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19-0604; Rev 1; 2/09
KIT ATION EVALU LE B AVAILA
CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
General Description
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 75, which is equivalent to two video loads, or can be AC-coupled to a load of 150. 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 7A. 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 -40C to +125C 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
MAX9513
Ordering Information
PART MAX9513ATE+ PIN-PACKAGE 16 TQFN-EP* (3mm x 3mm) TOP MARK AFC
Note: The device is specified over the -40C to +125C operating temperature range. +Denotes lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad.
Block Diagrams
INT/EXT
MAX9513
Applications
Portable DVD Players Portable Set-Top Boxes Personal Video Recorders (PVRs) Portable Media Players (PMPs) Portable Video
SMARTSLEEP SHDN
CONTROL LOGIC LOAD SENSE ACTIVE VIDEO DETECT 6dB CVBSOUT1
CVBSIN BUFFER LPF EXTCVBSIN CLAMP 6dB LOAD SENSE CVBSOUT2
Block Diagrams continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
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.
CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
MAX9513
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 = +70C) 16-Pin TQFN (derate 15.6mW/C above +70C)..........1250mW Operating Temperature Range .........................-40C to +125C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C
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 = +25C.) (Note 1)
PARAMETER Supply Voltage Range SYMBOL VDD CONDITIONS Guaranteed by PSRR INT/EXT = GND, VCVBSIN = 0.3V INT/EXT = VDD, EXTCVBSIN is unconnected Supply Current IDD SMARTSLEEP = VDD, CVBSIN has no active video signal SMARTSLEEP = VDD, CVBSIN has a blackburst video signal with sync tip at GND (Note 2) Shutdown Supply Current SMARTSLEEP CHARACTERISTICS Minimum Line Frequency Sync Slice Level Output Load Detect Threshold DC CHARACTERISTICS Input Voltage Range Input Current Input Resistance VIN IIN RIN CVBSIN, guaranteed by output voltage swing VCVBSIN = 0V CVBSIN 2.7V < VDD < 3.6V 3.0V < VDD < 3.6V 0 0 2 20 1.05 V 1.2 5 A M CVBSIN CVBSIN Sync pulse present, RL to GND 14.3 4.1 5.2 200 kHz % VDD ISHDN SHDN = GND MIN 2.7 13 4.3 7 TYP MAX 3.6 16 mA 6 14 A 17 0.01 10 A UNITS V
2
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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 = +25C.) (Note 1)
PARAMETER Sync-Tip Clamp Level Input Clamping Current EXTCVBSIN Input Voltage Range SYMBOL VCLP EXTCVBSIN EXTCVBSIN = 500mV + VCLP Guaranteed by output voltage swing 2.7V < VDD < 3.6V 3.0V < VDD < 3.6V CONDITIONS MIN 0.25 0.5 1 TYP MAX 0.37 1.5 1.05 VP-P 1.2 UNITS V A
MAX9513
Sync Crush
EXTCVBSIN, percentage reduction in sync pulse (0.3VP-P), guaranteed by input clamping current measurement, measured at input EXTCVBSIN AV RL = 150 to VDD / 2, 0V VIN 1.05V, VDD = 2.7V RL = 150 to VDD / 2, 0V VIN 1.05V, VDD = 2.7V VCVBSIN = 0V, INT/EXT = GND, RL = 150 to GND CEXTCVBSIN = 0.1F to GND, INT/EXT = VDD, RL = 150 to GND Measured at output, VDD = 2.7V, 0V VIN 1.05V, RL = 150 to -0.2V TA = -40C to +85C TA = -40C to +125C 5.7 -0.2 0.21 0.21 2.027 2.006 2.027 2.316 2.292 2.316 2.027 2.4 2.1 0.47 2.1 2.4 300 6 0 0.3 0.27 2.1
2
%
Maximum Input Source Resistance DC Voltage Gain DC Gain Matching
6.3 +0.2 0.38 V 0.38 2.163 2.163 2.163 2.472 2.472 2.472 2.163 VP-P dB dB
