NSC LM8261MDC Datasheet

LM8261 Single
RRIO, High Output Current & Unlimited Cap Load Op
Amp in SOT23-5

General Description

The LM8261 is a Rail-to-Rail input and output OpAmpwhich
can operate with a wide supply voltage range. This device
has high output current drive, greater than Rail-to-Rail input
common mode voltage range,unlimitedcapacitiveloaddrive
capability, and provides tested and guaranteed high speed
and slew rate while requiring only 0.97mA supply current. It
is specifically designed to handle the requirements of flat
panel TFT panel V

COM

driver applications as well as being
suitable for other low power,andmediumspeedapplications
which require ease of use and enhanced performance over
existing devices.

Greater than Rail-to-Rail input common mode voltage range
with 50dB of Common Mode Rejection, allows high side and
low side sensing, among many applications, without having
any concerns over exceeding the range and no compromise
in accuracy. Exceptionally wide operating supply voltage
range of 2.5V to 30V alleviates any concerns over function­ality under extreme conditions and offers flexibility of use in
multitude of applications. In addition, most device param­eters are insensitive to power supply variations; this design
enhancement is yet another step in simplifying its usage.
The output stage has low distortion (0.05% THD+N) and can
supply a respectable amount of current (15mA) with minimal
headroom from either rail (300mV).

The LM8261 is offered in the space saving SOT23-5 pack­age.

Features

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

n GBWP 21MHz
n Wide supply voltage range 2.5V to 30V
n Slew rate 12V/µs
n Supply current 0.97 mA
n Cap load limit Unlimited
n Output short circuit current +53mA/−75mA
n +/−5% Settling time 400ns (500pF, 100mV

PP

step)

n Input common mode voltage 0.3V beyond rails
n Input voltage noise 15nV/

n Input current noise 1pA/
n THD+N

<

0.05%

Applications

n TFT-LCD flat panel V

COM

driver

n A/D converter buffer
n High side/low side sensing
n Headphone amplifier

Connection Diagram

Ordering Information

Package Ordering Info Pkg Marking Supplied As NSC Drawing

5-Pin SOT-23 LM8261M5

A45A

1K Units Tape and Reel

MA05B

LM8261M5X 3K Units Tape and Reel

Output Response with Heavy Capacitive Load

DS101084-37

SOT23-5

DS101084-62

Top View

September 2000

LM8261 Single RRIO, High Output Current & Unlimited Cap Load Op Amp in SOT23-5

© 2001 National Semiconductor Corporation DS101084 www.national.com

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

ESD Tolerance

2KV (Note 2)

200V(Note 9)

V

IN

Differential +/−10V
Output Short Circuit Duration (Notes 3, 11)
Supply Voltage (V

+-V−

) 32V

Voltage at Input/Output pins V

+

+0.8V, V−−0.8V

Storage Temperature Range −65˚C to +150˚C

Junction Temperature (Note 4) +150˚C
Soldering Information:

Infrared or Convection (20 sec.) 235˚C
Wave Soldering (10 sec.) 260˚C

Operating Ratings

Supply Voltage (V+-V−) 2.5V to 30V
Junction Temperature Range(Note 4) −40˚C to +85˚C
Package Thermal Resistance, θ

JA

,(Note 4)

SOT23-5 325˚C/W

2.7V Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V+= 2.7V, V−= 0V, VCM= 0.5V, VO=V+/2, and
R

L

>

1MΩ to V−. Boldface limits apply at the temperature extremes.

Symbol Parameter Condition

Typ

(Note 5)

Limit

(Note 6)

Units

V

OS

Input Offset Voltage VCM= 0.5V & VCM= 2.2V +/−0.7 +/−5

+/−7

mV

max

TC V

OS

Input Offset Average Drift VCM= 0.5V & VCM= 2.2V

(Note 12)

+/−2 – µV/C

I

B

Input Bias Current VCM= 0.5V

(Note 7)

−1.20 −2.00

−2.70

µA

max

V

CM

= 2.2V

(Note 7)

+0.49 +1.00

+1.60

I

OS

Input Offset Current VCM= 0.5V & VCM= 2.2V 20 250

400

nA

max

CMRR Common Mode Rejection Ratio V

CM

stepped from 0V to 1.0V 100 76

60

dB

min

V

CM

stepped from 1.7V to 2.7V 100

V

CM

stepped from 0V to 2.7V 70 58

50

+PSRR Positive Power Supply

Rejection Ratio

V

+

= 2.7V to 5V 104 78

74

dB

min

CMVR Input Common-Mode Voltage

Range

CMRR

>

50dB −0.3 −0.1

0.0

V

max

3.0 2.8

2.7

V

min

A

VOL

Large Signal Voltage Gain VO= 0.5 to 2.2V,

R

L

= 10K to V

−

78 70

67

dB

min

V

O

= 0.5 to 2.2V,

R

L

=2KtoV

−

73 67

63

dB

min

V

O

Output Swing
High

RL= 10K to V

−

2.59 2.49

2.46

V

min

R

L

=2KtoV

−

2.53 2.45

2.41

Output Swing
Low

R

L

= 10K to V

−

90 100

120

mV

max

I

SC

Output Short Circuit Current Sourcing to V

−

VID= 200mV (Note 10)

