ADD8506 [ADI]
6-Channel, Muxed Input Line Inversion LCD Gamma Buffer; 6通道，多路复用输入行反转LCD伽玛缓冲器
| 型号： | ADD8506 |
| 厂家： | 
ADI |
| 描述： | 6-Channel, Muxed Input Line Inversion LCD Gamma Buffer |
| 文件： | 总8页 (文件大小：130K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
6-Channel, Muxed Input
Line Inversion LCD Gamma Buffer
ADD8506
PIN CONFIGURATION DIAGRAM
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
INA1
INB1
INA2
INB2
INA3
INB3
INA4
INB4
INA5
1
2
3
4
5
6
7
8
9
24 VCC1
23 OUT1
22 OUT2
21 OUT3
20 VCC2
19 A/B
Wide temperature range: −40°C to +105°C
24-lead, Pb-free, TSSOP package
18 GND
17 GND
16 OUT4
15 OUT5
14 OUT6
13 VCC3
APPLICATIONS
LCD line inversion gamma references
Car navigation panels
INB5 10
INA6 11
INB6 12
Personal media player panels
Figure 1.
GENERAL DESCRIPTION
The ADD8506 has 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 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 ADD8506 is specified over the −40°C to +105°C
temperature range. It is available in a 24-lead thin shrink small
outline (TSSOP), surface-mount, Pb-free package.
Rev. 0
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 registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
© 2005 Analog Devices, Inc. All rights reserved.
ADD8506
TABLE OF CONTENTS
Features .............................................................................................. 1
Thermal Resistance.......................................................................4
ESD Performance ..........................................................................4
ESD Caution...................................................................................4
Typical Performance Characteristics ..............................................5
Applications........................................................................................6
Outline Dimensions..........................................................................7
Ordering Guide .............................................................................7
Applications....................................................................................... 1
General Description......................................................................... 1
Pin Configuration Diagram ............................................................ 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Characteristics............................................................. 3
Absolute Maximum Ratings............................................................ 4
REVISION HISTORY
9/05—Revision 0: Initial Version
Rev. 0 | Page 2 of 8
ADD8506
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
VCC = 5 V, TA = 25°C, unless otherwise noted. VIN denotes buffer input voltage; ILOAD denotes load current; RL denotes load resistance;
CL denotes load capacitance.
Table 1.
Parameter
Symbol Conditions
Min
Typ
Max Unit
INPUT CHARACTERISTICS
Offset Voltage
Input Common-Mode Voltage Range
Input Bias Current
VOS
VCM
IB
0 V ≤ VIN ≤ 5 V
VIN = 2.5 V
20
5
50
mV
V
nA
V/V
0
2
Voltage Gain
AVO
0.985
4.75
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Output Resistance
Output Short Circuit Current
POWER SUPPLY
VOH
VOL
ROUT
ISC
ILOAD = +20 mA
ILOAD = −20 mA
−20 mA ≤ ILOAD ≤ +20 mA; 0.5 V ≤ VIN ≤ 4.5 V
V
V
Ω
mA
0.2
0.20
380
120
3.3
Supply Current
ISY
VCC
VIN = 2.5 V
3.9
5.1
6.5
mA
V
Supply Voltage Range
DYNAMIC PERFORMANCE
Slew Rate
SR
tS
CL = 15 pF
RL = 250 Ω
CL = 200 pF, RL = 10 kΩ
7.0
6.2
2.5
V/μs
V/μs
μs
Settling Time
6
LOGIC INPUT CHARACTERISTICS
Input Current Low
Input Current High
Input Voltage Low
Input Voltage Low
Input Voltage High
Input Voltage High
IIL
IIH
VIL
VIL
VIH
VIH
VIN = 0.0 V
VIN = 5.0 V
VCC = 5.0 V, −40°C ≤ TA ≤ 105°C
VCC = 3.3 V, −40°C ≤ TA ≤ 105°C
VCC = 5.0 V, −40°C ≤ TA ≤ 105°C
VCC = 3.3 V, −40°C ≤ TA ≤ 105°C
100
100
0.8
nA
nA
V
V
V
0.7
1.7
1.4
V
Rev. 0 | Page 3 of 8
ADD8506
ABSOLUTE MAXIMUM RATINGS
Table 2.
