 -10 -20 DELAY (ns) 0.2 0 -0.2 PSRR (dB) 100 0.4 MAX9513 toc06 0.6 0 MAX9513 toc05 150 MAX9513 toc04 VOUT = 2VP-P NORMALIZED TO 1MHz 0.8 1M 100k 100M 1.0 75 50 -30 -40 -50 -0.4 25 -0.6 -60 0 -70 -0.8 -25 -1.0 100k 1M 10M -80 1M 100k 100M 10M 100M 10k 100k 1M 10M FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) QUIESCENT SUPPLY CURRENT vs. TEMPERATURE VOLTAGE GAIN vs. TEMPERATURE OUTPUT VOLTAGE vs. INPUT VOLTAGE 13.0 12.5 12.0 3.5 2.00 1.99 1.98 1.97 CVBSIN INPUT ONLY 3.0 OUTPUT VOLTAGE (V) 2.01 VOLTAGE GAIN (V/V) 13.5 4.0 MAX9513 toc08 2.02 MAX9513 toc07 14.0 100M MAX9513 toc09 OUTPUT AMPLITUDE (dB) 0.6 VOUT = 2VP-P NORMALIZED TO 1MHz 10 OUTPUT AMPLITUDE (dB) 0 VOUT = 100mVP-P NORMALIZED TO 1MHz 0.8 20 MAX9513 toc02 VOUT = 100mVP-P NORMALIZED TO 1MHz OUTPUT AMPLITUDE (dB) OUTPUT AMPLITUDE (dB) 1.0 MAX9513 toc01 20 10 LARGE-SIGNAL GAIN vs. FREQUENCY SMALL-SIGNAL GAIN FLATNESS vs. FREQUENCY SMALL-SIGNAL GAIN vs. FREQUENCY SUPPLY CURRENT (mA) MAX9513 CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support 2.5 2.0 1.5 1.0 0.5 11.5 1.96 11.0 -0.5 1.95 -50 -25 0 25 50 75 TEMPERATURE (°C) 6 0 100 125 -50 -25 0 25 50 75 TEMPERATURE (°C) 100 125 -0.5 0 0.5 1.0 INPUT VOLTAGE (V) _______________________________________________________________________________________ 1.5 2.0 CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support MAX9513 toc12 MAX9513 toc11 MAX9513 toc10 DIFFERENTIAL GAIN (%) 12.5T RESPONSE 2T RESPONSE DIFFERENTIAL GAIN AND PHASE 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 1 2 3 4 5 6 CVBSIN 200mV/div CVBSIN 200mV/div CVBSOUT 400mV/div CVBSOUT 400mV/div 7 DIFFERENTIAL PHASE (deg) 0.8 0.4 0 -0.4 -0.8 1 2 3 4 5 6 400ns/div 100ns/div 7 STEP NTC-7 VIDEO TEST SIGNAL ON CVBS OUTPUTS MAX9513 toc15 MAX9513 toc14 CVBSIN 500mV/div CVBSOUT1 1V/div 10μs/div PAL COLOR BARS PAL MULTIBURST RESPONSE MAX9513 toc13 10μs/div CVBSIN 500mV/div CVBSIN 500mV/div CVBSOUT1 1V/div CVBSOUT1 1V/div 10μs/div _______________________________________________________________________________________ 7 MAX9513 Typical Operating Characteristics (continued) (VDD = V SHDN = +3.3V, VSMARTSLEEP = VINT/EXT = VGND = 0V. RL = 150Ω to GND. TA = +25°C, unless otherwise noted.) Typical Operating Characteristics (continued) (VDD = V SHDN = +3.3V, VSMARTSLEEP = VINT/EXT = VGND = 0V. RL = 150Ω to GND. TA = +25°C, unless otherwise noted.) ENABLE TIME FIELD SQUARE-WAVE RESPONSE DISABLE TIME MAX9513 toc17 MAX9513 toc16 MAX9513 toc18 INPUT VOLTAGE = 1V INPUT VOLTAGE = 1V CVBSIN 500mV/div OUTPUT 1V/div OUTPUT 1V/div CVBSOUT1 1V/div SHDN 1V/div SHDN 1V/div 2μs/div 200ns/div PULLDOWN RESISTANCE DISTRIBUTION PULLDOWN RESISTANCE vs. TEMPERATURE FREQUENCY RESPONSE AT 6.75MHz DISTRIBUTION 6.5 6.0 MAX9513 toc21 MAX9513 toc20 7.0 5.5 PROBABILITY PULLDOWN RESISTANCE (Ω) MAX9513 toc19 2ms/div PROBABILITY MAX9513 CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 PULLDOWN RESISTANCE (Ω) 8 -50 -25 0 25 50 75 TEMPERATURE (°C) 100 125 -0.6 -0.5 -0.4 -0.3 -0.2 ATTENUATION (dB) _______________________________________________________________________________________ -0.1 0 CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support INPUT-TO-INPUT CROSSTALK vs. FREQUENCY OUTPUT IMPEDANCE (Ω) -20 CROSSTALK (dB) PROBABILITY 100 MAX9513 toc23 MAX9513 toc22 0 OUTPUT IMPEDANCE vs. FREQUENCY -40 -60 -80 MAX9513 toc24 FREQUENCY RESPONSE AT 27MHz DISTRIBUTION 10 1 -100 -120 -52 -50 -48 -46 -44 -42 -40 -38 -36 -34 -32 100k 1M 10M 100M 0.1 100k 1M FREQUENCY (Hz) ATTENUATION (dB) 10M 100M FREQUENCY (Hz) Pin Description PIN NAME 1, 13 VDD Power Supply. Bypass VDD with a 0.1µF capacitor to ground. 