48 30

20

mA
min

Sinking to V

+

VID= −200mV (Note 10)

65 50

30

mA
min

I

S

Supply Current No load, VCM= 0.5V 0.95 1.20

1.50

mA

max

SR Slew Rate (Note 8) A

V

= +1,VI=2V

PP

9 – V/µs

LM8261

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2.7V Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for TJ= 25˚C, V+= 2.7V, V−= 0V, VCM= 0.5V, VO=V+/2, and
R

L

>

1MΩ to V−. Boldface limits apply at the temperature extremes.

Symbol Parameter Condition

Typ

(Note 5)

Limit

(Note 6)

Units

f

u

Unity Gain-Frequency VI= 10mV, RL=2KΩto V+/2 10 – MHz

GBWP Gain Bandwidth Product f = 50KHz 21 15.5

14

MHz

min

Phi

m

Phase Margin VI= 10mV 50 – Deg

e

n

Input-Referred Voltage Noise f = 2KHz, RS=50Ω 15 – nV/

i

n

Input-Referred Current Noise f = 2KHz 1 pA/

f

max

Full Power Bandwidth ZL= (20pF || 10KΩ)toV+/2 1 – MHz

5V Electrical Characteristics

Unless otherwise specified, all limited guaranteed for TJ= 25˚C, V+= 5V, V−= 0V, VCM= 1V, VO=V+/2, and
R

L

>

1MΩ to V−. Boldface limits apply at the temperature extremes.

Symbol Parameter Condition

Typ

(Note 5)

Limit

(Note 6)

Units

V

OS

Input Offset Voltage VCM=1V&VCM= 4.5V +/−0.7 +/−5

+/− 7

mV

max

TC V

OS

Input Offset Average Drift VCM=1V&VCM= 4.5V

(Note 12)

+/−2 – µV/˚C

I

B

Input Bias Current VCM=1V

(Note 7)

−1.18 −2.00

−2.70

µA

max

V

CM

= 4.5V

(Note 7)

+0.49 +1.00

+1.60

I

OS

Input Offset Current VCM=1V&VCM= 4.5V 20 250

400

nA

max

CMRR Common Mode Rejection Ratio V

CM

stepped from 0V to 3.3V 110 84

72

dB

min

V

CM

stepped from 4V to 5V 100 –

V

CM

stepped from 0V to 5V 80 64

61

+PSRR Positive Power Supply Rejection

Ratio

V

+

= 2.7V to 5V, VCM= 0.5V 104 78

74

dB

min

CMVR Input Common-Mode Voltage Range CMRR

>

50dB −0.3 −0.1

0.0

V

max

5.3 5.1

5.0

V

min

A

VOL

Large Signal Voltage Gain VO= 0.5 to 4.5V,

R

L

= 10K to V

−

84 74

70

dB

min

V

O

= 0.5 to 4.5V,

R

L

=2KtoV

−

80 70

66

V

O

Output Swing
High

RL= 10K to V

−

4.87 4.75

4.72

V

min

R

L

=2KtoV

−

4.81 4.70

4.66

Output Swing
Low

R

L

= 10K to V

−

86 125

135

mV

max

I

SC

Output Short Circuit Current Sourcing to V

−

VID= 200mV (Note 10)

53 35

20

mA
min

Sinking to V

+

VID= −200mV (Note 10)

75 60

50

LM8261

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5V Electrical Characteristics (Continued)

Unless otherwise specified, all limited guaranteed for TJ= 25˚C, V+= 5V, V−= 0V, VCM= 1V, VO=V+/2, and
R

L

>

1MΩ to V−. Boldface limits apply at the temperature extremes.

Symbol Parameter Condition

Typ

(Note 5)

Limit

(Note 6)

Units

I

S

Supply Current No load, VCM= 1V 0.97 1.25

1.75

mA

max

SR Slew Rate (Note 8) A

V

= +1, VI=5V

PP

12 10

7

V/µs

min

f

u

Unity Gain Frequency VI= 10mV,

R

L

=2KΩto V+/2

10.5 – MHz

GBWP Gain-Bandwidth Product f = 50KHz 21 16

15

MHz

min

Phi

m

Phase Margin VI= 10mV 53 – Deg

e

n

Input-Referred Voltage Noise f = 2KHz, RS=50Ω 15 – nV/

i

n

Input-Referred Current Noise f = 2KHz 1 – pA/

f

max

Full Power Bandwidth ZL= (20pF || 10kΩ)toV+/2 900 – KHz

t

S

Settling Time (+/−5%) 100mVPPStep, 500pF load 400 – ns

THD+N Total Harmonic Distortion + Noise R

L

=1KΩto V+/2

f = 10KHz to A

V

= +2, 4V

PP

swing

0.05 – %

+/−15V Electrical Characteristics

Unless otherwise specified, all limited guaranteed for TJ= 25˚C, V+= 15V, V−= −15V, VCM= 0V, VO= 0V, and
R

L

>

1MΩ to 0V. Boldface limits apply at the temperature extremes.