THERMAL RESISTANCE
Parameter
Rating
Table 3. Thermal Package Characteristics
Supply Voltage
7 V
1
2
Model
Package Type
θJA
θJC
Unit
Input Voltage
GND to VCC
−65°C to +150°C
−65°C to +150°C
300°C
ADD8506WRUZ 24-Lead Pb-Free TSSOP 128
45
°C/W
Storage Temperature Range
Junction Temperature Range
Lead Temperature (Soldering, 60 sec)
1 θJA is specified for natural convection on a two-layer board.
2 θJC is specified for natural convection on a two-layer board.
ESD PERFORMANCE
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.
Table 4.
Model
HBM1
MM2
FICDM3
ADD8506WRUZ 3.5 kV
200 V
1.0 kV
1 Human body model.
2 Machine model.
3 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. 0 | Page 4 of 8
ADD8506
TYPICAL PERFORMANCE CHARACTERISTICS
5.5
V
T
= 2.5V
= 25°C
CM
5V
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
A
V
= 5V
CC
= 25°C
T
A
INPUT
0V
5V
OUTPUT
0V
0.5
0
0
1
2
3
4
5
6
7
CH1 2.00V CH2 2.00V
M400ns
SUPPLY VOLTAGE (V)
Figure 2. Supply Current vs. Supply Voltage
Figure 5. Transient Response—Rising
1000
100
10
V
= 5V
= 25°C
CC
5V
T
A
INPUT
V
= 5V
CC
= 25°C
T
A
0V
5V
OUTPUT HIGH
OUTPUT LOW
OUTPUT
0V
1
0
1
10
100
CH1 2.00V CH2 2.00V
M400ns
LOAD CURRENT (mA)
Figure 3. Δ Output Voltage to Supply Rail vs. Load Current
Figure 6. Transient Response—Falling
6
V
V
= 5V
= 2.5V
CC
CM
CH6
4
2
CH2
CH5
0
CH3
CH1
–2
–4
–6
–8
CH4
–40
0
25
40
80
90
95
100
105
TEMPERATURE (°C)
Figure 4. Offset Voltage vs. Temperature
Rev. 0 | Page 5 of 8
ADD8506
APPLICATIONS
The ADD8506 has 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.
Power supply pins on the 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 5. MUX Function
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 μs settling times. Each output delivers a
minimum of 120 mA, ensuring a fast response to varying loads.
A/B Select
Logic High
Logic Low
Input
INAx
INBx
VCOM
(INVERTING SIGNAL)
5V
5V
0.1μF
0.1μF
RA1
RB1
1
24
23
22
21
20
19
18
17
16
15
14
13
TO COLUMN
DRIVERS
RA2
2
3
RB2
4
RA3
RA4
RA5
RA6
RB3
RB4
RB5
RB6
5
6
7
8
9
10
11
12
RA7
RB7
5V
0.1μF
NOTES
1. RAx RESISTORS ARE USED TO SET POSITIVE INVERSION GAMMA VOLTAGES.
2. RBx RESISTORS ARE USED TO SET NEGATIVE INVERSION GAMMA VOLTAGES.
Figure 7. Typical Application
Rev. 0 | Page 6 of 8
ADD8506
OUTLINE DIMENSIONS
7.90
7.80
7.70
24
13
12
4.50
4.40
4.30
6.40 BSC
1
PIN 1
0.65
BSC
1.20
MAX
0.15
0.05
0.75
0.60
0.45
8°
0°
0.30
0.19
0.20
0.09
SEATING
PLANE
0.10 COPLANARITY
COMPLIANT TO JEDEC STANDARDS MO-153-AD
Figure 8. 24-Lead Thin Shrink Small Outline Package [TSSOP]
(RU-24)
Dimensions shown in millimeters
ORDERING GUIDE
Temperature
Range
−40°C to +105°C
Package
Option
Ordering
Quantity
Model
ADD8506WRUZ1
ADD8506WRUZ-REEL71 −40°C to +105°C
ADD8506WRUZ-REEL1
Package Description
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
RU-24
RU-24
RU-24
96
1,000
2,500
−40°C to +105°C
1 Z = Pb-free part.
Rev. 0 | Page 7 of 8
ADD8506
NOTES
©
2005 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D05549-0-9/05(0)
Rev. 0 | Page 8 of 8
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