National Semiconductor LM6588 Technical data

LM6588
TFT-LCD Quad, 16V RRIO High Output Current
Operational Amplifier

LM6588 TFT-LCD Quad, 16V RRIO High Output Current Operational Amplifier

July 2005

General Description

The LM6588 is a low power, high voltage, rail-to-rail input­output amplifier ideally suited for LCD panel V
gamma buffer applications. The LM6588 contains four unity
gain stable amplifiers in one package. It provides a common
mode input ability of 0.5V beyond the supply rails, as well as
an output voltage range that extends to within 50mV of either
supply rail. With these capabilities, the LM6588 provides
maximum dynamic range at any supply voltage. Operating
on supplies ranging from 5V to 16V, while consuming only
750µA per amplifier, the LM6588 has a bandwidth of 24MHz
(−3dB).

The LM6588 also features fast slewing and settling times,
along with a high continuous output capability of 75mA. This
output stage is capable of delivering approximately 200mA
peak currents in order to charge or discharge capacitive
loads. These features are ideal for use in TFT-LCDs.

The LM6588 is available in the industry standard 14-pin SO
package and in the space-saving 14-pin TSSOP package.
The amplifiers are specified for operation over the full −40˚C
to +85˚C temperature range.

COM

driver and

Test Circuit Diagram

Features

(VS=5V,TA= 25˚C typical values unless specified)

n Input common mode voltage 0.5V beyond rails
n Output voltage swing (R
n Output short circuit current
n Continuous output current 75mA
n Supply current (per amp, no load) 750µA
n Supply voltage range 5V to 16V
n Unity gain stable
n −3dB bandwidth (A
n Slew rate 11V/µSec
n Settling time 270ns
n SO-14 and TSSOP-14 package
n Manufactured in National Semiconductor’s

state-of-the-art bonded wafer, trench isolated
complementary bipolar VIP10
performance at low power levels

=2kΩ) 50mV from rails

L

= +1) 24MHz

V

™

technology for high

±

200mA

Applications

n LCD panel V
n LCD panel gamma buffer
n LCD panel repair amp

COM

driver

20073401

© 2005 National Semiconductor Corporation DS200734 www.national.com

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

LM6588

please contact the National Semiconductor Sales Office/

Input Common Mode Voltage V

Junction Temperature (Note 4) 150˚C

Distributors for availability and specifications.

Operating Ratings (Note 1)

ESD Tolerance (Note 2)

Human Body Model 2.5KV

Machine Model 250V

+-V−

Supply Voltage (V

Differential Input Voltage

) 18V

±

5.5V

Output Short Circuit to Ground (Note 3) Continuous

Storage Temperature Range −65˚C to 150˚C

Supply Voltage 4V ≤ V

Temperature Range −40˚C to +85˚C

Thermal Resistance (θ

)

JA

SOIC-14 145˚C/W

TSSOP-14 155˚C/W

16V DC Electrical Characteristics (Note 13)

Unless otherwise specified, all limits guaranteed for at TJ= 25˚C, VCM=1⁄2VSand RL=2kΩ. Boldface limits apply at the tem-
perature extremes.

Symbol Parameter Conditions Min

(Note 6)

V

OS

TC V

Input Offset Voltage 0.7 4

Input Offset Voltage Average

OS

Drift

I

B

I

OS

R

IN

Input Bias Current −0.3/+0.3

Input Offset Current 16 150

Input Resistance Common Mode 20

Differential Mode 0.5

CMRR Common Mode Rejection

V

= 0 to +16V 75

CM

Ratio

= 0 to 14.5V 78

V

CM

PSRR Power Supply Rejection Ratio V

CMVR Input Common-Mode Voltage

=±1V 80

CM

>

CMRR

50dB

Range

A

V

Large Signal Voltage Gain

RL=2kΩ,VO= 0.5 to +15.5V 80

(Note 7)

V

I

SC

I

CONT

I

S

O

Output Swing High RL=2kΩ 15.8

Output Swing Low R

Output Short Circuit Current
(Note 11)

Continuous Output Current
(Note 12)

=2kΩ 0.100 0.200

L

Sourcing 170 230

Sinking 170 230

Sourcing 40

Sinking 40

Supply Current (per Amp) 800 1200

70

72

75

16.2

75

15.6

Typ

(Note 5)

Max

(Note 6)

6

5

±

1

±

7

300

103

103

103 dB

0

−0.2 V

16

108 dB

15.9

1500

−

≤ 16V

S

Units

mV

µV/˚C

µA

nA

MΩ

dB

V

mA

mA

µA

to V

+

16V AC Electrical Characteristics (Note 13)

Unless otherwise specified, all limits guaranteed for at TJ= 25˚C, VCM=1⁄2VSand RL=2kΩ. Boldface limits apply at the tem-
perature extremes.

Symbol Parameter Conditions Min

SR Slew Rate (Note 9) A

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= +1, VIN= 10V

V

PP

(Note 6)

8 15 V/µs

Typ

(Note 5)

Max

(Note 6)

Units

16V AC Electrical Characteristics (Note 13) (Continued)

Unless otherwise specified, all limits guaranteed for at TJ= 25˚C, VCM=1⁄2VSand RL=2kΩ. Boldface limits apply at the tem-
perature extremes.

