ADA4424 AD [Analog Devices], ADA4424 Datasheet
ADA4424
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ADA4424 Summary of contents
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... V below ground, eliminating the need for large coupling capacitors. Each output is capable of driving two 75 Ω doubly terminated cables. The ADA4424-6 is available in a 38-lead TSSOP and operates in the industrial temperature range of −40°C to +85°C. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. ...
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... ADA4424-6 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 6 Thermal Resistance ...................................................................... 6 Maximum Power Dissipation ..................................................... 6 ESD Caution .................................................................................. 6 Pin Configuration and Function Descriptions ............................. 7 REVISION HISTORY 07/10—Rev Rev. C Change to General Description Section ........................................ 1 05/10—Rev Rev. B Change to Table 1, Overall Performance ....................................... 3 Change to Ordering Guide ............................................................ 15 12/09— ...
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... MHz, unweighted f = 100 kHz to 30 MHz Both active, SD_ENABLE = high, HD_ENABLE = high, no load, no signal, not including D/S terminal outputs SD disabled, SD_ENABLE = low, HD_ENABLE = high HD disabled, SD_ENABLE = high, HD_ENABLE = low Both disabled, SD_ENABLE = low, HD_ENABLE = low Rev Page ADA4424-6 Min Typ Max Unit 6.0 6.2 6.4 dB − ...
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... ADA4424-6 Parameter Quiescent Supply Current Supply PSRR DC Offset Input Referred, Offset Cancellation Disabled Mode SD Channels CVBS Channel ED/HD Channels Input Referred, Fixed Offset Cancellation Mode SD Fixed High Offset Mode ED/HD Fixed High Offset Mode SD Fixed Low Offset Mode ED/HD Fixed Low Offset Mode ...
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... Output Ripple Frequency Test Conditions/Comments 100 kΩ mid or open DD5 5 100 kΩ high DD5 L All channels operating 4.7 μ 1.0 μ Ω (see Figure 18) Rev Page ADA4424-6 Min Typ Max Unit 2.1 V 4.5 V −1.66 V 180 mV p-p 100 kHz ...
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... Even temporarily exceeding this temperature limit can change the stresses that the package exerts on the die, permanently shifting the parametric performance of the ADA4424-6. Exceeding a junction temperature of 150°C for an extended time can result in changes in the silicon devices, potentially causing failure. ...
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... Scale) C_IN 9 30 C_OUT GND3 GND3 10 29 HY_IN 11 28 HY_OUT FC_SEL 12 27 VSS_HD HPb_IN 13 26 HPb_OUT HPr_IN 14 25 HPr_OUT HD_ENABLE 15 24 VDD3_HD MODE0 23 MODE1 16 OFFSET_ENB 22 C2/CP_OUT 17 VDD3_CP 18 21 C1b C1a GND_CP 19 20 Figure 3. Pin Configuration, Top View Rev Page ADA4424-6 ...
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... ADA4424-6 Pin No. Mnemonic Description 32 VSS_SD Negative Supply Pin for SD Filter Section. This pin should be connected to the charge pump output (Pin 22), as shown in Figure 18. 33 Y_OUT SD Luma (Y) Output. 34 S1/S2_OUT S-Terminal Aspect Ratio Selection Output. 35 L3_OUT D-Terminal Aspect Ratio Selection Output. 36 L2_OUT D-Terminal Scan Selection Output. ...
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... HY Pb –1.0 100 1k 0.1 0.5 0 –0 –1.0 100 1k 0.1 Figure 9. Frequency Response Peaking—HD Channels Rev Page ADA4424-6 C Y/CVBS 1 10 FREQUENCY (MHz) Figure 7. Frequency Response Peaking—SD Channels FREQUENCY (MHz) Figure 8. Frequency Response Peaking—ED Channels HY Pb/ FREQUENCY (MHz) ...
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... ADA4424-6 –20 ALL HOSTILE REFERRED TO INPUT –30 –40 –50 C_OUT –60 Y_OUT –70 CVBS_OUT –80 0.1 1 FREQUENCY (MHz) Figure 10. Crosstalk—SD Channels CVBS_OUT 30 25 Y_OUT, C_OUT 0.1 1 FREQUENCY (MHz) Figure 11. Group Delay—SD Channels 0.1 1 FREQUENCY (MHz) Figure 12. Group Delay— ...
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... The net signal gain through the composite video path is, therefore, 0 dB, and the resulting composite signal present at the ADA4424-6 output is the sum of Y and C with unity gain. CORNER FREQUENCY SELECTION The component channels of the ADA4424-6 allow for filter corner frequency of either 25 MHz or 39 MHz/34 MHz ...
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... ADA4424-6 Fixed Offset Cancellation Mode In addition to the automatic mode, there are two levels of fixed offset correction available. In high offset mode, fixed voltages of 1.0 V and 1.1 V are subtracted from the Y_IN and HY_IN inputs, respectively. In low offset mode, a fixed voltage of 0. subtracted from both Y_IN and HY_IN. The various modes of offset cancellation are outlined in Table 6 ...
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... A solid ground plane is recommended, and surface-mount, ceramic power supply decoupling capacitors should be placed as close as possible to the supply pins. Connect all of the ADA4424-6 GND pins to the ground plane with traces that are as short as possible. Controlled impedance traces of the shortest length possible should be used to connect to the signal I/O pins and should not pass over any voids in the ground plane Ω ...
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... ADA4424-6 +3.3V + 10µF VIDEO ENCODER DAC1 DAC2 DAC3 DAC4 DAC5 RSET1 RSET2 +3.3V Figure 18. Typical Application Diagram for Using the ADA4424-6 in Auto Offset Cancellation Mode OFFSET_ENB ADA4424-6 MODE0 MODE1 Y_IN x1 LPF 100nF C_IN x1 LPF SD_ENABLE VDD3_SD 1.0µF HY_IN x1 LPF HPb_IN x1 LPF 1.0µF HPr_IN ...
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... Figure 19. 38-Lead Thin Shrink Small Outline Package [TSSOP] (RU-38) Dimensions shown in millimeters Package Description 38-Lead Thin Shrink Small Outline Package (TSSOP) 38-Lead Thin Shrink Small Outline Package (TSSOP) 38-Lead Thin Shrink Small Outline Package (TSSOP) Rev Page 6.40 BSC 8° 0° 0.70 0.60 0.45 Package Option RU-38 RU-38 RU-38 ADA4424-6 Ordering Quantity 50 1,000 2,500 ...
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... ADA4424-6 NOTES ©2009-2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D08550-0-7/10(C) Rev Page ...