National Semiconductor LM6211 Technical data

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LM6211
Low Noise, RRO Operational Amplifier with CMOS Input
and 24V Operation

LM6211 Low Noise, RRO Op-Amp with CMOS Input and 24V Operation

June 2006

General Description

The LM6211 is a wide bandwidth, low noise op amp with a
wide supply voltage range and a low input bias current. The
LM6211 operates with a single supply voltage of 5V to 24V,
is unity gain stable, has a ground-sensing CMOS input
stage, and offers rail-to-rail output swing.

The LM6211 is designed to provide optimal performance in
high voltage, low noise systems. The LM6211 has a unity
gain bandwidth of 20 MHz and an input referred voltage
noise density of 5.5 nV/
achieves these specifications with a low supply current of
only 1 mA. The LM6211 has a low input bias current of

2.3 pA, an output short circuit current of 25 mA and a slew
rate of 5.6 V/us. The LM6211 also features a low common­mode input capacitance of 5.5 pF which makes it ideal for
use in wide bandwidth and high gain circuits. The LM6211 is
well suited for low noise applications that require an op amp
with very low input bias currents and a large output voltage
swing, like active loop-filters for wide-band PLLs. A low total
harmonic distortion, 0.01% at 1 kHz with loads as high as
600Ω, also makes the LM6211 ideal for high fidelity audio
and microphone amplifiers.

The LM6211 is available in the small SOT package, allowing
the user to implement ultra-small and cost effective board
layouts.

at 10 kHz. The LM6211

Typical Application

Features

(Typical 24V supply unless otherwise noted)

n Supply voltage range 5V to 24V
n Input referred voltage noise 5.5 nV/
n Unity gain bandwidth 20 MHz
n 1/f corner frequency 400 Hz
n Slew rate 5.6 V/µs
n Supply current 1.05 mA
n Low input capacitance 5.5 pF
n Temperature range -40˚C to 125˚C
n Total harmonic distortion 0.01%
n Output short circuit current 25 mA

@

1 kHz, 600Ω

Applications

n PLL loop filters
n Low noise active filters
n Strain gauge amplifiers
n Low noise microphone amplifiers

20120303

20120304

© 2006 National Semiconductor Corporation DS201203 www.national.com

Absolute Maximum Ratings (Note 1)

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If Military/Aerospace specified devices are required,

LM6211

please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

Junction Temperature (Note 3) +150˚C

Soldering Information

Infrared or Convection (20 sec) 235˚C

Wave Soldering Lead Temp. (10 sec) 260˚C

ESD Tolerance (Note 2)

Human Body Model 2000V

Operating Ratings (Note 1)

Machine Model 200V

Differential

V

IN

Supply Voltage (V

=V+–V−) 25V

S

Voltage at Input/Output pins V

+

+0.3V, V−−0.3V

±

0.3V

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

Temperature Range −40˚C to +125˚C

Supply Voltage (V

Package Thermal Resistance (θ

=V+–V−) 5Vto24V

S

(Note 3))

JA

5-Pin SOT23 178˚C/W

5V Electrical Characteristics (Note 4)

Unless otherwise specified, all limits are guaranteed for TA= 25˚C, V+= 5V, V−= 0V, VCM=VO=V+/2. Boldface limits apply
at the temperature extremes.

Symbol Parameter Conditions Min

(Note 6)

V

OS

TC V

I

B

I

OS

CMRR Common Mode Rejection

PSRR Power Supply Rejection Ratio V

Input Offset Voltage VCM= 0.5V 0.1

Input Offset Average Drift VCM= 0.5V (Note 7) 2 µV/C

OS

Input Bias Current VCM= 0.5V (Notes 8, 9) 0.5 5

Input Offset Current VCM= 0.5V 0.1 pA

Ratio

0V≤ V

0.4 V ≤ V

+

≤ 3V

CM

≤ 2.3 V

CM

= 5V to 24V, VCM= 0.5V 85

83

70

78

+

= 4.5V to 25V, VCM= 0.5V 80 95

V

CMVR Input Common-Mode Voltage

Range

A

VOL

Large Signal Voltage Gain VO= 0.35V to 4.65, RL=2kΩ to V+/2 82

CMRR ≥ 65 dB

CMRR ≥ 60 dB

0

0

80

= 0.25V to 4.75, RL=10kΩ to V+/2 85

V

O

82

V

O

Output Swing High RL=2kΩ to V+/2 50 150

=10kΩ to V+/2 20 85

R

L

Output Swing Low R

=2kΩ to V+/2 39 150

L

RL=10kΩ to V+/2 13 85

I

I

OUT

S

Output Short Circuit Current Sourcing to V+/2

Supply Current 0.96 1.10

SR Slew Rate A

= 100 mV (Note 10)

V

ID

Sinking to V

= −100 mV (Note 10)

V

ID

= +1, 10% to 90% (Note 11) 5.5 V/µs

V

+

/2

13

10

20

10

GBW Gain Bandwidth Product 17 MHz

e

n

Input-Referred Voltage Noise f = 10 kHz 5.5

f = 1 kHz 6.0

i

n

Input-Referred Current Noise f = 1 kHz 0.01 pA/

Typ

(Note 5)

98

98

110

110

16

30

Max

(Note 6)

±

±

165

170

1.25

2.5

2.8

10

3.3

2.4

90

90

Units

mV

pA

nA

dB

dB

V

dB

mV from

rail

mA

mA

nV/

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5V Electrical Characteristics (Note 4) (Continued)

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Unless otherwise specified, all limits are guaranteed for TA= 25˚C, V+= 5V, V−= 0V, VCM=VO=V+/2. Boldface limits apply
at the temperature extremes.