Output Level
Measured at output, VDD = 2.7V, 0V VIN 1.05V, RL = 150 to VDD / 2 Output Voltage Swing Measured at output, VDD = 3V, 0V VIN 1.2V, RL = 150 to -0.2V TA = -40C to +85C TA = -40C to +125C
Measured at output, VDD = 3V, 0V VIN 1.2V, RL = 150 to VDD / 2 Measured at output, VDD = 3.135V, 0V VIN 1.05V, RL = 75 to -0.2V Output Resistance ROUT VOUT = 1.3V, -5mA ILOAD +5mA
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3
CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
MAX9513
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 = +25C.) (Note 1)
PARAMETER Power-Supply Rejection Ratio Output Pulldown Resistance Output Shutdown Impedance LOGIC INPUTS (SMARTSLEEP, SHDN, INT/EXT) Logic-Low Threshold Logic-High Threshold Logic Input Current VIL VIH IIL / IIH VI = 0V or VDD 0.7 x VDD 0.01 10 0.3 x VDD V V A SYMBOL PSRR RPD CONDITIONS 2.7V VDD 3.6V, input referred, RL = 150 to GND INT/EXT = VDD, CVBSOUT1 MIN 48 3.7 28 TYP MAX UNITS dB k
AC ELECTRICAL CHARACTERISTICS
(VDD = VSHDN = 3.3V, VSMARTSLEEP = VINT/EXT = VGND = 0V, RL = 150 to GND. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1)
PARAMETER Standard-Definition Reconstruction Filter SYMBOL CONDITIONS f = 5.5MHz Inputs are 1VP-P, reference frequency is 1MHz f = 6.75MHz f = 11MHz f = 27MHz DC-coupled output, 5-step modulated staircase Differential Gain DG AC-coupled output, 5-step modulated staircase DC-coupled output, 5-step modulated staircase Differential Phase DP AC-coupled output, 5-step modulated staircase 2T Pulse Response 2T Bar Response 2T Pulse-to-Bar K Rating 2T = 200ns or 250ns Bar time is 18s, the beginning 2.5% and the ending 2.5% of the bar time are ignored, 2T = 200ns or 250ns Bar time is 18s, the beginning 2.5% and the ending 2.5% of the bar time are ignored, 2T = 200ns or 250ns f = 3.58MHz or 4.43MHz f = 3.58MHz f = 4.43MHz f = 3.58MHz f = 4.43MHz 0.4 0.62 0.75 0.78 1.01 0.2 0.2 0.3 K% K% K% Degrees f = 3.58MHz or 4.43MHz -33 -1 MIN TYP -0.1 -0.3 -3 -41 0.2 % +1 dB MAX UNITS
4
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CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
AC ELECTRICAL CHARACTERISTICS (continued)
(VDD = VSHDN = 3.3V, VSMARTSLEEP = VINT/EXT = VGND = 0V, RL = 150 to GND. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1)
PARAMETER Nonlinearity Group Delay Distortion Peak Signal to RMS Noise Power-Supply Rejection Ratio Output Impedance Enable Time Disable Time CROSSTALK All Hostile Output Crosstalk All Hostile Input Crosstalk f = 4.43MHz f = 4.43MHz, SHDN = GND, input termination resistors are 75 -70 -69 dB dB SYMBOL 5-step staircase 100kHz f 5MHz, inputs are 1VP-P 100kHz f 5MHz, inputs are 1VP-P f = 100kHz, 200mVP-P, input referred f = 5MHz CVBSIN = 1V, output settled to within 1% of the final voltage, RL = 150 to GND CVBSIN = 1V, output settled to within 1% of the final voltage, RL = 150 to GND CONDITIONS MIN TYP 0.1 10 67 43 6 13 1.1 MAX UNITS % ns dB dB s s
MAX9513
Note 1: All devices are 100% production tested at TA = +25C. Specifications over temperature limits are guaranteed by design. Note 2: Specified current is an average over time.
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CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
MAX9513
Typical Operating Characteristics
(VDD = V SHDN = +3.3V, VSMARTSLEEP = VINT/EXT = VGND = 0V. RL = 150 to GND. TA = +25C, unless otherwise noted.)
