Datasheet AD8509 Datasheet (ANALOG DEVICES)

9- and 11-Channel, Muxed Input

LCD Reference Buffers

AD8509/AD8511

FEATURES 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

APPLICATION

LCD line inversion gamma references

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.

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.

INA1

INB1

INA2

INB2

INA3

INB3

INA4

INB4

INA5

INB5

INA6

INB6

INA7

INB7

INA8

INB8

INA9

INB9

NC

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

48

NC

47

NC

46

NC

45

NC

44

V

CC

GND

43

VO1

42

VO2

AD8509

TOP VIEW

(Not to Scale)

NC = NO CO NNECT

41

VO3

40

VO4

39

V

38

CC

GND

37

VO5

36

VO6

35

VO7

34

VO8

33

VO9

32

GND

31

30

V

CC

29

A/B

NC

28

NC

27

26

NC

25

Figure 2. AD8509 and AD8511 48-Lead TSSOP (RV Suffix)

NCNCINB2

INA2

4847464544434241403938

INB1

NC

INA1

INB1

INA2

INB2

INA3

INB3

INA4

INB4

INA5

INB5

INA6

INB6

INA7

INB7

INA8

INB8

INA9

INB9

INA10

INB10

NC

INA11

INB11

INA1NCVO1

1

2

3

4

5

6

7

8

AD8511

9

TOP VIEW

(Not to Scale)

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

NC = NO CO NNECT

CC

GNDNCNC

V

48

NC

47

VO1

46

NC

45

NC

44

V

CC

GND

43

VO2

42

VO3

41

VO4

40

VO5

39

V

38

CC

GND

37

VO6

36

VO7

35

VO8

34

VO9

33

VO10

32

GND

31

30

V

CC

29

A/B

NC

28

NC

27

26

VO11

NC

25

03237-012

37

FUNCTIONAL BLOCK DIAGRAM

INA1

INB1

INA2

INB2

INA11

INB11

A/B

Figure 1.

Rev. C

Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Anal og Devices for its use, nor for any infringements of patents or ot her 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.

VO1

VO2

VO11

03237-001

INA3

1

INB3

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)

13141516171819

INA9

INB9

INA11NCINB11

INA10

INB10

2021222324

NC

A/B

VO11

CC

V

Figure 3. AD8511 48-Lead LFCSP

VO236

VO3

35

VO4

34

VO5

33

V

32

CC

GND

31

VO6

30

VO7

29

VO8

28

VO9

27

VO10

26

GND

25

03237-011

AD8509/AD8511

TABLE OF CONTENTS

Features.............................................................................................. 1

Application ........................................................................................ 1

General Description ......................................................................... 1

Functional Block Diagram .............................................................. 1

Pin Configurations ........................................................................... 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Electrical Characteristics ............................................................. 3

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

Absolute Maximum Ratings ............................................................4

Thermal Resistance.......................................................................4

ESD Caution...................................................................................4

Pin Configurations and Function Descriptions............................5

Typical Performance Characteristics..............................................6

Applications........................................................................................8

Outline Dimensions..........................................................................9

Ordering Guide .............................................................................9

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 Symbol Conditions Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage VOS 20 mV Input Bias Current IB 50 nA Voltage Gain AVO 0.985 V/V

OUTPUT CHARACTERISTICS

Output Voltage High VOH I Output Voltage Low VOL I Output Short-Circuit Current ISC 120 350 mA

POWER SUPPLY

Load Regulation VIN = 0.5 V to 4.5 V, I V Supply Current ISY AD8509, VIN = 2.5 V 8.5 mA I

AD8511, VIN = 2.5 V 10 mA

SY

Supply Voltage Range VS 3.3 6.5 V

DYNAMIC PERFORMANCE

Slew Rate CL = 15 pF 7 V/μs R Settling Time tS IDC = 13 mA (sink/source) 3 6 μs

LOGIC INPUT CHARACTERISTICS

Input Current Low IIL 1.0 μA Input Current High IIH 1.5 μA Input Voltage Low VIL 0.8 V Input Voltage High VIH 2.0 V

= +20 mA 4.8 V

LOAD

= −20 mA 200 mV

LOAD

= 20 mA 7 mV

SOURCE

= 0.5 V to 4.5 V, I

IN

= 250 Ω 6.2 V/μs

L

= 20 mA 7 mV

SINK

Rev. C | Page 3 of 12

AD8509/AD8511

ABSOLUTE MAXIMUM RATINGS

Table 2.

