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ANALOG DEVICES ADD8709 handbook

1. 20 Isk 25 sink 15mA 15 Isink 5mA lt 10 5 x o o 0 x s OMA s 5 10 5 5 gt 15 gt 5 20 a 2 2 25 Isource 25mA 30 E Isource 15mA Iso nce 5mA 20 10 0 10 20 30 40 50 60 70 80 90 100 110 120 10 100 TEMPERATURE LOAD CURRENT mA Figure 3 Output Voltage Error vs Temperature Figure 6 Output Voltage Error vs Load Current Channels 3 and 9 25 20 CH1 SOURCE S 15 ui sink CH2 SOURCE a a CH2 SINK 10 gt gt 5 5 2 CH18 SINK y E Z E o Z o 5 224 5 0 1 1 10 100 0 1 1 10 100 LOAD CURRENT mA LOAD CURRENT mA Figure 4 Output Voltage Error vs Load Current Channels 17 and 18 Figure 7 Output Voltage Error vs Load Current Channels 1 and 2 1000 900 5 800 m tc E i 600 lt 500 t 400 gt m E 300 gt a 200 8 100 8 CH16 SINK z a L L 0 0 1 1 10 100 0 30 0 18 0 10 0 02 0 06 0 14 0 22 0 30 LOAD CURRENT mA GAMMA OUTPUT ERROR DUE TO OFFSET OF FS Figure 5 Output Voltage Error vs Load Current Channels 10 and 16 Figure 8 Gamma Output Voltage Error Rev A Page 7 of
2. can be calculated by Ppis Vpp X X Iour x Voo Vourx X Iourxc x Vourx Vpp VREG our x Itoap where x nominal system power requirements Tour xt X Vourx positive current amplifier load power dissipation current comes from lovxrc X Vourx negative current amplifier load power dissipation current goes to GND Voo X regulator load power dissipation Example 1 To calculate an estimated power consumption of the ADD8709 assume Vpp Ing 16 V x 15 mA 0 240 W Vpop Vans ovr x 16 V 14 4 V x 5 mA 0 008 W Rev A Page 10 of 16 0 8709 Table 5 0 240 W 0 731 W 0 008 W 0 979 W Vourx V lourx mA P W Vour18 14 400 43 0 00688 Sas Vour17 11 405 5 2 0 0239 Ty 45 74 57 C W x 0 979 W 118 0 C Vour16 10 627 44 0 0468 Vour15 10 397 73 0 0409 150 is the maximum junction temperature that is Vour14 10 195 76 0 0441 guaranteed before the part breaks down while 125 C is the Vour13 10 080 239 0 0393 maximum process limit Because is lt 150 C and lt 125 C Vourl2 9 821 83 0 0513 this example demonstrates a condition where the part should Vourl1 9 130 79 0 0543 perform within process limits Vour10 8 611 4 5 0 0389 Vour9 6 480 4 2 0 0272 Vour8 6 077 5 6 0 0556 Vour7 5 098 3 3 0 0168 Vour6 4 810 6 9 0 0332 Vour5 4 694 5 7 0 0644 Vo
3. 16 ADD8709 AMPLITUDE V 10V PULSE 120pF 320pF 520pF 1inF 10nF 04715 008 0 200 0 200 400 600 800 1000 1200 1400 1600 1800 TIME ns Figure 9 Gamma Buffers Load Transient Response vs Capacitive Loading OUTPUT VOLTAGE V DROPOUT VOLTAGE mV O mco Q DN DO 17 16 15 14 13 1211109 8 7 6 5 4 3 2 1 0 INPUT VOLTAGE V Figure 10 Dropout Characteristics 0123 45 6 7 8 9 1011 1213 14 15 16 17 18 19 20 OUTPUT CURRENT mA Figure 11 Dropout Voltage vs Output Current 04715 011 04715 012 Rev A Page 8 of 16 800 750 700 650 600 550 500 450 400 350 300 250 200 150 100 50 10mA 5mA DROPOUT VOLTAGE mV 04715 013 0 25 15 5 5 15 25 35 45 55 65 75 85 95 105 115 TEMPERATURE Figure 12 Voltage vs Temperature REGULATOR OUTPUT V 04715 014 0 2 4 6 8 10 12 14 16 18 20 LOAD CURRENT mA Figure 13 Regulator Output vs loan over Temperature REGULATOR OUTPUT V 04715 015 14 20 20 10 0 10 20 30 40 50 60 70 80 90 100 110 TEMPERATURE Figure 14 Regulator Output vs Temperature INPUT VOLTAGE V LOAD CURRENT mA 1
