9- and 11-Channel, Muxed Input
LCD Reference Buffers
AD8509/AD8511
PIN CONFIGURATIONS
Single-supply operation: 3.3 V to 6.5 V
High output current: 300 mA
Low supply current: 6 mA
Stable with 1000 pF loads
Pin compatible with LMC6009
Pin compatible with CL-FP6131
48-lead, Pb-free TSSOP/LFCSP packages
NC 1
48 NC
NC 1
NC 2
47 NC
INA1 2
47 VO1
NC 3
46 NC
INB1 3
46 NC
INA1 4
45 NC
INA2 4
45 NC
INB1 5
44 VCC
INB2 5
44 VCC
INA2 6
43 GND
INA3 6
43 GND
INB2 7
42 VO1
INB3 7
42 VO2
INA3 8
41 VO2
INA4 8
40 VO3
INB4 9
39 VO4
INA5 10
INB4 11
38 VCC
INB5 11
38 VCC
INA5 12
37 GND
INA6 12
37 GND
INB5 13
36 VO5
INB6 13
36 VO6
INA6 14
35 VO6
INA7 14
35 VO7
INB6 15
34 VO7
INB7 15
34 VO8
INA7 16
33 VO8
INA8 16
33 VO9
INB7 17
32 VO9
INB8 17
32 VO10
INA8 18
31 GND
INA9 18
31 GND
INB8 19
30 VCC
INB9 19
30 VCC
INA9 20
29 A/B
INA10 20
29 A/B
INB9 21
28 NC
INB10 21
28 NC
NC 22
27 NC
NC 22
27 NC
NC 23
26 NC
INA11 23
26 VO11
NC 24
25 NC
INB11 24
25 NC
INB3 9
APPLICATION
INA4 10
GENERAL DESCRIPTION
The AD8509 and AD8511 are 9-channel and 11-channel LCD
reference buffers, respectively, designed to drive 64 gray scale
column drivers. Each buffer has an A/B input to select between
two voltages for LCD displays. These buffers drive the resistor
ladders of LCD column drivers for gamma correction. The LCD
drivers have higher slew rates and higher output drive currents
than similar competitive parts. This increases the stability of
the reference ladder, resulting in better gray scale and visual
performance.
NC = NO CONNECT
41 VO3
AD8511
TOP VIEW
(Not to Scale)
40 VO4
39 VO5
NC = NO CONNECT
Figure 2. AD8509 and AD8511 48-Lead TSSOP (RV Suffix)
48
47
46
45
44
43
42
41
40
39
38
37
The AD8509 and AD8511 are specified over the −40°C to +85°C
temperature range. They are available in 48-lead, Pb-free TSSOP
packages in tape and reel. Additionally, the ADD8511 is available
in a 48-lead, Pb-free LFCSP package.
TOP VIEW
(Not to Scale)
NC
NC
INB2
INA2
INB1
INA1
NC
VO1
VCC
GND
NC
NC
LCD line inversion gamma references
AD8509
48 NC
03237-012
FEATURES
INA2
VO2
INB2
INA11
VO11
03237-001
INB11
A/B
Figure 1.
1
2
INA4 3
INB4 4
INA5 5
INB5 6
INA6 7
INB6 8
INA7 9
INB7 10
INA8 11
INB8 12
NC = NO CONNECT
PIN 1
INDICATOR
AD8511
TOP VIEW
(Not to Scale)
36
35
34
33
32
31
30
29
28
27
26
25
VO2
VO3
VO4
VO5
VCC
GND
VO6
VO7
VO8
VO9
VO10
GND
03237-011
VO1
INB1
INA3
INB3
13
14
15
16
17
18
19
20
21
22
23
24
INA1
INA9
INB9
INA10
INB10
INA11
NC
INB11
VO11
NC
A/B
NC
VCC
FUNCTIONAL BLOCK DIAGRAM
Figure 3. AD8511 48-Lead LFCSP
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.
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
©2006 Analog Devices, Inc. All rights reserved.
