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4-, 5-, 6-Channel, Muxed Input Line Inversion LCD Gamma Buffers ADD8504/ADD8505/ADD8506
FEATURES
Single-supply operation: 3.3 V to 6.5 V Rail-to-rail input, rail-to-rail output High output current: 380 mA Low supply current: 3.9 mA Stable with 1 nF loads Wide temperature range: -40C to +105C 16-, 20-, and 24-lead, Pb-free, TSSOP packages
PIN CONFIGURATION DIAGRAMS
INA1 1 INB1 2 INA2 3 INB2 4 INA3 5 INB3 6 INA4 7 INB4 8
16 15 14 13 12 11 10 9
OUT1 OUT2 VCC1 A/B GND GND
05549-001 05549-003 05549-002
OUT3 OUT4
APPLICATIONS
LCD line inversion gamma references Car navigation panels Personal media player panels
INA1 1 INB1 2 INA2 3
20 VCC1 19 OUT1 18 OUT2 17 OUT3 16 VCC2 15 A/B 14 GND 13 GND 12 OUT4 11 OUT5
Figure 1. ADD8504: 4-Channel Buffer
GENERAL DESCRIPTION
The ADD8504, ADD8505, and ADD8506 are 4-, 5-, and 6-channel LCD gamma reference buffers designed to drive column driver gamma inputs in line inversion panels. Each buffer channel has an A/B input to select between two gamma voltage curves. These buffer channels drive the resistor ladders of LCD column drivers for gamma correction. The ADD8504/ ADD8505/ADD8506 outputs have high slew rates and output drives that increase the stability of the reference ladder resulting in optimal gray scale and visual performance. The ADD8504/ADD8505/ADD8506 are specified over the -40C to +105C temperature range. They are available, respectively, in 16-, 20-, and 24-lead thin shrink small outline (TSSOP), surface-mount, Pb-free packages.
INB2 4 INA3 5 INB3 6 INA4 7 INB4 8 INA5 9 INB5 10
Figure 2. ADD8505: 5-Channel Buffer
INA1 1 INB1 2 INA2 3 INB2 4 INA3 5 INB3 6 INA4 7 INB4 8 INA5 9 INB5 10 INA6 11 INB6 12
24 VCC1 23 OUT1 22 OUT2 21 OUT3 20 VCC2 19 A/B 18 GND 17 GND 16 OUT4 15 OUT5 14 OUT6 13 VCC3
Figure 3. ADD8506: 6-Channel Buffer
Rev. B
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 respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 (c)2006 Analog Devices, Inc. All rights reserved.
ADD8504/ADD8505/ADD8506 TABLE OF CONTENTS
Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Pin Configuration Diagrams........................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Electrical Characteristics............................................................. 3 Absolute Maximum Ratings............................................................ 4 Thermal Resistance .......................................................................4 ESD Performance ..........................................................................4 ESD Caution...................................................................................4 Pin Configurations and Function Descriptions ............................5 Typical Performance Characteristics ..............................................6 Applications........................................................................................7 Outline Dimensions ..........................................................................8 Ordering Guide .............................................................................8
REVISION HISTORY
1/06--Rev. A to Rev. B Added Pin Configurations and Function Descriptions Section ........................................................................ 5 Added Table 5.................................................................................... 8 10/05--Rev. 0 to Rev. A Added ADD8504 and ADD8505......................................Universal Changes to Specifications Section.................................................. 3 Updated Outline Dimensions ......................................................... 7 Changes to Ordering Guide ............................................................ 7 9/05--Revision 0: Initial Version
Rev. B | Page 2 of 8
ADD8504/ADD8505/ADD8506 SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
VCC = 5 V, TA = 25C, unless otherwise noted. VIN denotes buffer input voltage; ILOAD denotes load current; RL denotes load resistance; CL denotes load capacitance. Table 1.