4. 8 Cioap 1uF 17 16 I OUTPUT VOLTAGE CHANGE mV l 2 15 14 TIME 100us DIV Figure 15 Regulator Line Transient Response Ci oap du F e OUTPUT VOLTAGE CHANGE mV TIME 100us DIV Figure 16 Regulator Load Transient Response 04715 016 04715 017 Rev A Page 9 of 16 SUPPLY CURRENT mA SUPPLY CURRENT mA zs ADD8709 Q O 2 4 6 8 10 12 14 SUPPLY VOLTAGE V Figure 17 Supply Current vs Supply Voltage 04715 018 0 20 40 60 80 TEMPERATURE C Figure 18 Supply Current vs Temperature 100 04715 019 120 ADD8709 APPLICATION NOTES The ADD8709 is a gamma reference generator that allows source drivers to be optimized for the different combinations of liquid crystals glass sizes etc in large LCD panels In a typical panel application the selected source drivers have an internal gamma curve that is not ideal for the specific panel as shown in Figure 19 The ADD8709 allows the gamma curve in the source drivers to be adjusted appropriately and also ensures that all of the source drivers have the same gamma curve S MR s i ae ORIGINAL GAMMA CURVE SS IN SOURCE DRIVERS PANEL GAMMA CURVE CORRECTED BY ADD8709 GAMMA VOLTAGE V 04715 020 GAMMA REFERENCE INPUT POINTS Figure 19 Original
5. ANALOQ DEVICES FEATURES 18 precision gamma reference outputs Mask programmable voltage regulator 0 496 accuracy Upper 9 buffers swing to Voo Lower 9 buffers swing to GND Single supply operation 7 5 V to 16 5 V Gamma current drive 15 mA per channel Peak output current 150 mA Output voltage stable under load conditions 48 lead Pb free LOFP package APPLICATIONS LCD TV panels LCD monitor panels GENERAL DESCRIPTION The ADD8709 is an 18 channel integrated gamma reference for use in LCD TV and monitors panels The output buffers feature high current drive and low offset voltage to provide an accurate and stable gamma curve The top nine channels swing to and the lower nine channels swing to GND An on board voltage regulator provides a fixed input for the gamma buffers isolating the gamma curve from supply ripple The ADD8709 is specified over the temperature range of 40 C to 105 C and comes in a 48 lead Pb free low profile quad flat package Rev A Information furnished by Analog Devices is believed to be accurate and reliable However no responsibility is assumed by Analog Devices for its use nor for any infringements of patents or other rights of third parties that may result from its use Specifications subject to change without notice No license is granted by implication or otherwise under any patent or patent rights of Analog Devices Trademarks and registered trademarks are the property of their resp
6. and Corrected Gamma Curves The ADD8709 also includes a low dropout linear regulator to provide a stable reference level for the gamma curve for best panel performance VOLTAGE REGULATOR The on board voltage regulator provides a regulated voltage to the external resistors to set different gamma voltages The output of the regulator is set by the two resistors Ri and and an internal reference voltage of 1 2V In the ADD8709 Ri and R are external components The output voltage can is found by Vrecour 1 R2 KQ 55 5kQ VREG OUT VREF t 3 12V T Figure 20 Voltage Regulator MAXIMUM POWER DISSIPATION The maximum safe power dissipation in the ADD8709 package is limited by the associated rise in junction temperature on the die At approximately 150 C the glass transition temper ature the properties of the plastic change Even temporarily exceeding this temperature limit may change the stresses that the package exerts on the die permanently shifting the para metric performance of the ADD8709 Exceeding a junction temperature of 175 C for an extended period can result in changes in the silicon devices potentially causing failure OPERATING TEMPERATURE RANGE The junction temperature is Ty Tams Oya Pois where Tams ambient temperature junction to ambient thermal resistance in C watt Ppis power dissipated in the device watts For the ADD8709