2, 3, 8, 16 GND Ground 4 CVBSIN 5 EXTCVBSIN 6 SHDN 7, 11, 12 N.C. FUNCTION Internal CVBS Signal Input. Directly connect this input to the video DAC output. External CVBS Signal Input. AC-couple the signal through a 0.1µF capacitor to this input. Active-Low Shutdown Logic Input. Connect to logic-low to place device in shutdown. Connect to logic-high for normal operation. No Connection. Connect to GND. 9 CVBSOUT2 CVBS Output 2 10 CVBSOUT1 CVBS Output 1. CVBSOUT1 is actively pulled to GND when INT/EXT is logic-high. 14 INT/EXT 15 SMARTSLEEP — EP Internal/External CVBS Logic Input. Connect INT/EXT low to process CVBS video signals from CVBSIN input. Connect INT/EXT high to process CVBS video signals from EXTCVBSIN input. SmartSleep Logic Input. Connect to logic-high to activate SmartSleep operation. Exposed Pad. Connect EP to GND. EP is also internally connected to GND. _______________________________________________________________________________________ 9 MAX9513 Typical Operating Characteristics (continued) (VDD = V SHDN = +3.3V, VSMARTSLEEP = VINT/EXT = VGND = 0V. RL = 150Ω to GND. TA = +25°C, unless otherwise noted.) MAX9513 CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support +3.3V 0.1μF VDD DVD CHIP INT/EXT MAX9513 MICROCONTROLLER +3.3V SMARTSLEEP CONTROL LOGIC SHDN +3.3V ACTIVE VIDEO DETECT LOAD SENSE CVBS SIGNAL 75Ω CVBSOUT1 6dB CVBSOUT/IN CVBSIN CURRENT DAC BUFFER LPF EXTCVBSIN LOAD SENSE CLAMP 6dB CVBSOUT2 75Ω TO Y/C SEPARATION 0.1μF GND Figure 1. Typical Application Circuit for Portable DVD Player Detailed Description In the typical application circuit shown in Figure 1, the current DAC generates an internal video signal. When the internal signal source is selected, the MAX9513 filters the signal and then drives the video connectors through a 75Ω back termination resistor. When the external video source is selected, the MAX9513 selects the external video signal (EXTCVBSIN), then clamps, filters, and amplifies it. The output stage of the amplifier connected to CVBSOUT1 becomes high impedance. The n-channel switch at CVBSOUT1 turns on, thereby converting the back termination resistor into an input termination resistor. 10 SmartSleep Feature The SmartSleep feature is activated when the SMARTSLEEP input is connected to logic-high. The SmartSleep feature provides intelligent power management by selectively disabling the filters and output amplifiers based on the presence of video signals or loads attached to the outputs. If the SmartSleep feature is not activated and the part is not in shutdown, the filters and output amplifiers completely turn on, regardless of whether there is a video signal at the CVBSIN input and whether there are loads connected at the outputs. SmartSleep only works with DC-coupled loads. ______________________________________________________________________________________ CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support video signal is present. When the MAX9513 detects a video signal with sync at the CVBSIN input, the control logic enters the active-detect mode and enables the load-sense circuitry (Figure 3). The supply current is typically 17µA. If an output load is not connected to any amplifier, the MAX9513 remains in active-detect mode. Eight times per second, each load-sense circuit checks for a load by connecting an internal 15kΩ pullup resistor to the output for 1ms. If the