SMALL-SIGNAL GAIN vs. FREQUENCY
MAX9513 toc01
SMALL-SIGNAL GAIN FLATNESS vs. FREQUENCY
MAX9513 toc02
LARGE-SIGNAL GAIN vs. FREQUENCY
10 OUTPUT AMPLITUDE (dB) 0 -10 -20 -30 -40 -50 -60 VOUT = 2VP-P NORMALIZED TO 1MHz
MAX9513 toc03
20 10 OUTPUT AMPLITUDE (dB) 0 -10 -20 -30 -40 -50 -60 100k 1M 10M VOUT = 100mVP-P NORMALIZED TO 1MHz
1.0 0.8 OUTPUT AMPLITUDE (dB) 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1.0 VOUT = 100mVP-P NORMALIZED TO 1MHz
20
100M
100k
1M
10M
100M
100k
1M
10M
100M
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
LARGE-SIGNAL GAIN FLATNESS vs. FREQUENCY
MAX9513 toc04
GROUP DELAY
MAX9513 toc05
POWER-SUPPLY REJECTION RATIO vs. FREQUENCY
-10 -20 PSRR (dB) -30 -40 -50
MAX9513 toc06
1.0 0.8 OUTPUT AMPLITUDE (dB) 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1.0 100k 1M 10M VOUT = 2VP-P NORMALIZED TO 1MHz
150 VOUT = 2VP-P 125 100 DELAY (ns) 75 50 25 0 -25
0
-60 -70 -80 100k 1M 10M 100M 10k 100k 1M FREQUENCY (Hz) 10M 100M FREQUENCY (Hz)
100M
FREQUENCY (Hz)
QUIESCENT SUPPLY CURRENT vs. TEMPERATURE
MAX9513 toc07
VOLTAGE GAIN vs. TEMPERATURE
MAX9513 toc08
OUTPUT VOLTAGE vs. INPUT VOLTAGE
3.5 3.0 OUTPUT VOLTAGE (V) 2.5 2.0 1.5 1.0 0.5 CVBSIN INPUT ONLY
MAX9513 toc09
14.0 13.5 SUPPLY CURRENT (mA) 13.0 12.5 12.0 11.5 11.0 -50 -25 0 25 50 75 100
2.02 2.01 VOLTAGE GAIN (V/V) 2.00 1.99 1.98 1.97 1.96 1.95
4.0
0 -0.5 -50 -25 0 25 50 75 100 125 -0.5 0 0.5 1.0 1.5 2.0 TEMPERATURE (C) INPUT VOLTAGE (V)
125
TEMPERATURE (C)
6
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CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
Typical Operating Characteristics (continued)
(VDD = V SHDN = +3.3V, VSMARTSLEEP = VINT/EXT = VGND = 0V. RL = 150 to GND. TA = +25C, unless otherwise noted.)
MAX9513
DIFFERENTIAL GAIN AND PHASE
0.3 0.2 0.1 0 -0.1 -0.2 -0.3 0.8 DIFFERENTIAL PHASE (deg) 0.4 0 -0.4 -0.8 1 2 3 4 STEP 5 6 7 DIFFERENTIAL GAIN (%)
MAX9513 toc10
2T RESPONSE
MAX9513 toc11
12.5T RESPONSE
MAX9513 toc12
CVBSIN 200mV/div 1 2 3 4 5 6 7
CVBSIN 200mV/div
CVBSOUT 400mV/div
CVBSOUT 400mV/div
100ns/div
400ns/div
NTC-7 VIDEO TEST SIGNAL ON CVBS OUTPUTS
MAX9513 toc13
PAL MULTIBURST RESPONSE
MAX9513 toc14
PAL COLOR BARS
MAX9513 toc15
CVBSIN 500mV/div
CVBSIN 500mV/div
CVBSIN 500mV/div
CVBSOUT1 1V/div
CVBSOUT1 1V/div
CVBSOUT1 1V/div
10s/div
10s/div
10s/div
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7
CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
MAX9513
Typical Operating Characteristics (continued)
(VDD = V SHDN = +3.3V, VSMARTSLEEP = VINT/EXT = VGND = 0V. RL = 150 to GND. TA = +25C, unless otherwise noted.)
