NSC LM8261M5X, LM8261M5 Datasheet

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

April 2000

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 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).

driver applications as well as being

COM

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

n Input current noise 1pA/ n THD+N

PP

<

step)

0.05%

Applications

n TFT-LCD flat panel V n A/D converter buffer n High side/low side sensing n Headphone amplifier

COM

driver

Output Response with Heavy Capacitive Load

DS101084-37

Connection Diagram

LM8261

SOT23-5

DS101084-62

Top View

Ordering Information

Package Ordering Info Pkg Marking Supplied AS NSC Drawing

5-Pin SOT-23 LM8261M5

LM8261M5X 3K Units Tape and Reel

A45A

1K Units Tape and Reel

MA05B

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LM8261

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 V

Differential +/−10V

IN

Output Short Circuit Duration (Notes 3, 11) Supply Voltage (V

+-V−

) 32V

Voltage at Input/Output pins V

2KV (Note 2)

200V(Note 9)

+

+0.8V, V−−0.8V

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

SOT23-5 325˚C/W

,(Note 4)

JA

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

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

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

L

Symbol Parameter Condition

V

OS

TC V

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

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

OS

(Note 12)

I

B

Input Bias Current VCM= 0.5V

(Note 7)

= 2.2V

V

CM

(Note 7)

I

OS

CMRR Common Mode Rejection Ratio V

+PSRR Positive Power Supply

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

stepped from 0V to 1.0V 100 76

CM

stepped from 1.7V to 2.7V 100

V

CM

V

stepped from 0V to 2.7V 70 58

CM

+

V

= 2.7V to 5V 104 78

Rejection Ratio

CMVR Input Common-Mode Voltage

CMRR

>

50dB −0.3 −0.1

Range

A

VOL

V

O

Large Signal Voltage Gain VO= 0.5 to 2.2V,

= 10K to V

R

L

V

= 0.5 to 2.2V,

O

=2KtoV

R

L

Output Swing

RL= 10K to V

−

High

−

Output Swing

=2KtoV

R

L

R

= 10K to V

L

Low

I

SC

Output Short Circuit Current Sourcing to V

−

VID= 200mV (Note 10) Sinking to V

+

VID= −200mV (Note 10)

I

S

SR Slew Rate (Note 8) A

Supply Current No load, VCM= 0.5V 0.95 1.20

= +1,VI=2V

V

PP

Typ

(Note 5)

+/−2 – µV/C

−1.20 −2.00

+0.49 +1.00

3.0 2.8

78 70

73 67

2.59 2.49

2.53 2.45

90 100

48 30

65 50

9 – V/µs

Limit

(Note 6)

+/−7

−2.70

+1.60

2.46

2.41

1.50

400

60

50

74

0.0

2.7

67

63

120

20

30

Units

mV

max

µA

max

nA

max

dB

min

dB

min

V

max

V

min

dB

min

dB

min

V

min

mV

max

mA min

mA

max

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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

LM8261

>

R

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

L

Symbol Parameter Condition

f

u

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

Typ

(Note 5)

GBWP Gain Bandwidth Product f = 50KHz 21 15.5

Phi e

m

n

Phase Margin VI= 10mV 50 – Deg Input-Referred Voltage Noise f = 2KHz, RS=50Ω 15 – nV/

Limit

(Note 6)

14

Units

MHz

min

i

n

f

max

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

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

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

L

Symbol Parameter Condition

V

OS

TC V

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

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

OS

(Note 12)

I

B

Input Bias Current VCM=1V

(Note 7)

= 4.5V

V

CM

(Note 7)

I

OS

CMRR Common Mode Rejection Ratio V

+PSRR Positive Power Supply Rejection

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

stepped from 0V to 3.3V 110 84

CM

stepped from 4V to 5V 100 –

V

CM

V

stepped from 0V to 5V 80 64

CM

+

V

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

Ratio

CMVR Input Common-Mode Voltage Range CMRR

A

VOL

V

O

Large Signal Voltage Gain VO= 0.5 to 4.5V,

Output Swing

>

50dB −0.3 −0.1

= 10K to V

R

L

= 0.5 to 4.5V,

V

O

=2KtoV

R

L

RL= 10K to V

−

High

−

Output Swing

=2KtoV

R

L

R

= 10K to V

L

Low

I

SC

Output Short Circuit Current Sourcing to V

−

VID= 200mV (Note 10) Sinking to V

+

VID= −200mV (Note 10)

Typ

(Note 5)

