Analog Devices AD8511, AD8509 Datasheet

9- and 11-Channel, Muxed Input

a

FEATURES
Single-Supply Operation: 3.3 V to 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

APPLICATIONS
LCD Driver

GENERAL DESCRIPTION

The AD8509 is a 9-channel (AD8511 an 11-channel) LCD
reference driver designed to drive 64 gray scale column drivers.
Each buffer has an A/B input used to select between two volt­ages for LCD displays. These buffers are used to drive the resis­tor ladders of LCD column drivers for gamma correction.

These LCD drivers have higher slew rates and output drive cur­rent 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 –20°C to +85°C
temperature range. They are available in 48-lead thin shrink small
outline (TSSOP) surface mount packages in tape and reel.

NC

1

INA1

2

INB1

3

INA2

4

INB2

5

INA3

6

INB3

7
8

INA4

9

INB4
INA5

10

INB5

11

INA6

12

INB6

13

INA7

14

INB7

15

INA8

16

INB8

17

INA9

18
19

INB9

20

INA10
INB10

21

NC

22

INA11

23

INB11

24

NC = NO CONNECT

LCD Reference Drivers

AD8509/AD8511

FUNCTIONAL BLOCK DIAGRAM

IN A1

IN B1

IN A2

IN B1

IN A11

IN B11

A/B

PIN CONFIGURATIONS

48-Lead TSSOP (RU Suffix)

NC
NC

NC
INA1
INB1
INA2
INB2
INA3
INB3
INA4
INB4
INA5
INB5
INA6
INB6
INA7
INB7
INA8
INB8
INA9
INB9

NC

NC

NC

AD8511

TOP VIEW

(Not to Scale)

NC

48

VO1

47

NC

46

NC

45
44

V

CC

GND

43
42

VO2

41

VO3
VO4

40

VO5

39

V

38

CC

GND

37

VO6

36

VO7

35

VO8

34

VO9

33

VO10

32

GND

31
30

V

CC

A/B

29

NC

28

NC

27

VO11

26

NC

25

V01

V02

V011

1
2
3
4
5
6
7
8

9
10
11

AD8509

12

TOP VIEW

(Not to Scale)

13
14
15
16
17
18
19
20
21
22
23
24

NC = NO CONNECT

48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25

NC
NC
NC
NC
V

CC

GND
VO1
VO2
VO3
VO4
V

CC

GND
VO5
VO6
VO7
VO8
VO9
GND
V

CC

A/B
NC
NC
NC
NC

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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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.
Tel: [phone] World Wide Web Site: http://www.analog.com
Fax: [phone] © Analog Devices, Inc., 1997

AD8509/AD8511–SPECIFICA TIONS

WARNING!

ESD SENSITIVE DEVICE

ELECTRICAL CHARACTERISTICS

(V

= 15 V, TA = 1258C, unless otherwise noted)

S

Parameter Symbol Conditions Min Typ Max Units

INPUT CHARACTERISTICS

Offset Voltage V
Input Bias Current I
Voltage Gain A

OS

B

VO

0.985 V/V

20 mV
50 nA

OUTPUT CHARACTERISTICS

Output Voltage High V
Output Voltage Low V
Output Short Circuit Current I

OH
OL

SC

I

= +20 mA 4.8 V

LOAD

I

= –20 mA 200 mV

LOAD

120 350 mA

POWER SUPPLY

Load Regulation V
Load Regulation V
Supply Current LCD09 I
Supply Current LCD11 ISY, V

= 0.5 V - 4.5 V , I

IN

= 0.5 V - 4.5 V , I

IN

= 2.5 V 8.5 mA

SY, VIN

= 2.5 V 10 mA

IN

= 20 mA 7 mV

SOURCE

= 20 mA 7 mV

SINK

DYNAMIC PERFORMANCE

Slew Rate C
Slew Rate R
Settling Time t

S

= 15 pF 7 V/µs

L

= 250 Ω 6.2 V/µs

L

IDC = 13 mA (Sink/Source) 3 6 µs

LOGIC INPUT CHARACTERISTICS

Input Current Low I
Input Current High I
Input Voltage Low V
Input Voltage High V

Specifications subject to change without notice.

IL
IH

IL
IH

2.0 V

1.0 µA

1.5 µA

0.8 V

ABSOLUTE MAXIMUM RATINGS*

Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 V

Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND to V

Storage Temperature Range

RU Package . . . . . . . . . . . . . . . . . . . . . . 265°C to 1150°C

Operating Temperature Range

AD8509A/AD8511A . . . . . . . . . . . . . . . . . 220°C to 185°C

Junction Temperature Range

S

Model Range Description Options

AD8509ARU* –20°C to +85°C 48-Lead TSSOP RU-48
AD8511ARU* –20°C to +85°C 48-Lead TSSOP RU-48

* Available in 2,000 piece reels only.

RU Package . . . . . . . . . . . . . . . . . . . . . . . 265°C to 1150°C

Lead Temperature Range (Soldering, 60 sec) . . . . . . . 1300°C

*Stresses above those listed under Absolute Maximum Ratings may cause perma-

nent damage to the device. This is a stress rating only; the functional operation of
the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.

Package Type u

*

JA

u

JC

Units

A/B Select (Pin 29) Input

Logic HI INAx
Logic LOW INBx

48-Lead TSSOP (RU) 115 42 °C/W

NOTE

*

θJA is specified for the worst case conditions, i.e., θ

dered in circuit board for surface mount packages.

specified for device sol-

JA

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
the AD8509/AD8511 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.

–2–

ORDERING GUIDE

Temperature Package Package

Table I. MUX Function

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