FIELD SQUARE-WAVE RESPONSE
MAX9513 toc16
ENABLE TIME
MAX9513 toc17
DISABLE TIME
MAX9513 toc18
INPUT VOLTAGE = 1V CVBSIN 500mV/div OUTPUT 1V/div
INPUT VOLTAGE = 1V OUTPUT 1V/div
CVBSOUT1 1V/div
SHDN 1V/div
SHDN 1V/div
2ms/div
2s/div
200ns/div
PULLDOWN RESISTANCE DISTRIBUTION
MAX9513 toc19
PULLDOWN RESISTANCE vs. TEMPERATURE
MAX9513 toc20
FREQUENCY RESPONSE AT 6.75MHz DISTRIBUTION
MAX9513 toc21
7.0 6.5 PULLDOWN RESISTANCE () 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0
PROBABILITY
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 PULLDOWN RESISTANCE ()
-50
-25
0
25
50
75
100
125
PROBABILITY -0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
TEMPERATURE (C)
ATTENUATION (dB)
8
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CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
Typical Operating Characteristics (continued)
(VDD = V SHDN = +3.3V, VSMARTSLEEP = VINT/EXT = VGND = 0V. RL = 150 to GND. TA = +25C, unless otherwise noted.)
MAX9513
FREQUENCY RESPONSE AT 27MHz DISTRIBUTION
MAX9513 toc22
INPUT-TO-INPUT CROSSTALK vs. FREQUENCY
MAX9513 toc23
OUTPUT IMPEDANCE vs. FREQUENCY
MAX9513 toc24
0 -20 CROSSTALK (dB) -40 -60 -80 -100 -120
100
OUTPUT IMPEDANCE () 100k 1M 10M 100M
PROBABILITY
10
1
0.1 100k 1M 10M 100M FREQUENCY (Hz)
-52 -50 -48 -46 -44 -42 -40 -38 -36 -34 -32 ATTENUATION (dB)
FREQUENCY (Hz)
Pin Description
PIN 1, 13 2, 3, 8, 16 4 5 6 7, 11, 12 9 10 14 15 -- NAME VDD GND CVBSIN EXTCVBSIN SHDN N.C. CVBSOUT2 CVBSOUT1 INT/EXT SMARTSLEEP EP FUNCTION Power Supply. Bypass VDD with a 0.1F capacitor to ground. Ground Internal CVBS Signal Input. Directly connect this input to the video DAC output. External CVBS Signal Input. AC-couple the signal through a 0.1F 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. CVBS Output 2 CVBS Output 1. CVBSOUT1 is actively pulled to GND when INT/EXT is logic-high. 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.
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CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
MAX9513
+3.3V
0.1F VDD DVD CHIP INT/EXT
MAX9513
MICROCONTROLLER +3.3V SMARTSLEEP SHDN ACTIVE VIDEO DETECT CVBS SIGNAL 6dB CURRENT DAC CVBSIN BUFFER EXTCVBSIN CLAMP 6dB 0.1F GND LPF LOAD SENSE CVBSOUT2 75 TO Y/C SEPARATION CONTROL LOGIC
+3.3V
LOAD SENSE CVBSOUT1 75 CVBSOUT/IN
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 75 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.
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.
10
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CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
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 7A (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. 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
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 17A. 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 15k 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.
MAX9513
+3.3V
7A VDD INT/EXT
MAX9513
SMARTSLEEP +3.3V SHDN ACTIVE VIDEO DETECT CONTROL LOGIC
LOAD SENSE OFF 6dB CVBSOUT1 75 CVBS1
CURRENT DAC NO VIDEO SIGNAL +3.3V
CVBSIN BUFFER LPF OFF CLAMP OFF
OFF
OFF
EXTCVBSIN
LOAD SENSE OFF 6dB OFF GND CVBSOUT2 75 CVBS2
Figure 2. Standby Mode
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11
CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
MAX9513
+3.3V
17A VDD
INT/EXT
MAX9513
SMARTSLEEP +3.3V SHDN LOAD SENSE ACTIVE VIDEO DETECT CVBSIN BUFFER LPF OFF CLAMP OFF 6dB OFF LOAD SENSE CVBSOUT2 75 CVBS 2 NO LOAD 6dB OFF CVBSOUT1 75 CVBS 1 CONTROL LOGIC
CURRENT DAC
OFF +3.3V EXTCVBSIN
VIDEO SIGNAL PRESENT 0 TO 50mV
GND
Figure 3. Active-Detect Mode with No Output Loads
12
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CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
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
output is sourcing current during a horizontal line time. If no sourcing current is detected within one horizontal line time (approximately 64s), 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.