Symbol Parameter Condition

Typ

(Note 5)

Limit

(Note 6)

Units

V

OS

Input Offset Voltage VCM= −14.5V & VCM= 14.5V +/−0.7 +/−7

+/− 9

mV

max

TC V

OS

Input Offset Average Drift VCM= −14.5V & VCM= 14.5V

(Note 12)

+/−2 – µV/˚C

I

B

Input Bias Current VCM= −14.5V

(Note 7)

−1.05 −2.00

−2.80

µA

max

V

CM

= 14.5V

(Note 7)

+0.49 +1.00

+1.50

I

OS

Input Offset Current VCM= −14.5V & VCM= 14.5V 30 275

550

nA

max

CMRR Common Mode Rejection Ratio V

CM

stepped from −15V to 13V 100 84

80

dB

min

V

CM

stepped from 14V to 15V 100 –

V

CM

stepped from −15V to 15V 88 74

72

+PSRR Positive Power Supply Rejection

Ratio

V

+

= 12V to 15V 100 70

66

dB

min

−PSRR Negative Power Supply Rejection
Ratio

V

−

= −12V to −15V 100 70

66

dB

min

CMVR Input Common-Mode Voltage Range CMRR

>

50dB −15.3 −15.1

−15.0

V

max

15.3 15.1

15.0

V

min

LM8261

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+/−15V Electrical Characteristics (Continued)

Unless otherwise specified, all limited guaranteed for TJ= 25˚C, V+= 15V, V−= −15V, VCM= 0V, VO= 0V, and
R

L

>

1MΩ to 0V. Boldface limits apply at the temperature extremes.

Symbol Parameter Condition

Typ

(Note 5)

Limit

(Note 6)

Units

A

VOL

Large Signal Voltage Gain VO= 0V to +/−13V,

R

L

= 10KΩ

85 78

74

dB

min

V

O

= 0V to +/−13V,

R

L

=2KΩ

79 72

66

V

O

Output Swing
High

RL= 10KΩ 14.83 14.65

14.61

V

min

R

L

=2KΩ 14.73 14.60

14.55

Output Swing
Low

R

L

= 10KΩ −14.91 −14.75

−14.65

V

max

R

L

=2KΩ −14.83 −14.65

−14.60

I

SC

Output Short Circuit Current Sourcing to ground

V

ID

= 200mV (Note 10)

60 40

25

mA
min

Sinking to ground
V

ID

= 200mV (Note 10)

100 70

60

I

S

Supply Current No load, VCM= 0V 1.30 1.50

1.90

mA

max

SR Slew Rate

(Note 8)

A

V

= +1, VI= 24V

PP

15 10

8

V/µs

min

f

u

Unity Gain Frequency VI= 10mV, RL=2KΩ 14 – MHz

GBWP Gain-Bandwidth Product f = 50KHz 24 18

16

MHz

min

Phi

m

Phase Margin VI= 10mV 58 – Deg

e

n

Input-Referred Voltage Noise f = 2KHz, RS=50Ω 15 – nV/

i

n

Input-Referred Current Noise f = 2KHz 1 – pA/

f

max

Full Power Bandwidth ZL= 20pF || 10KΩ 160 – KHz

t

S

Settling Time (+/−1%, AV= +1) Positive Step, 5V

PP

320 –

ns

Negative Step, 5V

PP

600 –

THD+N Total Harmonic Distortion +Noise R

L

=1KΩ, f = 10KHz,

A

V

= +2, 28VPPswing

0.01 – %

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Rating 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: 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

J

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

P

D

=(TJ(max) - TA)/ θJA. All numbers apply for packages soldered directly onto a PC board.

Note 5: Typical Values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: Positive current corresponds to current flowing into the device.
Note 8: Slew rate is the slower of the rising and falling slew rates. Connected as a Voltage Follower.
Note 9: Machine Model, 0Ω is series with 200pF.
Note 10: Short circuit test is a momentary test. See Note 11.
Note 11: Output short circuit duration is infinite for V

S

≤ 6V at room temperature and below. For V

S

>

6V, allowable short circuit duration is 1.5ms.

Note 12: Offset voltage average drift determined by dividing the change in V

OS

at temperature extremes into the total temperature change.

LM8261

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Typical Performance Characteristics T

A

= 25˚C, Unless Otherwise Noted

V

OS

vs. VCMfor 3 Representative Units

DS101084-30

VOSvs. VCMfor 3 Representative Units

DS101084-29

VOSvs. VCMfor 3 Representative Units

DS101084-31

VOSvs. VSfor 3 Representative Units

DS101084-34

VOSvs. VSfor 3 Representative Units

DS101084-35

VOSvs. VSfor 3 Representative Units

DS101084-33

LM8261

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