Parameter INPUT CHARACTERISTICS Offset Voltage Input Common-Mode Voltage Range Input Bias Current Voltage Gain OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Output Resistance Output Short-Circuit Current POWER SUPPLY Supply Current ADD8504 ADD8505 ADD8506 Supply Voltage Range DYNAMIC PERFORMANCE Slew Rate Settling Time LOGIC INPUT CHARACTERISTICS Input Current Low Input Current High Input Voltage Low Input Voltage Low Input Voltage High Input Voltage High Symbol VOS VCM IB AVO VOH VOL ROUT ISC ISY Conditions 0 V VIN 5 V 0 VIN = 2.5 V 0.985 ILOAD = +20 mA ILOAD = -20 mA -20 mA ILOAD +20 mA; 0.5 V VIN 4.5 V 4.75 0.2 120 VIN = 2.5 V 2.7 3.0 3.9 VCC SR tS IIL IIH VIL VIL VIH VIH CL = 15 pF RL = 250 CL = 200 pF, RL = 10 k VIN = 0.0 V VIN = 5.0 V VCC = 5.0 V, -40C TA 105C VCC = 3.3 V, -40C TA 105C VCC = 5.0 V, -40C TA 105C VCC = 3.3 V, -40C TA 105C 3.3 7.0 6.2 2.5 3.8 4.4 5.1 6.5 mA mA mA V V/s V/s s nA nA V V V V 0.20 380 2 Min Typ Max 20 5 50 Unit mV V nA V/V V V mA
6 100 100 0.8 0.7
1.7 1.4
Rev. B | Page 3 of 8
ADD8504/ADD8505/ADD8506 ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter Supply Voltage Input Voltage Storage Temperature Range Junction Temperature Range Lead Temperature (Soldering, 60 sec) Rating 7V GND to VCC -65C to +150C -65C to +150C 300C
THERMAL RESISTANCE
Table 3. Thermal Package Characteristics
Model ADD8504WRUZ ADD8505WRUZ ADD8506WRUZ
1 2
Package Type 16-Lead Pb-Free TSSOP 20-Lead Pb-Free TSSOP 24-Lead Pb-Free TSSOP
JA1 150 143 128
JC2 28 45 45
Unit C/W C/W C/W
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
JA is specified for natural convection on a two-layer board. JC is specified for natural convection on a two-layer board.
ESD PERFORMANCE
Table 4.
Model ADD8504WRUZ ADD8505WRUZ ADD8506WRUZ
1 2 3
HBM 1 4.0 kV 3.5 kV 3.5 kV
MM 2 400 V 200 V 200 V
FICDM 3 1.0 kV 1.0 kV 1.0 kV
Human body model. Machine model. Field induced charge device model.
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 proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
Rev. B | Page 4 of 8
ADD8504/ADD8505/ADD8506 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
INA1 1 INB1 2 INA2 3 INB2 4 INA3 5 INB3 6 INA4 7 INB4 8 INA5 9 INB5 10 INA6 11 INB6 12
24 VCC1 23 OUT1 22 OUT2 21 OUT3 20 VCC2 19 A/B 18 GND 17 GND 16 OUT4 15 OUT5
05549-003
INA1 1 INB1 2 INA2 3 INB2 4 INA3 5 INB3 6 INA4 7 INB4 8 INA5 9 INB5 10
20 19 18 17 16 15 14 13 12 11
VCC1 OUT1 OUT2 OUT3 VCC2 A/B GND GND
05549-002
INA1 1 INB1 2 INA2 3 INB2 4 INA3 5 INB3 6 INA4 7 INB4 8
16 15 14 13 12 11 10 9
OUT1 OUT2 VCC1 A/B GND GND
05549-001
14 OUT6 13 VCC3
OUT4 OUT5
OUT3 OUT4
Figure 4. ADD8506 6-Channel Buffer
Figure 5. ADD8505 5-Channel Buffer
Figure 6. ADD8504 4-Channel Buffer
Table 5. Pin Function Descriptions