MAX9513
+3.3V 2.9mA PLUS LOAD CURRENT VDD
INT/EXT
MAX9513
SMARTSLEEP +3.3V SHDN ACTIVE VIDEO DETECT 6dB CURRENT DAC CVBSIN BUFFER EXTCVBSIN CLAMP OFF 6dB OFF GND LPF LOAD SENSE CVBSOUT2 75 CVBS2 75 LOAD SENSE CVBSOUT1 75 CVBS1 CONTROL LOGIC
+3.3V
VIDEO SIGNAL PRESENT 0 TO 50mV
Figure 4. Full-Operation Mode with CVBSOUT1 Loaded
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13
CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
MAX9513
+3.3V 2.9mA PLUS LOAD CURRENT VDD
INT/EXT
MAX9513
SMARTSLEEP +3.3V SHDN ACTIVE VIDEO DETECT 6dB CURRENT DAC CVBSIN BUFFER EXTCVBSIN CLAMP OFF 6dB LPF LOAD SENSE CVBSOUT2 75 CVBS2 OFF LOAD SENSE CVBSOUT1 75 CVBS1 CONTROL LOGIC
+3.3V
VIDEO SIGNAL PRESENT 0 TO 50mV
75 GND
Figure 5. Full-Operation Mode with CVBSOUT2 Loaded
14
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CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
MAX9513
+3.3V 5.3mA PLUS LOAD CURRENT VDD
INT/EXT
MAX9513
SMARTSLEEP +3.3V SHDN ACTIVE VIDEO DETECT 6dB CURRENT DAC CVBSIN BUFFER EXTCVBSIN CLAMP OFF 6dB LPF LOAD SENSE CVBSOUT2 75 CVBS2 75 LOAD SENSE CVBSOUT1 75 CVBS1 CONTROL LOGIC
+3.3V
VIDEO SIGNAL PRESENT 0 TO 50mV
75 GND
Figure 6. Full-Operation Mode with Both Outputs Loaded
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15
CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
MAX9513
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
11.6mA PLUS LOAD CURRENT VDD DVD CHIP LOGICLOW INT/EXT
0.1F
MAX9513
MICROCONTROLLER SMARTSLEEP SHDN ACTIVE VIDEO DETECT 6dB CURRENT DAC CVBSIN BUFFER EXTCVBSIN CLAMP OFF 0.1F GND LPF LOAD SENSE 6dB CVBSOUT2 75 Y/C SEPARATION CONTROL LOGIC
+3.3V
LOAD SENSE CVBSOUT1 75 CVBS1
Figure 7. Internal Mode Operation for Portable DVD Application
16
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CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
MAX9513
+3.3V
0.1F 4.3mA PLUS LOAD CURRENT VDD DVD CHIP LOGICHIGH INT/EXT
MAX9513
MICROCONTROLLER +3.3V SMARTSLEEP +3.3V SHDN ACTIVE VIDEO DETECT 6dB CURRENT DAC CVBSIN BUFFER EXTCVBSIN CLAMP 0.1F 6dB LPF LOAD SENSE CVBSOUT2 75 TO Y/C SEPARATION OFF CONTROL LOGIC
LOAD SENSE OFF CVBSOUT1 75 CVBSIN 75 VIDEO SOURCE
GND
Figure 8. External Mode Operation for Portable DVD Application
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17
CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
MAX9513
Inputs
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 0.1F 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.
Shutdown
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 28k, due to the internal feedback resistors to ground.
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 300. 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 37.5, the DAC must source 26.7mA when the output is 1V. If the output resistor is increased to 300, 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, 300 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.
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.
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 220F or greater to keep the highpass filter formed by the 150 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.
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.
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 0.1F capacitor. Place all external components as close as possible to the device.