AD8509/AD8511
TABLE OF CONTENTS
Features .............................................................................................. 1
Absolute Maximum Ratings ............................................................4
Application ........................................................................................ 1
Thermal Resistance .......................................................................4
General Description ......................................................................... 1
ESD Caution...................................................................................4
Functional Block Diagram .............................................................. 1
Pin Configurations and Function Descriptions ............................5
Pin Configurations ........................................................................... 1
Typical Performance Characteristics ..............................................6
Revision History ............................................................................... 2
Applications........................................................................................8
Specifications..................................................................................... 3
Outline Dimensions ..........................................................................9
Electrical Characteristics............................................................. 3
Ordering Guide .............................................................................9
REVISION HISTORY
2/06—Rev. C
Added LFCSP Package.......................................................Universal
Added Pin Configurations and Function Descriptions Section ... 5
Updated Outline Dimensions ........................................................ 9
Changes to Ordering Guide ............................................................ 9
1/05—Rev. A to Rev. B
Changed Maximum Operating Voltage...........................Universal
Change to Features List.................................................................... 1
Changes to Specifications Table...................................................... 3
Changes to Ordering Guide ............................................................ 8
9/04—Rev. 0 to Rev. A
Format Updated..................................................................Universal
Added Pb-Free Part............................................................Universal
Changed Temperature Range............................................Universal
Changed Applications Section.........................................................1
Changes to Ordering Guide .............................................................8
10/97—Revision 0: Initial Version
Rev. C | Page 2 of 12
AD8509/AD8511
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
VS = 5 V, TA = 25°C, unless otherwise noted.
Table 1.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Input Bias Current
Voltage Gain
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Output Short-Circuit Current
POWER SUPPLY
Load Regulation
Supply Current
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
Conditions
VOS
IB
AVO
VOH
VOL
ISC
ISY
ISY
VS
tS
Min
Typ
Max
Unit
20
50
mV
nA
V/V
0.985
ILOAD = +20 mA
ILOAD = −20 mA
4.8
200
120
VIN = 0.5 V to 4.5 V, ISOURCE = 20 mA
VIN = 0.5 V to 4.5 V, ISINK = 20 mA
AD8509, VIN = 2.5 V
AD8511, VIN = 2.5 V
350
7
7
3.3
CL = 15 pF
RL = 250 Ω
IDC = 13 mA (sink/source)
IIL
IIH
VIL
VIH
7
6.2
3
8.5
10
6.5
mV
mV
mA
mA
V
6
V/μs
V/μs
μs
1.0
1.5
0.8
2.0
Rev. C | Page 3 of 12
V
mV
mA
μA
μA
V
V
AD8509/AD8511
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter
Supply Voltage
Input Voltage
Storage Temperature Range
TSSOP (RV-48)
Operating Temperature Range
Junction Temperature Range
TSSOP (RV-48) Package
Lead Temperature Range
(Soldering, 60 sec)
THERMAL RESISTANCE
Rating
7V
GND to VS
θJA is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages.
Table 3. Thermal Resistance
Package Type
48-Lead, Pb-Free SSOP (RV-48)
48-Lead, Pb-Free LFCSP (CP-48-1)
−65°C to +150°C
−40°C to +85°C
θJA
115
125
−65°C to +150°C
Table 4. MUX Function
300°C
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.