ADD8506 Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17, 18 19 20 21 22 23 24 ADD8505 Pin No. 1 2 3 4 5 6 7 8 9 10 N/A N/A N/A N/A 11 12 13, 14 15 16 17 18 19 20 ADD8504 Pin No. 1 2 3 4 5 6 7 8 N/A N/A N/A N/A N/A N/A N/A 9 11, 12 13 N/A 10 15 16 14 Mnemonic INA1 INB1 INA2 INB2 INA3 INB3 INA4 INB4 INA5 INB5 INA6 INB6 VCC3 OUT6 OUT5 OUT4 GND A/B VCC2 OUT3 OUT2 OUT1 VCC1 Function Input Input Input Input Input Input Input Input Input Input Input Input Power In Output Output Output Ground Input Power In Output Output Output Power In Description Channel 1 Buffer Input A. Channel 1 Buffer Input B. Channel 2 Buffer Input A. Channel 2 Buffer Input B. Channel 3 Buffer Input A. Channel 3 Buffer Input B. Channel 4 Buffer Input A. Channel 4 Buffer Input B. Channel 5 Buffer Input A. Channel 5 Buffer Input B. Channel 6 Buffer Input A. Channel 6 Buffer Input B. Power Supply Input. Short to VCC1 and VCC2. Typically connected to +5 V. Channel 6 Buffer Output. Channel 5 Buffer Output. Channel 4 Buffer Output. Ground. Switch Control. Logic high selects Input A; logic low selects Input B. Power Supply Input. Short to VCC1 and VCC3. Typically connected to +5 V. Channel 3 Buffer Output. Channel 2 Buffer Output. Channel 1 Buffer Output. Power Supply Input. Short to VCC2 and VCC3. Typically connected to +5 V.
Rev. B | Page 5 of 8
ADD8504/ADD8505/ADD8506 TYPICAL PERFORMANCE CHARACTERISTICS
5.5 5.0 4.5 VCM = 2.5V TA = 25C
5V
SUPPLY CURRENT (mA)
4.0
VCC = 5V TA = 25C INPUT 0V 5V
3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 1 2 3 4 5 6 7
05549-004
OUTPUT 0V
0 SUPPLY VOLTAGE (V)
CH1 2.00V
CH2 2.00V
M400ns
Figure 7. Supply Current vs. Supply Voltage
1000
Figure 10. Transient Response--Rising
OUTPUT VOLTAGE TO SUPPLY RAIL (mV)
VCC = 5V TA = 25C
5V INPUT VCC = 5V TA = 25C
100
0V
OUTPUT HIGH
5V OUTPUT
OUTPUT LOW 10
0V
0
1
10
100
05549-005
1 LOAD CURRENT (mA)
CH1 2.00V
CH2 2.00V
M400ns
Figure 8. Output Voltage to Supply Rail vs. Load Current
Figure 11. Transient Response--Falling
6 VCC = 5V VCM = 2.5V 4 CH6 CH2 CH5
VOS (mV)
2 0
CH3 -2 CH1 -4
-6 CH4 -8 -40 0 25 40 80 90 95 100 105 TEMPERATURE (C)
Figure 9. Offset Voltage vs. Temperature
05549-006
Rev. B | Page 6 of 8
05549-008
05549-007
ADD8504/ADD8505/ADD8506 APPLICATIONS
The ADD8504/ADD8505/ADD8506 have CMOS buffers with A/B inputs to select between two different reference voltages set up by an external resistor ladder. Input bias currents are orders of magnitude less than competitive parts. This allows the use of a very large resistor ladder to save supply current. The buffer outputs are designed to drive resistive or capacitive loads. Therefore, to attain the best display performance, do not use resistors in series with these outputs. Outputs have high slew rates and 6 s settling times. Each output delivers a minimum of 120 mA, ensuring a fast response to varying loads. Power supply pins on the ADD8505 and ADD8506 have multiple ground (GND) and supply (VCC) connections. Because of the high peak currents that these buffers deliver, it is recommended that all GND and VCC pins be connected and suitably bypassed. Table 6. MUX Function
A/B Select Logic High Logic Low Input INAx INBx
5V 0.1F RA1 RB1
1
VCOM (INVERTING SIGNAL) 0.1F
5V
24
TO COLUMN DRIVERS
RA2 RB2
2
23
3
22
RA3 RB3
4
21
5
20
RA4 RB4
6
19
7
18
RA5 RB5
8
17
9
16
RA6 RB6
10
15
11 10
14
RA7 RB7 5V 0.1F
12
13
NOTES 1. RAx RESISTORS ARE USED TO SET POSITIVE INVERSION GAMMA VOLTAGES. 2. RBx RESISTORS ARE USED TO SET NEGATIVE INVERSION GAMMA VOLTAGES.