18
______________________________________________________________________________________
CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
MAX9513
+3.3V
0.1F VDD
INT/EXT
MAX9513
SMARTSLEEP SHDN ACTIVE VIDEO DETECT 6dB CURRENT DAC CVBSIN BUFFER EXTCVBSIN OFF CLAMP 6dB LPF LOAD SENSE CVBSOUT2 75 CVBS2 220F GND LOAD SENSE CVBSOUT1 75 CVBS1 220F CONTROL LOGIC
+3.3V
Figure 9. AC-Coupled Outputs
______________________________________________________________________________________
19
CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
MAX9513
Pin Configuration
CVBSOUT1 10
TOP VIEW
12 VDD 13 INT/EXT 14 SMARTSLEEP 15 GND 16 N.C. 11 N.C.
CVBSOUT2 9 8 7 GND N.C. SHDN EXTCVBSIN 6 5 4 CVBSIN
MAX9513
+
1 VDD 2 GND 300mV TO 400mV CVBSOUT1 3 GND
THIN QFN (3mm x 3mm)
Block Diagrams (continued)
INT/EXT
MAX9513
SMARTSLEEP SHDN LOAD SENSE 0 TO 50mV CVBSIN BUFFER LPF EXTCVBSIN CLAMP 6dB LOAD SENSE CVBSOUT2 ACTIVE VIDEO DETECT 6dB CONTROL LOGIC
Chip Information
PROCESS: BiCMOS
20 ______________________________________________________________________________________
CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
Package Information
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. PACKAGE TYPE 16 TQFN-EP PACKAGE CODE T1633-4 DOCUMENT NO. 21-0136
MAX9513
MARKING
E E/2
(ND - 1) X e
(NE - 1) X e
D2/2
D/2 D
AAAA
C L
e D2
k
b E2/2
0.10 M C A B
C L
L
E2
0.10 C
0.08 C A A2 A1 L
C L
C L
L
e
e
PACKAGE OUTLINE 8, 12, 16L THIN QFN, 3x3x0.8mm
21-0136
I
1 2
______________________________________________________________________________________
21
12x16L QFN THIN.EPS
CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
MAX9513
Package Information (continued)
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
PKG REF. A b D E e L N ND NE A1 A2 k 0.25 0 0.35
8L 3x3 MIN. NOM. MAX. 0.70 0.25 2.90 2.90 0.75 0.30 3.00 3.00 0.55 8 2 2 0.02 0.20 REF 0.25 0.05 0 0.80 0.35 3.10 3.10 0.75
12L 3x3 MIN. NOM. MAX. 0.70 0.20 2.90 2.90 0.45 0.75 0.25 3.00 3.00 0.50 BSC. 0.55 12 3 3 0.02 0.20 REF 0.25 0.05 0 0.65 0.30 0.80 0.30 3.10 3.10
16L 3x3 MIN. NOM. MAX. 0.70 0.20 2.90 2.90 0.75 0.25 3.00 3.00 0.40 16 4 4 0.02 0.20 REF 0.05 0.80 0.30 3.10 3.10 0.50 PKG. CODES TQ833-1 T1233-1 T1233-3 T1233-4 T1633-2 T1633F-3 T1633FH-3 T1633-4 T1633-5
EXPOSED PAD VARIATIONS
D2 MIN. 0.25 0.95 0.95 0.95 0.95 0.65 0.65 0.95 0.95 NOM. 0.70 1.10 1.10 1.10 1.10 0.80 0.80 1.10 1.10 MAX. 1.25 1.25 1.25 1.25 1.25 0.95 0.95 1.25 1.25 MIN. 0.25 0.95 0.95 0.95 0.95 0.65 0.65 0.95 0.95 E2 NOM. 0.70 1.10 1.10 1.10 1.10 0.80 0.80 1.10 1.10 MAX. 1.25 1.25 1.25 1.25 1.25 0.95 0.95 1.25 1.25 PIN ID 0.35 x 45 0.35 x 45 0.35 x 45 0.35 x 45 0.35 x 45 0.225 x 45 0.225 x 45 0.35 x 45 0.35 x 45 JEDEC WEEC WEED-1 WEED-1 WEED-1 WEED-2 WEED-2 WEED-2 WEED-2 WEED-2
0.65 BSC.
0.50 BSC.
NOTES: 1. 2. 3. 4. 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.
5. 6. 7. 8. 9. 10. 11. 12.
PACKAGE OUTLINE 8, 12, 16L THIN QFN, 3x3x0.8mm
21-0136
I
2 2
22
______________________________________________________________________________________
CVBS Video Filter Amplifier with SmartSleep and Bidirectional Video Support
Revision History
REVISION NUMBER 0 1 REVISION DATE 7/06 2/09 Initial release Removed QSOP package DESCRIPTION PAGES CHANGED -- 1, 2, 9, 20
MAX9513
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
(c) 2009 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
M. Quijanoy

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