+/−2 – µV/˚C

−1.18 −2.00

+0.49 +1.00

5.3 5.1

84 74

80 70

4.87 4.75

4.81 4.70

86 125

53 35

75 60

Limit

(Note 6)

+/− 7

−2.70

+1.60

400

72

61

74

0.0

5.0

70

66

4.72

4.66

135

20

50

Units

mV

max

µA

max

nA

max

dB

min

dB

min

V

max

V

min

dB

min

V

min

mV

max

mA min

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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

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

L

Symbol Parameter Condition

I

S

SR Slew Rate (Note 8) A

f

u

Supply Current No load, VCM= 1V 0.97 1.25

= +1, VI=5V

V

PP

Unity Gain Frequency VI= 10mV,

=2KΩto V+/2

R

L

Typ

(Note 5)

12 10

10.5 – MHz

GBWP Gain-Bandwidth Product f = 50KHz 21 16

Phi e

m

n

Phase Margin VI= 10mV 53 – Deg Input-Referred Voltage Noise f = 2KHz, RS=50Ω 15 – nV/

Limit

(Note 6)

1.75

15

LM8261

Units

mA

max

V/µs

7

min

MHz

min

i

n

f

max

t

S

THD+N Total Harmonic Distortion + Noise R

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

Full Power Bandwidth ZL= (20pF || 10kΩ)toV+/2 900 – KHz Settling Time (+/−5%) 100mVPPStep, 500pF load 400 – ns

=1KΩto V+/2

L

f = 10KHz to A

= +2, 4V

V

PP

0.05 – %

swing

+/−15V Electrical Characteristics

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

>

R

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

L

Symbol Parameter Condition

V

OS

TC V

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

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

OS

(Note 12)

I

B

Input Bias Current VCM= −14.5V

(Note 7)

= 14.5V

V

CM

(Note 7)

I

OS

CMRR Common Mode Rejection Ratio V

+PSRR Positive Power Supply Rejection

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

stepped from −15V to 13V 100 84

CM

stepped from 14V to 15V 100 –

V

CM

V

stepped from −15V to 15V 88 74

CM

+

V

= 12V to 15V 100 70

Ratio

−PSRR Negative Power Supply Rejection

−

V

= −12V to −15V 100 70

Ratio

CMVR Input Common-Mode Voltage Range CMRR

>

50dB −15.3 −15.1

Typ

(Note 5)

(Note 6)

+/−2 – µV/˚C

−1.05 −2.00

−2.80

+0.49 +1.00

+1.50

−15.0

15.3 15.1

Limit

+/− 9

550

80

72

66

15.0

Units

mV

max

µA

max

nA

max

dB

min

dB

min

dB

min

V

max

V

min

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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

LM8261

>

R

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

L

Symbol Parameter Condition

A

VOL

V

O

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

= 10KΩ

R

L

= 0V to +/−13V,

V

O

=2KΩ

R

L

Output Swing

RL= 10KΩ 14.83 14.65

Typ

(Note 5)

85 78

79 72

High

=2KΩ 14.73 14.60

R

L

Output Swing

R

= 10KΩ −14.91 −14.75

L

Low

=2KΩ −14.83 −14.65

R

L

I

SC

I

S

Output Short Circuit Current Sourcing to ground

Supply Current No load, VCM= 0V 1.30 1.50

SR Slew Rate

= 200mV (Note 10)

V

ID

Sinking to ground

= 200mV (Note 10)

V

ID

A

= +1, VI= 24V

V

PP

60 40

100 70

15 10

(Note 8)

f

u

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

GBWP Gain-Bandwidth Product f = 50KHz 24 18

Phi e

n

m

Phase Margin VI= 10mV 58 – Deg Input-Referred Voltage Noise f = 2KHz, RS=50Ω 15 – nV/

Limit

(Note 6)

74

66

14.61

14.55

−14.65

−14.60

25

60

1.90

8

16

Units

dB

min

V

min

V

max

mA min

mA

max V/µs

min

MHz

min

i

n

f

max

t

S

THD+N Total Harmonic Distortion +Noise R

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

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

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

Full Power Bandwidth ZL= 20pF || 10KΩ 160 – KHz Settling Time (+/−1%, AV= +1) Positive Step, 5V

Negative Step, 5V

=1KΩ, f = 10KHz,

L

= +2, 28VPPswing

A

V

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

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

J

≤ 6V at room temperature and below. For V

S

PP

at temperature extremes into the total temperature change.

OS

>

6V, allowable short circuit duration is 1.5ms.

S

320 – 600 –

0.01 – %

ns

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