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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: −40°C to +105°C
16-, 20-, and 24-lead, Pb-free, TSSOP packages
Qualified for automotive applications
PIN CONFIGURATION DIAGRAMS
INA1
1
INB1
2
INA2
3
INB2
4
INA3
5
INB3
6
INA4
7
INB4
8
16
OUT1
15
OUT2
14
VCC1
13
A/B
12
GND
11
GND
05549-001
10
OUT3
9
OUT4
APPLICATIONS
LCD line inversion gamma references
Car navigation panels
Personal media player panels
Automotive infotainment systems
Figure 1. ADD8504, 4-Channel Buffer
INA1
1
INB1
2
INA2
3
INB2
4
INA3
5
20
19
18
17
16
15
14
13
12
11
VCC1
OUT1
OUT2
OUT3
VCC2
A/B
GND
GND
05549-002
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.
The ADD8506WWARUZR7 is the automotive grade version.
INB3
6
INA4
7
INB4
8
INA5
9
INB5
10
OUT4
OUT5
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
23
22
21
20
19
18
17
16
15
14
13
VCC1
OUT1
OUT2
OUT3
VCC2
A/B
GND
GND
OUT4
OUT5
05549-003
OUT6
VCC3
Figure 3. ADD8506, 6-Channel Buffer
Rev. D
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 ©2005–2010 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 Information .................................................................7
Outline Dimensions ..........................................................................8
Ordering Guide .............................................................................9
Automotive Ordering Guide ........................................................9
Automotive Products ....................................................................9
REVISION HISTORY
6/10—Rev. C to Rev. D
Change to Features Section, Applications Section, and General
Description Section .......................................................................... 1
Changes to Ordering Guide ............................................................ 9
Added Automotive Ordering Guide and Automotive Products
Section ................................................................................................ 9
9/07—Rev. B to Rev. C
Change to General Description ...................................................... 1
Change to Ordering Guide .............................................................. 9
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. D | Page 2 of 12
ADD8504/ADD8505/ADD8506
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
V
CC
= 5 V, T
A
= 25°C, unless otherwise noted. V
IN
denotes buffer input voltage; I
LOAD
denotes load current; R
L
denotes load resistance;
C
L
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 High
Symbol
V
OS
V
CM
I
B
A
VO
V
OH
V
OL
R
OUT
I
SC
I
SY
Conditions
0 V ≤ V
IN
≤ 5 V
0
V
IN
= 2.5 V
0.985
I
LOAD
= +20 mA
I
LOAD
= −20 mA
−20 mA ≤ I
LOAD
≤ +20 mA; 0.5 V ≤ V
IN
≤ 4.5 V
4.75
0.2
120
V
IN
= 2.5 V
2.7
3.0
3.9
V
CC
SR
t
S
I
IL
I
IH
V
IL
V
IH
C
L
= 15 pF
R
L
= 250 Ω
C
L
= 200 pF, R
L
= 10 kΩ
V
IN
= 0.0 V
V
IN
= 5.0 V
V
CC
= 5.0 V, −40°C ≤ T
A
≤ 105°C
V
CC
= 3.3 V, −40°C ≤ T
A
≤ 105°C
V
CC
= 5.0 V, −40°C ≤ T
A
≤ 105°C
V
CC
= 3.3 V, −40°C ≤ T
A
≤ 105°C
3.3
7.0
6.2
2.5
3.8
4.4
5.1
6.5
mA
mA
mA
V
V/μs
V/μs
μs
nA
nA
V
V
V
V
0.20
380
2
Min
Typ
Max
20
5
50
Unit
mV
V
nA
V/V
V
V
Ω
mA
6
100
100
0.8
0.7
1.7
1.4
Rev. D | Page 3 of 12
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 V
CC
−65°C to +150°C
−65°C to +150°C
300°C
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
θ
JA1
150
143
128
θ
JC2
28
45
45
Unit
°C/W
°C/W
°C/W
Stresses above 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.
θ
JA
is specified for natural convection on a two-layer board.
θ
JC
is specified for natural convection on a two-layer board.
ESD PERFORMANCE
Table 4.
Model
ADD8504WRUZ
ADD8505WRUZ
ADD8506WRUZ
1
2
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.
3
Field induced charge device model.
ESD CAUTION
Rev. D | Page 4 of 12
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