A/B Select
Logic High
Logic Low
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. C | Page 4 of 12
Input
INAx
INBx
θJC
42
29
Unit
°C/W
°C/W
AD8509/AD8511
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
NC
NC 1
48
NC
47
NC
INA1 2
47
VO1
NC 3
46
NC
INB1 3
46
NC
INA1 4
45
NC
INA2 4
45
NC
INB1 5
44
VCC
INB2 5
44
VCC
INA2 6
43
GND
INA3 6
43
GND
INB2 7
42
VO1
INB3 7
42
VO2
INA3 8
41
VO2
INA4 8
41
VO3
40
VO3
INB4 9
40
VO4
39
VO4
INA5 10
39
VO5
INB4 11
38
VCC
INB5 11
38
VCC
INA5 12
37
GND
INA6 12
37
GND
INB5 13
36
VO5
INB6 13
36
VO6
INA6 14
35
VO6
INA7 14
35
VO7
INB6 15
34
VO7
INB7 15
34
VO8
INA7 16
33
VO8
INA8 16
33
VO9
INB7 17
32
VO9
INB8 17
32
VO10
INA8 18
31
GND
INA9 18
31
GND
INB8 19
30
VCC
INB9 19
30
VCC
INA9 20
29
A/B
INA10 20
29
A/B
INB9 21
28
NC
INB10 21
28
NC
NC 22
27
NC
NC 22
27
NC
NC 23
26
NC
INA11 23
26
VO11
NC 24
25
NC
INB11 24
25
NC
INB3 9
INA4 10
AD8509
TOP VIEW
(Not to Scale)
NC = NO CONNECT
AD8511
TOP VIEW
(Not to Scale)
NC = NO CONNECT
Figure 5. AD8511
48-Lead TSSOP (RV Suffix)
48
47
46
45
44
43
42
41
40
39
38
37
NC
NC
INB2
INA2
INB1
INA1
NC
VO1
VCC
GND
NC
NC
Figure 4. AD8509
48-Lead TSSOP (RV Suffix)
03237-010
48
NC 2
03237-002
NC 1
1
2
PIN 1
INDICATOR
INA4 3
INB4 4
INA5 5
INB5 6
INA6 7
INB6 8
INA7 9
INB7 10
INA8 11
INB8 12
AD8511
INA9
INB9
INA10
INB10
INA11
NC
INB11
VO11
NC
A/B
NC
VCC
NC = NO CONNECT
VO2
VO3
VO4
VO5
VCC
GND
VO6
VO7
VO8
VO9
VO10
GND
13
14
15
16
17
18
19
20
21
22
23
24
TOP VIEW
(Not to Scale)
36
35
34
33
32
31
30
29
28
27
26
25
03237-011
INA3
INB3
Figure 6. AD8511 (48-Lead LFCSP)
Table 5. Pin Function Descriptions
AD8509 (TSSOP)
4, 6, 8, 10, 12, 14, 16, 18, 20
5, 7, 9, 11, 13, 15, 17, 19, 21
32 to 36, 39 to 42
29
30, 38, 44
31, 37, 43
1 to 3, 22 to 28, 45 to 48
Pin No.
AD8511 (TSSOP)
2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 23
3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 24
26, 32 to 36, 39 to 42, 47
29
30, 38, 44
31, 37, 43
1, 22, 25 27, 28, 45, 46, 48
AD8511 (LFCSP)
1, 3, 5, 7, 9, 11, 13, 15, 17, 43, 45
2, 4, 6, 8, 10, 12, 14, 16, 19, 44, 46
20, 26 to 30, 33 to 36, 41
22
24, 32, 40
25, 31, 39
18, 21, 23, 37, 38, 42, 47, 48
Rev. C | Page 5 of 12
Mnemonic
INAx
INBx
VOx
A/B
Vcc
GND
NC
Description
MUX Input
MUX Input
MUX Output
Input Selection Pin
Bias
Ground
No Connection
AD8509/AD8511
TYPICAL PERFORMANCE CHARACTERISTICS
Δ OUTPUT VOLTAGE (mV)
9
SUPPLY CURRENT (mA)
1k
VS = 5V
RL = NO LOAD
8
7
6
5
3
–35
03237-003
4
–15
5
25
45
65
85
VS = 5V
TA = 25°C
SOURCE
100
SINK
10
03237-005
10
1
0.1
105
1
TEMPERATURE (°C)
10
100
LOAD CURRENT (mA)
Figure 7. Supply Current vs. Temperature
Figure 9. Output Voltage to Supply Rail vs. Load Current
10
VS = 5V
TA = 25°C
RL = NO LOAD
9
7
6
AD8511
5
AD8509
4
3
1
0
0
1
2
3
4
620mV
2.5V
5
COMMON-MODE VOLTAGE (V)
Figure 8. Supply Current vs. Common-Mode Voltage
Figure 10. Large Signal Transient Response—Rising
Rev. C | Page 6 of 12
03237-006
2
03237-004
SUPPLY CURRENT (mA)
8
VS = 5V
TA = 25°C
RL = NO LOAD
CL = 15pF
AD8509/AD8511
2.5V
620mV
Figure 13. Large Signal Transient Response—Falling
Figure 11. Large Signal Transient Response—Falling
2.5V
03237-008
VS = 5V
TA = 25°C
RL = 250Ω
CL = 15pF
620mV
2.5V
Figure 12. Large Signal Transient Response—Rising
Rev. C | Page 7 of 12
03237-009
620mV
VS = 5V
TA = 25°C
RL = 250Ω
CL = 15pF
03237-007
VS = 5V
TA = 25°C
RL = NO LOAD
CL = 15pF
AD8509/AD8511
APPLICATIONS
The AD8509 and AD8511 are CMOS buffers with A/B inputs
that are used 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 very large
resistor ladders to be used to save supply current. A guaranteed
value of 50 nA is much higher than actual values and is limited
by leakage in the test system.