Figure 12. Typical Application
Rev. B | Page 7 of 8
05549-009
ADD8504/ADD8505/ADD8506 OUTLINE DIMENSIONS
5.10 5.00 4.90
6.60 6.50 6.40
16
9
20
11
4.50 4.40 4.30
1 8
6.40 BSC
1 10
4.50 4.40 4.30 6.40 BSC
PIN 1 1.20 MAX 0.20 0.09 0.65 BSC 0.30 0.19 COPLANARITY 0.10 SEATING PLANE 8 0 0.75 0.60 0.45
PIN 1 0.65 BSC 0.15 0.05 COPLANARITY 0.10 0.30 0.19 1.20 MAX 0.20 0.09 8 0 0.75 0.60 0.45
0.15 0.05
SEATING PLANE
COMPLIANT TO JEDEC STANDARDS MO-153-AC
COMPLIANT TO JEDEC STANDARDS MO-153-AB
Figure 13. 16-Lead Thin Shrink Small Outline Package [TSSOP] (RU-16) Dimensions shown in millimeters
7.90 7.80 7.70
Figure 14. 20-Lead Thin Shrink Small Outline Package [TSSOP] (RU-20) Dimensions shown in millimeters
24
13
4.50 4.40 4.30 6.40 BSC
1 12
PIN 1 0.65 BSC 0.15 0.05 0.30 0.19 0.10 COPLANARITY COMPLIANT TO JEDEC STANDARDS MO-153-AD 1.20 MAX
SEATING PLANE
0.20 0.09
8 0
0.75 0.60 0.45
Figure 15. 24-Lead Thin Shrink Small Outline Package [TSSOP] (RU-24) Dimensions shown in millimeters
ORDERING GUIDE
Model ADD8504WRUZ 1 ADD8504WRUZ-REEL71 ADD8504WRUZ-REEL1 ADD8505WRUZ1 ADD8505WRUZ-REEL71 ADD8505WRUZ-REEL1 ADD8506WRUZ1 ADD8506WRUZ-REEL71 ADD8506WRUZ-REEL1
1
Temperature Range -40C to +105C -40C to +105C -40C to +105C -40C to +105C -40C to +105C -40C to +105C -40C to +105C -40C to +105C -40C to +105C
Package Description 16-Lead Thin Shrink Small Outline Package [TSSOP], Tube 16-Lead Thin Shrink Small Outline Package [TSSOP], 7" Reel 16-Lead Thin Shrink Small Outline Package [TSSOP], 13" Reel 20-Lead Thin Shrink Small Outline Package [TSSOP], Tube 20-Lead Thin Shrink Small Outline Package [TSSOP], 7" Reel 20-Lead Thin Shrink Small Outline Package [TSSOP], 13" Reel 24-Lead Thin Shrink Small Outline Package [TSSOP], Tube 24-Lead Thin Shrink Small Outline Package [TSSOP], 7" Reel 24-Lead Thin Shrink Small Outline Package [TSSOP], 13" Reel
Package Option RU-16 RU-16 RU-16 RU-20 RU-20 RU-20 RU-24 RU-24 RU-24
Ordering Quantity 96 1,000 2,500 96 1,000 2,500 96 1,000 2,500
Z = Pb-free part.
(c)2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05549-0-1/06(B)
Rev. B | Page 8 of 8

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