Symbol Parameter Conditions Min

(Note 6)

Typ

(Note 5)

Max

(Note 6)

Units

Unity Gain Bandwidth Product 15.4 MHz

−3dB Frequency A

Φ

m

t

s

t

p

HD2 2

Phase Margin 61 deg

Settling Time (0.1%) AV= −1, AO=±5V, RL= 500Ω 780 ns

Propagation Delay AV= −2, VIN=±5V, RL= 500Ω 20 ns

nd

Harmonic Distortion
= 1MHz (Note 10)

F

IN

HD3 3rd Harmonic Distortion

= 1MHz (Note 10)

F

IN

e

n

Input-Referred Voltage Noise f = 10kHz 23 nV/

= +1 10 24 MHz

V

V

=2V

OUT

V

OUT

=2V

PP

PP

−53 dBc

−40 dBc

5V DC Electrical Characteristics (Note 13)

Unless otherwise specified, all limits guaranteed for at TJ= 25˚C, VCM=1⁄2VSand RL=2kΩ. Boldface limits apply at the tem-
perature extremes.

Symbol Parameter Conditions Min

(Note 6)

V

OS

TC V

Input Offset Voltage 0.7 4

Input Offset Voltage Average

OS

Drift

I

B

I

OS

R

IN

Input Bias Current −0.3/+0.3

Input Offset Current 20 150

Input Resistance Common Mode 20

Differential Mode 0.5

CMRR Common Mode Rejection

V

Stepped from 0 to 5V 70

CM

Ratio

VCMStepped from 0 to 3.5V 75

PSRR Power Supply Rejection Ratio V

CMVR Input Common-Mode Voltage

S=VCC

CMRR

= 3.5V to 5.5V 80

>

50dB

Range

A

V

Large Signal Voltage Gain

RL=2kΩ,VO= 0 to 5V 80

(Note 7)

V

O

Output Swing High RL=2kΩ 4.85

Output Swing Low RL=2kΩ 0.05 0.15

I

SC

I

CONT

I

S

Output Short Circuit Current
(Note 11)

Continuous Output Current
(Note 12)

Sourcing 160 200

Sinking 160 200

Sourcing 75

Sinking 75

Supply Current (per Amp) 750 1000

66

70

75

5.2

75

4.7

Typ

(Note 5)

Max

(Note 6)

6

10

±

1

±

7

300

105

105

92

0.0

−0.2 V

5.0

106 dB

4.95

1250

Units

µV/˚C

LM6588

mV

µA

nA

MΩ

dB

dB

V

mA

mA

µA

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5V AC Electrical Characteristics (Note 13)

Unless otherwise specified, all limits guaranteed for at TJ= 25˚C, VCM=1⁄2VSand RL=2kΩ. Boldface limits apply at the tem-

LM6588

perature extremes.

Symbol Parameter Conditions Min

(Note 6)

SR Slew Rate (Note 9) A

= +1, VIN= 3.5V

V

PP

Unity Gain Bandwidth Product 15.3 MHz

−3dB Frequency A

Φ

m

t

s

t

p

HD2 2

Phase Margin 56 deg

Settling Time (0.1%) AV= −1, VO=±1V, RL= 500Ω 270 ns

Propagation Delay AV= −2, VIN=±1V, RL= 500Ω 21 ns

nd

Harmonic Distortion
= 1MHz (Note 10)

F

IN

HD3 3rd Harmonic Distortion

= 1MHz (Note 10)

F

IN

e

n

Note 1: Note 1: Absolute maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the
device is intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical
Characteristics.

Note 2: For testing purposes, ESD was applied using human body model, 1.5kΩ in series with 100pF.

Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the

maximum allowed junction temperature of 150˚C

Note 4: The maximum power dissipation is a function of T
P

D

Note 5: Typical values represent the most likely parametric norm.

Note 6: All limits are guaranteed by testing or statistical analysis.

Note 7: Large signal voltage gain is the total output swing divided by the input signal required to produce that swing.

Note 8: The open loop output current is guaranteed, by the measurement of the open loop output voltage swing.

Note 9: Slew rate is the average of the raising and falling slew rates.

Note 10: Harmonics are measured with A

Note 11: Continuous operation at these output currents will exceed the power dissipation ability of the device

Note 12: Power dissipation limits may be exceeded if all four amplifiers source or sink 40mA. Voltage across the output transistors and their output currents must

be taken into account to determine the power dissipation of the device

Note 13: Electrical table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating of
the device such that T
See applications section for information on temperature de-rating of this device.

Input-Referred Voltage Noise f = 10kHz 23 nV/

=(T

J(MAX)-TA

)/ θJA. All numbers apply for packages soldered directly onto a PC board.

= +2 and RL= 100Ω and VIN=1VPPto give V

V

. No guarantee of parametric performance is indicated in the electrical tables under conditions of internal self heating where T

J=TA

= +1 10 24 MHz

V

V

=2V

OUT

V

OUT

PP

=2V

PP

, θJA, and TA. The maximum allowable power dissipation at any ambient temperature is

J(MAX)

=2VPP.

OUT

Typ

(Note 5)

Max

(Note 6)

11 V/µs

−53 dBc

−40 dBc

Units

>

J

TA.

Connection Diagram

14-Pin SOIC/TSSOP

Top View

20073402

Ordering Information

Package Part Number Package Marking Transport Media NSC Drawing

14-Pin SOIC

14-Pin TSSOP

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LM6588MA

LM6588MAX 2.5k Units Tape and Reel

LM6588MT

LM6588MTX 2.5k Units Tape and Reel

LM6588MA

LM6588MT

95 Units/Rail

95 Units/Rail

M14A

MTC14

LM6588

Typical Performance Characteristics Unless otherwise specified, all limits guaranteed for T

= 1/2VSand RL=2kΩ.

V

CM

Gain Phase vs. Temperature (V

Gain Phase vs. Capacitive Loading (VS= 5V) Gain Phase vs. Capacitive Loading (VS= 16V)

= 5V) Gain Phase vs. Temperature (VS= 16V)

S

20073403

= 25˚C,

J

20073404

20073405

PSRR (VS= 5V) PSRR (VS= 16V)

20073407 20073408

20073406

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