output is pulled up, no load is present. If the output stays low, a load is connected. Active-Detect Mode The active video detect circuit slices the CVBSIN signal at 4.7% of the power supply (155mV for a 3.3V supply). If the transitions occur at a rate of 14.3kHz or higher, a +3.3V 7μA VDD INT/EXT MAX9513 CONTROL LOGIC SMARTSLEEP +3.3V SHDN ACTIVE VIDEO DETECT LOAD SENSE OFF 6dB CVBSIN CURRENT DAC +3.3V OFF CVBS1 LPF LOAD SENSE OFF EXTCVBSIN 75Ω OFF BUFFER NO VIDEO SIGNAL CVBSOUT1 OFF CLAMP OFF 6dB CVBSOUT2 75Ω CVBS2 OFF GND Figure 2. Standby Mode ______________________________________________________________________________________ 11 MAX9513 Standby Mode In standby mode, the filter and output amplifiers are off, and only the active video detect circuit is operational. Quiescent current consumption is approximately 7µA (Figure 2). The active video detect circuit checks whether sync is present on the CVBSIN signal. If no sync is detected, the device remains in standby mode. MAX9513 CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support +3.3V 17μA VDD INT/EXT MAX9513 CONTROL LOGIC SMARTSLEEP +3.3V SHDN LOAD SENSE ACTIVE VIDEO DETECT 75Ω CVBS 1 OFF CVBSIN CURRENT DAC CVBSOUT1 6dB BUFFER OFF +3.3V OFF EXTCVBSIN VIDEO SIGNAL PRESENT NO LOAD LPF LOAD SENSE CLAMP OFF 6dB 0 TO 50mV CVBSOUT2 75Ω OFF GND Figure 3. Active-Detect Mode with No Output Loads 12 ______________________________________________________________________________________ CVBS 2 CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support output is sourcing current during a horizontal line time. If no sourcing current is detected within one horizontal line time (approximately 64µs), the load has been disconnected and the amplifier returns to active-detect mode. If, at any time, the input video signal is removed, the MAX9513 returns to standby mode. If the SmartSleep feature is not activated and the part is not in shutdown, the filters and amplifiers completely turn on, regardless of whether there is a video signal at the CVBSIN input and whether there are loads connected at the outputs. +3.3V 2.9mA PLUS LOAD CURRENT VDD INT/EXT MAX9513 CONTROL LOGIC SMARTSLEEP +3.3V SHDN LOAD SENSE ACTIVE VIDEO DETECT CVBSOUT1 6dB 75Ω CVBS1 CVBSIN CURRENT DAC 75Ω BUFFER +3.3V LPF EXTCVBSIN VIDEO SIGNAL PRESENT LOAD SENSE CLAMP OFF 0 TO 50mV 6dB CVBSOUT2 75Ω CVBS2 OFF GND Figure 4. Full-Operation Mode with CVBSOUT1 Loaded ______________________________________________________________________________________ 13 MAX9513 Full-Operation Mode If a load is connected to an output, the corresponding filter and amplifier turn on and remain on until the output load is disconnected. In full-operation mode, SmartSleep intelligently reduces the supply current based on the input signal presence and output loading. Figures 4, 5, and 6 show which portions of the MAX9513 turn on and which remain off with different load configurations. When an amplifier is on, it continually checks if the load has been disconnected by detecting if the amplifier MAX9513 CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support +3.3V 2.9mA PLUS LOAD CURRENT VDD INT/EXT MAX9513 CONTROL LOGIC SMARTSLEEP +3.3V SHDN LOAD SENSE ACTIVE VIDEO DETECT CVBSOUT1 6dB CVBSIN CURRENT DAC LPF EXTCVBSIN VIDEO SIGNAL PRESENT CVBS1 OFF BUFFER +3.3V 75Ω LOAD SENSE CLAMP OFF 0 TO 50mV 6dB CVBSOUT2 75Ω 75Ω GND Figure 5. Full-Operation Mode with CVBSOUT2 Loaded 14 CVBS2 ______________________________________________________________________________________ CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support MAX9513 +3.3V 5.3mA PLUS LOAD CURRENT VDD INT/EXT MAX9513 CONTROL LOGIC SMARTSLEEP +3.3V SHDN LOAD SENSE ACTIVE VIDEO DETECT CVBSOUT1 6dB 75Ω CVBS1 CVBSIN CURRENT DAC 75Ω BUFFER +3.3V LPF EXTCVBSIN VIDEO SIGNAL PRESENT LOAD SENSE CLAMP OFF 0 TO 50mV 6dB CVBSOUT2 75Ω CVBS2 75Ω GND Figure 6. Full-Operation Mode with Both Outputs Loaded ______________________________________________________________________________________ 15 MAX9513 CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support Internal Mode Versus External Mode Internal Mode Set the INT/EXT control input low for internal mode. The MAX9513 processes video signals from an internal source such as a DVD chip (Figure 7). The 2:1 multiplexer selects the video signal on CVBSIN. The EXTCVBSIN video signal is ignored. External Mode Set the INT/EXT control input high for external mode. The 2:1 multiplexer selects the video signal on EXTCVBSIN (Figure 8). The CVBSIN signal is ignored. The block drawing of the MAX9513 in Figure 8 shows which circuits are off while in external mode. SmartSleep does not function in external mode, and the SMARTSLEEP input is ignored. +3.3V 0.1μF 11.6mA PLUS LOAD CURRENT VDD LOGICLOW DVD CHIP INT/EXT MAX9513 MICROCONTROLLER SMARTSLEEP +3.3V CONTROL LOGIC SHDN ACTIVE VIDEO DETECT LOAD SENSE CVBSOUT1 6dB 75Ω CVBS1 CVBSIN CURRENT DAC BUFFER LPF EXTCVBSIN LOAD SENSE CLAMP OFF 6dB CVBSOUT2 75Ω 0.1μF GND Figure 7. Internal Mode Operation for Portable DVD Application 16 ______________________________________________________________________________________ Y/C SEPARATION CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support MAX9513 +3.3V 0.1μF 4.3mA PLUS LOAD CURRENT VDD DVD CHIP LOGICHIGH INT/EXT MAX9513 MICROCONTROLLER +3.3V SMARTSLEEP +3.3V CONTROL LOGIC SHDN ACTIVE VIDEO DETECT LOAD SENSE OFF 6dB CVBSIN CURRENT DAC CVBSOUT1 75Ω CVBSIN 75Ω VIDEO SOURCE OFF BUFFER LPF EXTCVBSIN LOAD SENSE CLAMP 6dB 0.1μF CVBSOUT2 75Ω TO Y/C SEPARATION GND Figure 8. External Mode Operation for Portable DVD Application ______________________________________________________________________________________ 17 MAX9513 CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support Inputs Shutdown The MAX9513 CVBSIN input should be directly connected to the output of the video current DAC. DC-coupling ensures that the input signals are ground referenced such that the sync tip of CVBSIN is within 50mV of ground. The EXTCVBSIN input can only handle signals with a sync pulse, such as composite video and luma. Because the DC level of an external video input signal is unknown, the external video signal is AC-coupled through a 0.1µF capacitor, and a sync tip clamp sets the internal DC level of the MAX9513. A 2:1 multiplexer under the control of the INT/EXT input selects either the signal at CVBSIN or EXTCVBSIN. When SHDN is low, the MAX9513 typically draws less than 10nA supply current. All the amplifier outputs become high impedance. The effective output resistance at the video outputs is 28kΩ, due to the internal feedback resistors to ground. Video Reconstruction Filter The MAX9513 filter passband is 6.75MHz, which makes the device suitable for the higher bandwidth video signals from a DVD chip. Broadcast video signals actually require less bandwidth because of channel limitations: NTSC signals have a 4.2MHz bandwidth, and PAL signals have a 5MHz bandwidth. Video signals from a DVD player are not channel