Parameter Rating

Supply Voltage 7 V Input Voltage GND to VS Storage Temperature Range

TSSOP (RV-48)

Operating Temperature Range

Junction Temperature Range

TSSOP (RV-48) Package

Lead Temperature Range

(Soldering, 60 sec) 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.

−65°C to +150°C

−40°C to +85°C

−65°C to +150°C

THERMAL RESISTANCE

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 θJA θJC Unit

48-Lead, Pb-Free SSOP (RV-48) 115 42 °C/W 48-Lead, Pb-Free LFCSP (CP-48-1) 125 29 °C/W

Table 4. MUX Function

A/B Select Input

Logic High INAx Logic Low INBx

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

AD8509/AD8511

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

1

NC

2

NC

3

NC

4

INA1

5

INB1

6

INA2

7

INB2

8

INA3

INB3

INA4

INB4

INA5

INB5

INA6

INB6

INA7

INB7

INA8

INB8

INA9

INB9

NC

9

(Not to Scale)

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

AD8509

TOP VIEW

NC = NO CO NNECT

Figure 4. AD8509

48-Lead TSSOP (RV Suffix)

48

NC

47

NC

46

NC

45

NC

44

V

CC

43

GND

42

VO1

41

VO2

40

VO3

39

VO4

38

V

CC

37

GND

36

VO5

35

VO6

34

VO7

33

VO8

32

VO9

31

GND

30

V

CC

29

A/B

NC

28

NC

27

26

NC

25

03237-002

NC

INA1

INB1

INA2

INB2

INA3

INB3

INA4

INB4

INA5

INB5

INA6

INB6

INA7

INB7

INA8

INB8

INA9

INB9

INA10

INB10

NC

INA11

INB11

1

2

3

4

5

6

7

8

AD8511

9

TOP VIEW

(Not to Scale)

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

NC = NO CO NNECT

48

NC

47

VO1

46

NC

45

NC

44

V

CC

43

GND

42

VO2

41

VO3

40

VO4

39

VO5

38

V

CC

37

GND

36

VO6

35

VO7

34

VO8

33

VO9

32

VO10

31

GND

30

V

CC

29

A/B

NC

28

NC

27

26

VO11

NC

25

03237-010

Figure 5. AD8511

48-Lead TSSOP (RV Suffix)

CC

GNDNCNC

V

2021222324

NC

A/B

VO11

37

VO236

VO3

35

VO4

34

VO5

33

V

32

CC

31

GND

30

VO6

29

VO7

28

VO8

27

VO9

26

VO10

25

GND

CC

V

03237-011

INA3

1

INB3

2

INA4

3

INB4

4

INA5

5

INB5

6

INA6

7

INB6

8

INA7

9

INB7

10

INA8

11

INB8

12

NC = NO CONNECT

NCNCINB2

INA2

INB1

INA1NCVO1

4847464544434241403938

PIN 1 INDICATOR

AD8511

TOP VIEW

(Not to Scale)

13141516171819

INA9

INB9

INA11NCINB11

INA10

INB10

Figure 6. AD8511 (48-Lead LFCSP)

Table 5. Pin Function Descriptions

Pin No.

AD8509 (TSSOP) AD8511 (TSSOP) AD8511 (LFCSP) Mnemonic Description

4, 6, 8, 10, 12, 14, 16, 18, 20 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 23 1, 3, 5, 7, 9, 11, 13, 15, 17, 43, 45 INAx MUX Input 5, 7, 9, 11, 13, 15, 17, 19, 21 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 24 2, 4, 6, 8, 10, 12, 14, 16, 19, 44, 46 INBx MUX Input 32 to 36, 39 to 42 26, 32 to 36, 39 to 42, 47 20, 26 to 30, 33 to 36, 41 VOx MUX Output 29 29 22 A/B Input Selection Pin 30, 38, 44 30, 38, 44 24, 32, 40 Vcc Bias 31, 37, 43 31, 37, 43 25, 31, 39 GND Ground 1 to 3, 22 to 28, 45 to 48 1, 22, 25 27, 28, 45, 46, 48 18, 21, 23, 37, 38, 42, 47, 48 NC No Connection

