ADD8504 Analog Devices, Inc., ADD8504 Datasheet

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ADD8504

Manufacturer Part Number
ADD8504
Description
4-, 5-, 6-channel, Muxed Input Line Inversion Lcd Gamma Buffers
Manufacturer
Analog Devices, Inc.
Datasheet

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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: −40°C to +105°C
16-, 20-, and 24-lead, Pb-free, TSSOP packages
APPLICATIONS
LCD line inversion gamma references
Car navigation panels
Personal media player panels
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
−40°C to +105°C temperature range. They are available, respec-
tively, in 16-, 20-, and 24-lead thin shrink small outline (TSSOP),
surface-mount, Pb-free packages. The ADD8506 is also offered
in a leaded TSSOP.
Rev. C
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.
4-, 5-, 6-Channel, Muxed Input Line
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
Inversion LCD Gamma Buffers
ADD8504/ADD8505/ADD8506
PIN CONFIGURATION DIAGRAMS
Figure 1. ADD8504, 4-Channel Buffer
Figure 2. ADD8505, 5-Channel Buffer
Figure 3. ADD8506, 6-Channel Buffer
©2005–2007 Analog Devices, Inc. All rights reserved.
INA1
INB1
INA2
INB2
INA3
INB3
INA4
INB4
INA1
INB1
INA2
INB2
INA3
INB3
INA4
INB4
INA5
INB5
INA1
INB1
INA2
INB2
INA3
INB3
INA4
INB4
INA5
INB5
INA6
INB6
10
10
11
12
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
16
15
14
13
12
11
10
20
19
18
17
16
15
14
13
12
11
24
23
22
21
20
19
18
17
16
15
14
13
9
OUT1
OUT2
VCC1
A/B
GND
GND
OUT3
OUT4
VCC1
OUT1
OUT2
OUT3
VCC2
A/B
GND
GND
OUT4
OUT5
VCC1
OUT1
OUT2
OUT3
VCC2
A/B
GND
GND
OUT4
OUT5
OUT6
VCC3
www.analog.com

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ADD8504 Summary of contents

Page 1

... 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 ...

Page 2

... Change to General Description ...................................................... 1 Change to Ordering Guide .............................................................. 9 1/06—Rev Rev. B Added Pin Configurations and Function Descriptions Section ........................................................................ 5 Added Table 5 .................................................................................... 8 10/05—Rev 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   Thermal Resistance .......................................................................4   ...

Page 3

... V, −40°C ≤ T ≤ 105° 5.0 V, −40°C ≤ T ≤ 105° 3.3 V, −40°C ≤ T ≤ 105° Rev Page ADD8504/ADD8505/ADD8506 denotes load current; R denotes load resistance; L Min Typ Max 0.985 4.75 0.2 ≤ 4.5 V 0.20 IN ...

Page 4

... JA 2 θ is specified for natural convection on a two-layer board. JC ESD PERFORMANCE Table 4. Model ADD8504WRUZ ADD8505WRUZ ADD8506WRUZ 1 Human body model. 2 Machine model. 3 Field induced charge device model. ESD CAUTION Rev Page ...

Page 5

... INB3 GND 6 11 INA4 OUT3 7 10 INB4 OUT4 8 9 Figure 6. Pin Configuration, ADD8504, 4-Channel Buffer Function Description Input Channel 1 Buffer Input A. Input Channel 1 Buffer Input B. Input Channel 2 Buffer Input A. Input Channel 2 Buffer Input B. Input Channel 3 Buffer Input A. Input Channel 3 Buffer Input B. ...

Page 6

... ADD8504/ADD8505/ADD8506 TYPICAL PERFORMANCE CHARACTERISTICS 5 2. 25°C 5.0 A 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0 SUPPLY VOLTAGE (V) Figure 7. Supply Current vs. Supply Voltage 1000 VCC = 25°C A 100 OUTPUT HIGH OUTPUT LOW 10 1 0.1 1 LOAD CURRENT (mA) Figure 8. Δ Output Voltage to Supply Rail vs. Load Current 6 4 CH6 CH2 2 CH5 ...

Page 7

... APPLICATIONS The ADD8504/ADD8505/ADD8506 have CMOS buffers with A/B inputs to select between two different reference voltages set 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. ...

Page 8

... ADD8504/ADD8505/ADD8506 OUTLINE DIMENSIONS 5.10 5.00 4. 4.50 6.40 4.40 BSC 4. PIN 1 1.20 MAX 0.15 0.20 0.05 0.09 0.30 0.65 0.19 SEATING BSC PLANE COPLANARITY 0.10 COMPLIANT TO JEDEC STANDARDS MO-153-AB Figure 13. 16-Lead Thin Shrink Small Outline Package [TSSOP] (RU-16) Dimensions shown in millimeters 0.15 0.05 0.15 0.05 0.75 8° 0.60 0° 0.45 COPLANARITY 7.90 7.80 7. 4.50 4.40 4.30 6.40 BSC 1 12 PIN 1 0.65 1.20 BSC MAX 0.30 0.20 SEATING 0.19 PLANE 0.09 0.10 COPLANARITY COMPLIANT TO JEDEC STANDARDS MO-153-AD Figure 15 ...

Page 9

... Thin Shrink Small Outline Package [TSSOP], 7” Reel 24-Lead Thin Shrink Small Outline Package [TSSOP], 13” Reel 24-Lead Thin Shrink Small Outline Package [TSSOP], 7” Reel Evaluation Board Evaluation Board Evaluation Board Rev Page ADD8504/ADD8505/ADD8506 Package Ordering Option Quantity RU-16 96 ...

Page 10

... ADD8504/ADD8505/ADD8506 NOTES Rev Page ...

Page 11

... NOTES ADD8504/ADD8505/ADD8506 Rev Page ...

Page 12

... ADD8504/ADD8505/ADD8506 NOTES ©2005–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05549-0-9/07(C) Rev Page ...

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