limited; therefore, the bandwidth of DVD video signals can push right against the Nyquist limit of 6.75MHz. (Recommendation ITU-R BT.601-5 specifies 13.5MHz as the sampling rate for standarddefinition video). Therefore, the maximum bandwidth of the signal is 6.75MHz. To reduce the filtering requirements, most modern video systems oversample the input by two times, thus clocking the video current DAC at 27MHz. Outputs The video output amplifiers can both source and sink load current, allowing output loads to be DC- or ACcoupled. The amplifier output stage needs approximately 300mV of headroom from either supply rail. The MAX9513 has an internal level-shift circuit that positions the sync tip at approximately 300mV at the output. If the supply voltage is greater than 3.135V (5% below a 3.3V supply), each amplifier can drive two DC-coupled video loads to ground. If the supply is less than 3.135V, each amplifier can drive only one DC-coupled or AC-coupled video load. 18 Applications Information Reducing Power Consumption in the Video DACs CVBSIN has a high-impedance input buffer and can work with source resistances as high as 300Ω. To reduce power dissipation in the video DACs, the DAC output resistor can be scaled up in value. The reference resistor that sets the reference current inside the video DACs must also be similarly scaled up. For instance, if the output resistor is 37.5Ω, the DAC must source 26.7mA when the output is 1V. If the output resistor is increased to 300Ω, the DAC only needs to source 3.33mA when the output is 1V. There is parasitic capacitance from the DAC output to ground. That capacitance in parallel with the DAC output resistor forms a pole that can potentially roll off the frequency response of the video signal. For example, 300Ω in parallel with 50pF creates a pole at 10.6MHz. To minimize this capacitance, reduce the area of the signal trace attached to the DAC output as much as possible, and place the MAX9513 as close to the video DAC outputs as possible. AC-Coupling the Outputs The outputs can be AC-coupled since the output stage can source and sink current as shown in Figure 9. Coupling capacitors should be 220µF or greater to keep the highpass filter formed by the 150Ω equivalent resistance of the video transmission line to a corner frequency of 4.8Hz or below. The frame rate of PAL systems is 25Hz, and the frame rate of NTSC systems is 30Hz. The corner frequency should be well below the frame rate. SmartSleep only works with DC-coupled loads. Power-Supply Bypassing and Ground The MAX9513 operates from a single-supply voltage down to 2.7V, allowing for low-power operation. Bypass VDD to GND with a 0.1µF capacitor. Place all external components as close as possible to the device. ______________________________________________________________________________________ CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support MAX9513 +3.3V 0.1μF VDD INT/EXT MAX9513 CONTROL LOGIC SMARTSLEEP SHDN +3.3V ACTIVE VIDEO DETECT LOAD SENSE CVBSOUT1 6dB CURRENT DAC 75Ω CVBS1 CVBSIN 220μF BUFFER LPF EXTCVBSIN LOAD SENSE OFF 6dB CLAMP CVBSOUT2 75Ω CVBS2 220μF GND Figure 9. AC-Coupled Outputs ______________________________________________________________________________________ 19 CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support N.C. N.C. CVBSOUT1 CVBSOUT2 12 11 10 9 TOP VIEW VDD 13 8 GND INT/EXT 14 7 N.C. 6 SHDN 5 EXTCVBSIN MAX9513 SMARTSLEEP 15 GND 16 2 VDD GND 1 3 4 CVBSIN + GND MAX9513 Pin Configuration THIN QFN (3mm x 