Rev. C | Page 5 of 12

AD8509/AD8511

TYPICAL PERFORMANCE CHARACTERISTICS

10

9

VS=5V

=NOLOAD

R

L

1k

VS=5V

=25°C

T

A

8

7

6

5

SUPPLY CURRENT (mA)

4

3

–35 –15 5 25 45 65 85 105

TEMPERATURE (°C)

Figure 7. Supply Current vs. Temperature Figure 9. Output Voltage to Supply Rail vs. Load Current

10

9

8

7

6

5

4

3

SUPPLY CURRENT (mA)

2

1

0

054321

AD8509

COMMON-MO DE VOLTAGE (V)

AD8511

VS=5V T

=25°C

A

R

=NOLOAD

L

Figure 8. Supply Current vs. Common-Mode Voltage

100

10

Δ OUTPUT VOLTAGE (mV)

03237-003

1

0.1 100101

LOAD CURRENT (mA)

SOURCE

SINK

VS=5V T

= 25°C

A

R

=NOLOAD

L

C

=15pF

L

03237-004

620mV 2.5V

Figure 10. Large Signal Transient Response—Rising

03237-006

03237-005

Rev. C | Page 6 of 12

AD8509/AD8511

VS=5V T

=25°C

A

R

=NOLOAD

L

C

= 15pF

L

VS=5V T

= 25°C

A

R

= 250Ω

L

C

= 15pF

L

620mV 2.5V

03237-007

620mV 2.5V

03237-009

Figure 11. Large Signal Transient Response—Falling

VS=5V T

=25°C

A

R

= 250Ω

L

C

= 15pF

L

620mV 2.5V

Figure 12. Large Signal Transient Response—Rising

03237-008

Figure 13. Large Signal Transient Response—Falling

Rev. C | Page 7 of 12

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 V

connections. Because of the high peak currents

CC

that these buffers can deliver, it is strongly recommended to connect all of the ground and V the V

pins.

CC

pins, and suitably bypass

CC

Rev. C | Page 8 of 12

AD8509/AD8511

OUTLINE DIMENSIONS

12.60

12.50

12.40

1.20 MAX

SEATING

PLANE

25

6.20

6.10

6.00

8.10 BSC

24

0.75

0.60

0.45

0.20

0.09

8° 0°

0.15

0.05

PIN 1

48

1

0.50 BSC

0.27

0.17

COMPLIANT TO JEDEC STANDARDS MO-153-ED

Figure 14. 48-Lead Thin Shrink Small Outline Package [TSSOP]

(RV-48)

Dimensions shown in millimeters

PAD

0.30

0.23

0.18 PIN 1

48

INDICATOR

1

5.25

5.10 SQ

4.95

BSC SQ

PIN 1 INDICATOR

7.00

TOP

VIEW

6.75

BSC SQ

0.60 MAX

37

36

(BOTTOM VIEW)

EXPOSED

1.00

0.85

0.80

12° MAX

SEATING PLANE

0.50

0.40

0.30

0.80 MAX

0.65 TYP

0.50 BSC

COMPLIANT TO JEDEC STANDARDS MO-220-VKKD-2

0.05 MAX

0.02 NOM

0.20 REF

25

24

COPLANARITY

0.08

5.50 REF

12

13

0.25 MIN

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

1

Model Temperature Range Package Description Package Option

AD8509ARU-REEL −40°C to +85°C 48-Lead Thin Shrink Small Outline Package [TSSOP] RV-48 AD8509ARUZ-REEL −40°C to +85°C 48-Lead Thin Shrink Small Outline Package [TSSOP] RV-48 AD8511ARU-REEL −40°C to +85°C 48-Lead Thin Shrink Small Outline Package [TSSOP] RV-48 AD8511ARUZ-REEL −40°C to +85°C 48-Lead Thin Shrink Small Outline Package [TSSOP] RV-48 AD8511ACPZ-REEL −40°C to +85°C 48-Lead Lead Frame Chip Scale Package [LFCSP_VQ] CP-48-1

1

All models only available in 2,500-piece reels.

2

Z = Pb-free part.

2

Rev. C | Page 9 of 12

AD8509/AD8511

NOTES

Rev. C | Page 10 of 12

AD8509/AD8511

NOTES

Rev. C | Page 11 of 12

AD8509/AD8511

NOTES

Rev. C | Page 12 of 12