Symbol Parameter Conditions Min

(Note 6)

THD Total Harmonic Distortion A

=2,RL= 600Ω to V+/2 0.01 %

V

Typ

(Note 5)

Max

(Note 6)

Units

24V Electrical Characteristics (Note 4)

Unless otherwise specified, all limits are guaranteed for TA= 25˚C, V+= 24V, V−= 0V, VCM=VO=V+/2. Boldface limits apply
at the temperature extremes.

Symbol Parameter Conditions Min

(Note 6)

V

OS

TC V

I

B

I

OS

CMRR Common Mode Rejection

PSRR Power Supply Rejection Ratio V

Input Offset Voltage VCM= 0.5V 0.25

Input Offset Average Drift VCM= 0.5V (Note 7)

OS

Input Bias Current VCM= 0.5V (Notes 8, 9) 2 25

Input Offset Current VCM= 0.5V 0.1 pA

85

70

Ratio

0 ≤ V

0.4 ≤ V

≤ 21V

CM

≤ 20V

CM

+

= 5V to 24V, VCM= 0.5V 85

78

V+= 4.5V to 25V, VCM= 0.5V 80 98

CMVR Input Common-Mode Voltage

Range

A

VOL

Large Signal Voltage Gain VO= 1.5V to 22.5V, RL=2kΩ to V+/2 82

CMRR ≥ 65 dB

CMRR ≥ 60 dB

0

0

77

VO= 1V to 23V, RL=10kΩ to V+/2 85

82

V

O

Output Swing High RL=2kΩ to V+/2 212 400

RL=10kΩ to V+/2 48 150

Output Swing Low R

=2kΩ to V+/2 150 350

L

RL=10kΩ to V+/2 38 150

I

I

OUT

S

Output Short Circuit Current Sourcing to V+/2

= 100 mV (Note 10)

V

ID

Sinking to V

= −100 mV (Note 10)

V

ID

+

/2

Supply Current 1.05 1.25

SR Slew Rate AV= +1, VO=18V

PP

20

15

30

20

10% to 90% (Note 11)

GBW Gain Bandwidth Product 20 MHz

e

n

Input-Referred Voltage Noise f = 10 kHz 5.5

f = 1 kHz 6.0

i

n

Input-Referred Current Noise f = 1 kHz 0.01 pA/

THD Total Harmonic Distortion AV=2,RL=2kΩ to V+/2 0.01 %

Typ

(Note 5)

±

2 µV/C

Max

(Note 6)

±

2.7

±

3.0

10

105

98

21.5

20.5

120

120

520

165

420

170

25

38

1.40

5.6 V/µs

Units

mV

pA

nA

dB

dB

V

dB

mV from

rail

mA

mA

nV/

LM6211

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

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intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics Tables.

Note 2: Human Body Model is 1.5 kΩ in series with 100 pF. Machine Model is 0Ω in series with 200 pF.

LM6211

Note 3: The maximum power dissipation is a function of T

P

=(T

D

J(MAX)-TA

Note 4: 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.

Note 5: Typical values represent the most likely parametric norm at the time of characterization.

Note 6: Limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlations using the Statistical Quality

Control (SQC) method.

Note 7: Offset voltage average drift is determined by dividing the change in V

Note 8: Positive current corresponds to current flowing into the device.

Note 9: Input bias current is guaranteed by design.

Note 10: The device is short circuit protected and can source or sink its limit currents continuously. However, care should be taken such that when the output is

driving short circuit currents, the inputs do not see more than

Note 11: Slew rate is the average of the rising and falling slew rates.

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

Connection Diagram

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

J(MAX)

at the temperature extremes into the total temperature change.

OS

±

0.3V differential voltage.

5-Pin SOT23

Top View

20120301

Ordering Information

Package Part Number Package Marking Transport Media NSC Drawing

5-Pin SOT-23

LM6211MF

LM6211MFX 3k Units Tape and Reel

AT1A

1k Units Tape and Reel

MF05A

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LM6211

Typical Performance Characteristics Unless otherwise specified, T

−

=0V,VCM=VS/2.

V

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Supply Current vs. Supply Voltage V

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VOSvs. V

CM

vs. Supply Voltage

OS

VOSvs. V

= 25˚C, VS= 24V, V+=VS,

A

20120319

CM

Input Bias Current vs. V

CM

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20120350

Input Bias Current vs. V

20120321

CM

20120351

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Typical Performance Characteristics Unless otherwise specified, T

−

=0V,VCM=VS/2. (Continued)

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V

LM6211

= 25˚C, VS= 24V, V+=VS,

A

Input Bias Current vs. V

CM

20120353

Input Bias Current vs. V

CM

Sourcing Current vs. Supply Voltage Sinking Current vs. Supply Voltage

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20120334

Positive Output Swing vs. Supply Voltage Negative Output Swing vs. Supply Voltage

20120330

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