3mm) Block Diagrams (continued) INT/EXT MAX9513 SMARTSLEEP CONTROL LOGIC 300mV TO 400mV SHDN LOAD SENSE ACTIVE VIDEO DETECT 0 TO 50mV CVBSOUT1 6dB CVBSIN BUFFER LPF EXTCVBSIN CLAMP LOAD SENSE 6dB CVBSOUT2 Chip Information PROCESS: BiCMOS 20 ______________________________________________________________________________________ CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support PACKAGE CODE DOCUMENT NO. 16 TQFN-EP T1633-4 21-0136 (NE - 1) X e E MARKING 12x16L QFN THIN.EPS PACKAGE TYPE E/2 D2/2 (ND - 1) X e D/2 AAAA e CL D D2 k CL b 0.10 M C A B E2/2 L E2 0.10 C C L 0.08 C C L A A2 A1 L L e e PACKAGE OUTLINE 8, 12, 16L THIN QFN, 3x3x0.8mm 21-0136 I 1 2 ______________________________________________________________________________________ 21 MAX9513 Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. MAX9513 CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support Package Information (continued) For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. PKG 8L 3x3 12L 3x3 16L 3x3 REF. MIN. NOM. MAX. MIN. NOM. MAX. MIN. NOM. MAX. A 0.70 0.75 0.80 0.70 0.75 0.80 0.70 0.75 0.80 b 0.25 0.30 0.35 0.20 0.25 0.30 0.20 0.25 0.30 D 2.90 3.00 3.10 2.90 3.00 3.10 2.90 3.00 3.10 E 2.90 3.00 3.10 2.90 3.00 3.10 2.90 3.00 3.10 e L 0.65 BSC. 0.35 N 0.55 0.75 0.45 0.55 ND 2 3 2 3 0 A2 k 0.02 0.05 0 0.20 REF 0.25 - 0.65 0.30 0.02 0.25 - 0.50 4 4 0.05 0 0.02 0.05 0.20 REF 0.20 REF - 0.40 16 12 NE A1 0.50 BSC. 0.50 BSC. 8 EXPOSED PAD VARIATIONS - 0.25 - PKG. CODES D2 E2 PIN ID JEDEC MIN. NOM. MAX. MIN. NOM. MAX. TQ833-1 0.25 0.70 1.25 0.25 0.70 1.25 0.35 x 45° WEEC WEED-1 T1233-1 0.95 1.10 1.25 0.95 1.10 1.25 0.35 x 45° T1233-3 0.95 1.10 1.25 0.95 1.10 1.25 0.35 x 45° WEED-1 T1233-4 0.95 1.10 1.25 0.95 1.10 1.25 0.35 x 45° WEED-1 T1633-2 0.95 1.10 1.25 0.95 1.10 1.25 0.35 x 45° WEED-2 T1633F-3 0.65 0.80 0.95 0.65 0.80 0.95 0.225 x 45° WEED-2 T1633FH-3 0.65 0.80 0.95 0.65 0.80 0.95 0.225 x 45° WEED-2 T1633-4 0.95 1.10 1.25 0.95 1.10 1.25 0.35 x 45° WEED-2 T1633-5 0.95 1.10 1.25 0.95 1.10 1.25 0.35 x 45° WEED-2 - NOTES: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. DIMENSIONING & TOLERANCING CONFORM TO ASME Y14.5M-1994. ALL DIMENSIONS ARE IN MILLIMETERS. ANGLES ARE IN DEGREES. N IS THE TOTAL NUMBER OF TERMINALS. THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING CONVENTION SHALL CONFORM TO JESD 95-1 SPP-012. DETAILS OF TERMINAL #1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE ZONE INDICATED. THE TERMINAL #1 IDENTIFIER MAY BE EITHER A MOLD OR MARKED FEATURE. DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.20 mm AND 0.25 mm FROM TERMINAL TIP. ND AND NE REFER TO THE NUMBER OF TERMINALS ON EACH D AND E SIDE RESPECTIVELY. DEPOPULATION IS POSSIBLE IN A SYMMETRICAL FASHION. COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS . DRAWING CONFORMS TO JEDEC MO220 REVISION C. MARKING IS FOR PACKAGE ORIENTATION REFERENCE ONLY. NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY. WARPAGE NOT TO EXCEED 0.10mm. PACKAGE OUTLINE 8, 12, 16L THIN QFN, 3x3x0.8mm 21-0136 22 ______________________________________________________________________________________ I 2 2 CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support REVISION NUMBER REVISION DATE DESCRIPTION 0 7/06 Initial release 1 2/09 Removed QSOP package PAGES CHANGED — 1, 2, 9, 20 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 23 © 2009 Maxim Integrated Products M. Quijanoy Maxim is a registered trademark of Maxim Integrated Products, Inc. MAX9513 Revision History