Buffer outputs are designed to drive resistive loads. They are
also stable with capacitive loads, so no resistors should be used
in series with these outputs to attain the best display performance. Outputs have high slew rates and 6 μs settling times. Each
output can deliver a minimum of 120 mA, assuring fast response
to varying loads.
The AD8509 is a 9-channel buffer and is similar to the LMC6009
in functionality. The AD8511 is an 11-channel buffer similar to
the CL-FP6131. However, the control to select either 9- or
11-channel operation, the EN_11 pin of the CL-FP6131, is not
available on the AD8511. If 9-channel operation is desired, use
the AD8509.
Power supply pins on the AD8509 and AD8511 have multiple
ground and VCC connections. Because of the high peak currents
that these buffers can deliver, it is strongly recommended to
connect all of the ground and VCC pins, and suitably bypass
the VCC pins.
Rev. C | Page 8 of 12
AD8509/AD8511
OUTLINE DIMENSIONS
12.60
12.50
12.40
25
48
6.20
6.10
6.00
8.10 BSC
1
24
PIN 1
1.20 MAX
0.15
0.05
0.50
BSC
0.27
0.17
SEATING
PLANE
0.75
0.60
0.45
8°
0°
0.20
0.09
COMPLIANT TO JEDEC STANDARDS MO-153-ED
Figure 14. 48-Lead Thin Shrink Small Outline Package [TSSOP]
(RV-48)
Dimensions shown in millimeters
7.00
BSC SQ
0.60 MAX
0.60 MAX
37
36
PIN 1
INDICATOR
TOP
VIEW
48
1
5.25
5.10 SQ
4.95
(BOTTOM VIEW)
25
24
12
13
0.25 MIN
5.50
REF
0.80 MAX
0.65 TYP
12° MAX
PIN 1
INDICATOR
EXPOSED
PAD
6.75
BSC SQ
0.50
0.40
0.30
1.00
0.85
0.80
0.30
0.23
0.18
0.05 MAX
0.02 NOM
0.50 BSC
SEATING
PLANE
0.20 REF
COPLANARITY
0.08
COMPLIANT TO JEDEC STANDARDS MO-220-VKKD-2
Figure 15. 48-Lead Lead Frame Chip Scale Package [LFCSP_VQ]
7 mm x 7 mm Body, Very Thin Quad
(CP-48-1)
Dimensions shown in millimeters
ORDERING GUIDE
Model 1
AD8509ARU-REEL
AD8509ARUZ-REEL 2
AD8511ARU-REEL
AD8511ARUZ-REEL2
AD8511ACPZ-REEL2
1
2
Temperature Range
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
Package Description
48-Lead Thin Shrink Small Outline Package [TSSOP]
48-Lead Thin Shrink Small Outline Package [TSSOP]
48-Lead Thin Shrink Small Outline Package [TSSOP]
48-Lead Thin Shrink Small Outline Package [TSSOP]
48-Lead Lead Frame Chip Scale Package [LFCSP_VQ]
All models only available in 2,500-piece reels.
Z = Pb-free part.
Rev. C | Page 9 of 12
Package Option
RV-48
RV-48
RV-48
RV-48
CP-48-1
AD8509/AD8511
NOTES
Rev. C | Page 10 of 12
AD8509/AD8511
NOTES
Rev. C | Page 11 of 12
AD8509/AD8511
NOTES
©2006 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
C03237-0-2/06(C)
Rev. C | Page 12 of 12