7. e reference 2 GND Ground Normally 0 V 3 Vop Supply voltage Normally 16 V 4 REGour Regulator output voltage Provides a regulated output voltage for use as a reference for the gamma resistors 5 Vin18 6 Vin17 7 Vin16 8 Vin15 9 Vin14 10 Vin13 11 Vin12 12 Vin11 13 Vin10 Vind Buffer inputs An external resistor calculator is available upon request from your local sales office 15 Vin8 16 Vin7 17 Vin6 18 Vin5 19 Vin4 20 Vin3 21 Vin2 22 Vin1 23 GND Ground Normally 0 V 24 Vpp Supply voltage Normally 16 V eo rou Buffer outputs These buffers can swing to ground 26 Vour2 Rev A Page 5 of 16 ADD8709 Pin No Name Description 27 Vour3 28 Buffer outputs These buffers swing to ground 29 Vour5 30 Vour6 31 GND Ground Normally 0 V 32 Vpp Supply voltage Normally 16 V 33 Vour7 34 Vour8 Buffer outputs These buffers can swing to ground 35 Vour9 36 Vour10 37 Vour11 Buffer outputs These buffers can swing to 38 Vour12 39 GND Ground Normally 0 V 40 Vpp Supply Voltage Normally 16V 41 Vour13 42 Vour14 M Buffer outputs These buffers can swing to Vpp 44 Vour16 45 Vour17 46 Vour18 47 GND Ground Normally 0 V 48 Vpp Supply voltage Normally 16 V Rev A Page 6 of 16 0 8709 TYPICAL PERFORMANCE CHARACTERISTICS
8. ective owners 18 Channel Gamma Buffer with Regulator ADD8709 FUNCTIONAL BLOCK DIAGRAM 7000 O VREG our O Vin18 Vint7 Vin16 Vint5 14 VIN13 VIN12 ViN11 VIN10 ViN9 Vin8 Vin7 5 Vin4 Vin3 Vin2 Vint ESD PROTECTION RESISTORS GND GND GAMMA BUFFERS O Vour18 7000 VV O Vour17 7000 O 16 I 7000 Q 15 7000 1 14 7000 Q Vour13 700071 O 12 7000 11 700071 Q 10 1 7000 Vout 1 7000 1 Vour8 1 7000 Q Vour 1 700071 Q 7000 QO 5 700071 4 7000 Vour3 700071 Q 2 1 1 7000 Vout 04715 001 Figure 1 48 Lead LQFP One Technology Way P O Box 9106 Norwood MA 02062 9106 U S A Tel 781 329 4700 Fax 781 326 8703 www analog com 2004 Analog Devices Inc All rights reserved ADD8709 TABLE OF CONTENTS Electrical Characteristics seen 3 Absolute Maximum Ratings seen 4 ESD Ca tionz iiti i iios 4 Pin Configuration and Function 5 5 Typical Performance Characteristics 2 22 7 Application Notes retis 10 Voltage Regulator itat tete its 10 Maximum Power Dissipation sse 10 Operating Temperat
9. eration of the device at these or any Storage Temperature Range 65 C to 150 C other conditions above those indicated in the operational Operating Temperature Range 40 to 105 sections of this specification is not implied Exposure to Junction Temperature Range 65 C to 150 C absolute maximum rating conditions for extended periods Lead Temperature Range Soldering 60 sec 300 C may affect device reliability ESD Tolerance HBM 2000 V ESD Tolerance MM 150 V Table 3 Package Characteristics Package Type Unit LQFP ST 74 57 C W 1 See Application Notes section ESD CAUTION ESD electrostatic discharge sensitive device Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection Although this product features WARNING proprietary ESD protection circuitry permanent damage may occur on devices subjected to high energy Sprit Athe electrostatic discharges Therefore proper ESD precautions are recommended to avoid performance ESD SENSITIVE DEVICE degradation or loss of functionality Rev A Page 4 of 16 ADD8709 ADD8709 TOP VIEW Not to Scale 04715 002 Figure 2 48 Lead Low Profile Quad Flat Package ST 48 Table 4 Pin Function Descriptions Pin No Name Description 1 REGrs Regulator feedback Compares a percentage of the regulator output to the internal 1 2 V voltag
10. ge Option ADD8709ASTZ REEL 40 C to 100 48 Lead Low Profile Quad Flat Package ST 48 ADD8709ASTZ REEL7 3 40 C to 100 C 48 Lead Low Profile Quad Flat Package ST 48 ADD8709WSTZ REEL 40 C to 105 C 48 Lead Low Profile Quad Flat Package ST 48 ADD8709WSTZ REEL7 40 C to 105 C 48 Lead Low Profile Quad Flat Package ST 48 1 Available in reels only 27 Pb free part 3 WARNING Not to be used in new design Option for existing designs only Rev A Page 13 of 16 ADD8709 NOTES Rev A Page 14 of 16 ADD8709 NOTES Rev A Page 15 of 16 ADD8709 NOTES 2004 Analog Devices Inc All rights reserved Trademarks and ANALOG registered trademarks are the property of their respective owners www analo g com Lal DEVICES Rev A Page 16 of 16
11. lt 105 C 0 5 1 5 uA Input Voltage Range Ch18 to Ch10 Vin 1 4 V Input Voltage Range Ch9 to Ch1 Vin 0 Voo 1 4 V DYNAMIC PERFORMANCE Slew Rate SR R 10 kO C 200 pF 4 6 V us Bandwidth BW 3 dB R 10 kO C 200 pF 4 5 MHz Settling Time to 0 196 ts 1 V step R 10 200 pF 1 1 us Phase Margin Do Ri C 200 pF 55 Degrees Power Supply Rejection Ratio PSRR Voo 7 V to 17 V 40 C lt Ta lt 105 C 68 90 dB VOLTAGE REGULATOR Programmable Range VREG ouT 5 Voo 0 6 V Initial Regulator Accuracy No load Veec out 14 4 V 0 4 1 5 96 Dropout Voltage Voo IL 100 pA 100 150 mV L 5mA 310 350 mV Line Regulation REGuwE Vin 8 5 V to 16 5 V 8 V 0 01 0 20 Load Regulation REGio4D lo 100 pA to 10 mA 0 02 0 10 mA Maximum Load Current lo 40 C lt Ta lt 105 C 5 mA Feedback Reference Voltage VREF 1 2 V Feedback Input Bias Current lera 40 C lt Ta 105 C 150 10 150 POWER SUPPLY Supply Voltage Vs 7 5 16 5 V Supply Current Isy No load 40 C lt Ta lt 105 C 105 17 mA 1 AVour is the shift from the desired output voltage under the specified current load Rev A Page 3 of 16 ADD8709 ABSOLUTE MAXIMUM RATINGS Table 2 Parameter Rating Stresses above those listed under Absolute Maximum Ratings Supply Voltage Vor 18V may cause permanent damage to the device This is a stress Input Voltage 0 5 V to Voo rating only functional op
12. ur4 4 435 3 5 0 0405 Vour3 4 205 9 6 0 113 Vour2 3 398 9 5 0 0323 Vour1 0 202 7 2 0 00145 gt lourx X Vourx X lourxt X Vourx 0 731 Rev A Page 11 of 16 ADD8709 TYPICAL APPLICATIONS CIRCUIT Vop 16V VOLTAGE REGULATOR 55kQ Vi GAMMA REG OUT BUFFERS 0 1uF T 00 i L Vouri8 14 400V 1 O MSS Q Q Q Q 1 1 2700 bos 1 A 170005101 gt Vour12 1 HS 11 OUT O 7 i O 9409 17000 1 Vour10 8 611V 1 OUT O gt 1 O EXTERNAL 222kQ i MES RESISTORS Vind 7000 Vour9 TO SET O GAMMA VOLTAGES 4200 1 17000 Vour8 Q lt z V 1 7000 1 1 02kO Vour 1 3000 17000 gt o 1 1 Vour amp NZ I 7000 I 1200 z a 5 2700 1 17000 Vour4 V 1 17000 Vour3 I C L 1 1 17000 Vour2 3 398V 17000 1 2400 1 E z lt z E 8400 3 33kO z z _ O 2100 ESD PROTECTION RESISTORS Figure 21 Typical Applications Circuit Rev A Page 12 of 16 04715 022 OUTLINE DIMENSIONS VIEW ROTATED 90 CCW TOP VIEW PINS DOWN VIEW A 050 0 27 BSC 0 22 LEAD PITCH 0 1 COMPLIANT TO JEDEC STANDARDS MS 026BBC Figure 22 48 Lead Low Profile Quad Flat Package LOFP ST 48 Dimensions shown in millimeters ADD8709 ORDERING GUIDE Model Temperature Range Package Description Packa
13. ure Range sse 10 Typical Applications Circuit sse 12 Outline Dimensions eene 13 Ordering Guilde isset tpe i e n Pee 13 REVISION HISTORY 10 04 Data Sheet Changed from Rev 0 to Rev A Changes to Product Overview Section sss 1 Changes to Fig re 1 etre teeth 1 Changes to Electrical Characteristics Section 3 Changes to Absolute Maximum Ratings 4 Changes to Pin Configuration and Function Description 5 Changes to Typical Performance Characteristics Section 7 Changes to Applications Notes Section sss 10 Changes to Figure 28 Typical Applications Circuit 12 Changes to Ordering Guide sees 13 8 04 Revision 0 Initial Version Rev A Page 2 of 16 ELECTRICAL CHARACTERISTICS Vpp 16 V Ta 25 C unless otherwise noted ADD8709 Table 1 Parameter Symbol Conditions Min Typ Max Unit BUFFER CHARACTERISTICS OUTPUTS Output Voltage Range Ch18 to Ch10 Vour IL 100 pA 1 4 V Output Voltage Range Ch9 to Ch1 Vour IL 100 pA 0 Voo 1 4 V Output vs Load Ch18 Ch17 Ch2 Ch1 AVour 20 mA 15 mV Output vs Load Ch16 to Ch3 AVour IL 5mA 5 mV INPUTS Offset Voltage Vos 5 15 mV Offset Voltage Drift AVos AT 40 C lt TA 105 C 20 Input Bias Current 40 C lt

ANALOG DEVICES ADD8709 handbook

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